 Dental coating and dental system
专利摘要:
SYSTEM OF DEVICES, DENTAL INSTRUMENT, DENTAL COATING, METHOD TO PRODUCE A DENTAL COATING, AND, DENTAL SYSTEM. The present invention is directed to a system of devices and a method for preparing a tooth for receiving a restoration. The system includes a dental instrument for removing portions of a tooth in a patient's mouth and a coating to guide the dental instrument during the tooth removal step. The coating is designed for temporary installation in the patient's mouth to guide the dental instrument to remove tooth material. The coating has one or more sets of guide walls with a predetermined configuration, capable of contacting one or more guide projections of the dental instrument and a receptacle capable of receiving and attaching to the dental instrument. 公开号:BR112013030235B1 申请号:R112013030235-6 申请日:2012-05-25 公开日:2021-02-02 发明作者:Cyrus Tahmasebi；Charles Stapleton 申请人:Viax Dental Technologies, LLC； IPC主号:
专利说明:
[001] This Order claims the benefit of the filing date of US Provisional Order number 61 / 490,361, filed on May 26, 2011, entitled “Dental Tool and Guiding Devices”, the disclosure of which is hereby incorporated by reference. TECHNOLOGY FIELD [002] The present invention relates to devices and methods for preparing teeth for dental restorations and, in particular, it relates to systems, devices and methods for teeth for receiving previously produced tooth restorations. BACKGROUND OF THE INVENTION [003] Complete intact teeth, which are desirable in cosmetic form, which wear out equally and provide a balanced bite, are the goals of patients. Over time, however, problems arise in teeth due to accidents, deterioration from wear and tear, decay, tooth movement, etc. As a result, teeth can become accidentally chipped or cracked from a variety of causes that include normal wear and tear and weakened from decay due to hygiene and oral care practices, and / or the consumption of certain foods such as sweets , tobacco use, illness, medications, certain congenital conditions and environmental effects. To this end, dental professionals and their patients have relied on several methods to repair these tooth deformities and weaknesses. [004] The repair of teeth often requires preparation and modification of the external shape and dimension of a tooth, to be able to receive various prostheses or restorations, such as crowns, blocks, supports, bridges and coverings. Also, to prepare the prosthesis or appropriate restoration, any three-dimensional scanning impressions must be conducted from the original shape of the unmodified tooth and the modified tooth. Dental professionals often place a temporary prosthesis on the modified or prepared tooth while a permanent prosthesis is manufactured, however the use of such a temporary device and the removal of any cement used to place the temporary device on the prepared tooth can create a discrepancy between the prepared tooth and the internal configuration of the prosthesis. [005] There was a need in the art to develop a system to test patients' teeth more efficiently and reliably to receive restorations and other prostheses. BRIEF SUMMARY OF THE INVENTION [006] In accordance with the present invention, a system and products have been discovered, which provide a simpler, more reliable and more convenient technique for treating a tooth that needs a restoration piece in view of decay, cracks or other diseases that exist in the tooth. A system of dental devices is provided that can be used to modify a tooth, limiting the removal of material from the tooth to produce a shape or configuration that matches or corresponds to the interior configuration of a restoration piece. This system makes it possible to prepare a restoration piece in advance of tooth preparation. The tooth can also be precisely prepared with the configuration that corresponds to and matches the internal configuration of the restoration part. Following this technique, the restoration piece is available to be installed immediately after tooth preparation. Therefore, in a single visit to the office, it is possible for the dentist to prepare the tooth and mount the restoration piece on the prepared tooth. [007] Under both these conventional methods and the present invention there is first a diagnosis that indicates the need to treat a tooth with a restoration piece. This is usually based on initial X-rays or other diagnostic techniques that identify the location and extent of decay, cracks and other tooth diseases. A mold, cast, impression, or three-dimensional data must be created based on the original tooth to be treated. At this point the present invention deviates from conventional techniques in practice. Conventional techniques require the tooth to be overhauled and reshaped to remove decay, cracks and other diseases to leave a tooth ready to receive a restoration piece. After tooth material has been removed, the revised configuration of the prepared tooth must be defined from a second mold or cast or three-dimensional data. The revised prepared tooth is usually fitted and fitted with a temporary crown to protect the prepared tooth, and provide some comfort to the patient until the restoration piece is manufactured, which can take days and even weeks. Both sets of castings / molds or dies are used, usually in an off-site laboratory, to prepare the restoration. The configuration of the original tooth is the basis for preparing the exterior of the restoration part, while the configuration of the revised prepared tooth is the reverse or negative for configuration of the interior of the restoration part. [008] The procedure of the present invention reduces inconveniences for patients, such as eliminating some visits to the office and eliminating the need for wearing a temporary crown. Therefore, under the present invention there is no need to prepare the tooth before producing the restoration part. There is also no need to produce a cast, mold, or three-dimensional data for the prepared tooth, before installing the restoration part. There is no need for a temporary crown to be installed on the prepared tooth, nor the removal of the temporary crown and associated cement, which can create complications with the adjustment of the restoration piece. Such complications may require another revision of the tooth to adjust the restoration, or another modification of the restoration piece. Also discomfort for the patient when using a temporary device is eliminated, and the increased risk of infection while the prepared tooth is exposed or is under the temporary crown. [009] According to the present invention, a dental coating as defined in claim 1 and a dental system as defined in claim 11 have been discovered for use in treating a tooth to remove certain predetermined portions of the tooth structure. [0010] In one example, a system of devices has been discovered for use in treating a tooth, to remove certain predetermined portions of the tooth structure. The system comprises: (i) a dental instrument for removing portions of a tooth in a patient's mouth, said dental instrument adapted to be used with a coating that is installed on or next to the tooth to be treated; and (ii) a coating for temporary installation in a patient's mouth, to guide a dental instrument in removing tooth structure from the treated tooth, said coating including a cutting guide used with an appropriate dental instrument to limit movement of the dental instrument. during operation to restrict removal of the tooth structure to the predetermined portion of the tooth, said cutting guide comprising one or more of the following: (a) one or more sets of guide walls, in which the adjacent guide walls in each set and their surfaces have a predetermined configuration capable of contacting one or more guide projections of a dental instrument to limit the movement of the dental instrument and restrict removal of tooth structure to the predetermined portion of the tooth; and (b) a receptacle hingedly or slidably connected to the coating, and capable of receiving and attaching to the dental instrument, in which the dental instrument, when attached to the receptacle, has limited movement in relation to the tooth to be treated, and restricts removal of the tooth structure to the predetermined portion of the treated tooth. [0011] With respect to the dental instrument, it comprises: a tooth treatment set to remove a portion of the tooth structure, and one or more guide projections that extend from the instrument towards the tooth being prepared to be treated when the instrument is in position to remove the tooth structure, said one or more guide projections being able to contact a cutting guide in a coating device installed in the vicinity of the tooth to be treated to limit the three-dimensional movement of the tooth treatment instrument in relation to the tooth in preparation. [0012] The dental coating may include the cutting guide as described above, or it may include other modalities of cutting guide in which a receptacle is used to secure the dental instrument to the coating, where the receptacle is hingedly or securely attached. sliding to the coating. When the dental instrument is attached to such a liner receptacle, since the movement of the receptacle is especially limited, the movement of the dental instrument is also limited, which restricts its ability to remove tooth structure from the treated tooth to the predetermined portion of the treated tooth. [0013] In one example, a method is provided to treat an elaborating tooth in a patient's mouth, removing portions of its structure, said method comprising the steps of: determining the three-dimensional structure of the elaborating tooth to be removed for treatment; provide the dental instrument comprising a tooth cutting element for removing a portion of a tooth structure, and one or more guide projections extending from the instrument towards the tooth to be treated, when said dental treatment element tooth is in an operating position to remove the tooth structure; preparing a dental coating that has a cutting guide with a configuration that is capable of contacting one or more guide projections of the dental instrument, to limit the movement of the dental instrument to restrict the structure removed from the tooth under treatment to predetermined three-dimensional portions of tooth structure. tooth for treatment. [0014] These and other embodiments and other details of the invention are described elsewhere in the specification. BRIEF DESCRIPTION OF THE DRAWINGS [0015] The invention will now be described in more detail with respect to non-limiting drawings that illustrate some preferred embodiments of the invention. In the drawings: [0016] FIG. 1a and 1B are perspective views showing a dental instrument placed on a liner for use by a dentist in removing tooth structure according to the present invention. [0017] FIG. 2 is a perspective view showing a hand clamp on a tooth treatment set of the dental instrument of FIG. 1. [0018] FIGS. 3A and 3B are perspective views of two configurations of the tooth treatment set and a projection head of the dental instrument shown in FIG. 1. [0019] FIGS. 4A and 4B are a plan view of two configurations of the projection head and the tooth treatment set shown in FIGS. 2 and 3. [0020] FIG. 5 is a perspective view of a dental coating placed on the patient's teeth for use by a dentist in removing tooth structure according to the present invention. [0021] FIG. 6 is a plan view of the dental lining shown in FIG. 5. [0022] FIG. 7 is a bottom view of the dental lining shown in FIG. 5. [0023] FIG. 8 is a perspective view of an alternative arrangement of a coating placed on a patient's teeth for use by a dentist in removing tooth structure according to the present invention. [0024] FIG. 9 is a perspective view of another alternative arrangement of a coating placed on a patient's teeth for use by a dentist in removing the tooth structure according to the present invention. [0025] FIG. 10 is a perspective view of yet another alternative arrangement of a coating placed on a patient's teeth for use by a dentist in removing the tooth structure according to the present invention. [0026] FIG. 11 is a perspective view of a coating device for use by a dentist in removing the tooth structure according to the present invention. [0027] FIG. 12 is a plan view of the coating device shown in FIG. 11 placed on a patient's teeth for use by a dentist to remove tooth structure. [0028] FIG. 13 is a bottom view of the coating device shown in FIG. 11. [0029] FIG. 14 is a perspective view of a coating device placed on a patient's teeth for use by a dentist in removing the tooth structure according to the present invention. [0030] FIG. 15 is a perspective view of a tooth prior to any preparation of the tooth. [0031] FIG. 16 is a perspective view of the tooth shown in FIG. 15 after preparing the tooth using a dental instrument of FIG. 1 in combination with the dental coating of FIG. 5 according to the present invention. [0032] Within the drawings the same, or similar reference numeral, is used to correspond to the same or an analogous element. DETAILED DESCRIPTION [0033] In the brief summary of the invention above, and in the detailed description of the invention, here and in the claims below, and in the accompanying drawings, reference is made to particular aspects (for example, method steps) of the invention. It is understood that the invention encompasses and includes all possible combinations of the aspects described in the text in addition to those outlined in the drawings. For example, where a particular aspect is disclosed in the context of a particular aspect, arrangement or modality of the invention, a particular claim whose aspect can also be used to the extent possible in combination with and / or in the context of other particular aspects, arrangements and modalities of the invention, and the invention in a generic way. [0034] The term "comprises" and its grammatical equivalents are used here to mean that other components for the ingredients, steps, etc., are optionally present. For example, an article "comprising" (or "comprising") components A. B and C may consist of (that is, contain only) components A, B and C, or it may consist not only of components A, B and C , but also one or more other components. [0035] Where reference is made here to a method comprising two or more defined steps, the defined steps may be carried out in any order or simultaneously, except where the context excludes this possibility, and the method may include one or more other steps that they are performed before any of the defined steps, between two of the defined steps, or after all the defined steps, except where the context excludes this possibility. The term "step from" does not mean "step to". [0036] The terms "lower", "upper", etc., and derived directional terms, such as "horizontal" and "vertical", "up" and "down" are based on a normal coating configuration such as shown in the drawings, where the lining fits over a patient's lower teeth with its roots extending vertically downward. The term “dentist” in this text is not interpreted in a restrictive way and can also be read as a professional dentist, dental technician, dental assistant, dental assistant, dental therapist, dental designer, etc. [0037] The present invention provides a system for use by a dental professional in order to accurately prepare, revise, or modify a tooth in preparation to receive a preformed restoration such as a block, bracket, crown, bridge or cladding. Such a system has two main components: (i) a dental instrument that has aspects capable of contacting a suitable guiding configuration of a coating or coating device and (ii) a coating or coating device that can be attached to a tooth in preparation and / or neighboring teeth and configured to limit the three-dimensional movement of a dental instrument, thereby limiting the movement of the dental instrument itself in relation to the tooth being treated. A method of using the system is also provided. [0038] According to conventional techniques a diagnostic evaluation of a tooth reveals an existing condition that requires the tooth to be treated by installing a restoration or prosthesis. Under these conventional approaches, the tooth to be treated is reviewed and prepared first, and then its revised configuration is used to manufacture the internal configuration of the restoration. Therefore, the restoration is manufactured to fit the prepared tooth. [0039] According to the invention, the system comprising the coating with the cutting guide and the dental instrument with coordinates with the coating, allows the tooth to be prepared after the restoration is made, when the prepared tooth conforms to the configuration of the existing restoration. [0040] The dentist can prepare a cast or mold of the existing tooth in preparation in the context of neighboring teeth and can identify by X-rays and / or other diagnostic techniques, the portions of the tooth in preparation that should be removed due, for example , decay, cracks, weaknesses, deterioration, impediment to bite, etc. Based on this information, the invention provides to produce a restoration piece in advance of the physical revision of the tooth, so that this restoration piece is available to the dentist even before he or she begins to prepare the tooth physically. The tooth can then be precisely prepared using the coating configured to overhaul the tooth in a way to match or match the interior of the restoration. The availability of the restoration makes it possible to mount it directly on the tooth at the same visit as the tooth is prepared. This substantially reduces the patient's inconvenience, and reduces the number of visits to the dentist. This also reduces the possibility of a prepared tooth becoming contaminated during the long period of time between preparing the tooth and installing the final restoration. [0041] Referring now to the drawings, FIG. 1 shows a preferred embodiment of a dental instrument 10 adapted to fit and coordinate with a coating device for use in removing portions of the tooth structure in a predetermined configuration for preparing a tooth in preparation to accommodate a preformed restoration. In this embodiment, the dental instrument 10 has a hand clamp 30 attached to a tooth treatment set 50 that includes, for example, a dental drill that is installed inside and encapsulated by a projection head 70. As shown in FIG. 1, the tooth treatment set and the projection head can be integrated with each other to form a monolithic structure described here further. [0042] As illustrated in FIG. 2, the hand clamp 30 provides a portion of the instrument 10 to rest in a human hand and has an axis that can optionally be hollow along its longitudinal centerline. One end of the hand clamp 30 is attached to one side of a connecting end 31 which is attached on its other side to the tooth treatment set 50. The tooth treatment set 50 of FIG. 2 is used when the tooth treatment set 50 does not form an integrated monolithic structure with the projection head 20. The tooth treatment set 50 includes a tooth treatment element 52 and appropriate pneumatic and / or mechanical drives, well known in the art, which run through the hand clamp 30 and may include a housing 40. However, housing 40 forms part of the projection head 20 in the arrangement in which the tooth treatment set 50 and projection head 20 are integrated. In this preferred embodiment, the mechanical drives cause a rotation of a tooth treatment element 52 used to remove tooth structure. It is important to note that the tooth treatment element 52 does not need to be rotated to perform its designed function of removing tooth structure from a tooth in the making 60, an example of which is shown in FIG. 15. For example, it can cut through a tooth in the process of sawing or milling. The instrument can also be adapted for a tooth treatment element that removes tooth material by laser, or other techniques. [0043] As shown in FIGS. 2-4, the projection head 20 surrounding the tooth treatment set 50 preferably has a bottom base 23 from which a side wall 27 extends upward and around its periphery, leaving an opening 29 in a far end. The opening 29 is large enough to accommodate the thickness of the connecting end 31 of the hand clamp 30. In the two-piece arrangement of the tooth treatment set 50 and the projection head 20, an inner face 28 of the side wall 27 of the head of projection 20 preferably wraps around the periphery of the bottom base 23, such that a portion of the side wall 27 approximately conforms to the shape of the housing 40 of the tooth treatment set 50. In any arrangement, a tool opening 24 extends through the thickness of the bottom base 23 and has a shape and dimension to enable it to accommodate the tooth treatment set 50 and allow water jets or drafts from the tooth treatment set 50 to pass through up to the tooth being worked out 60. In the preferred embodiment, guide projections 21 extend downwardly from a projection flange 26 which often protrudes in a horizontal direction away from the bottom base 23 , as shown in FIGS. 1 and 3 from the bottom base 23. Alternatively, one or more of these projections 21 could also extend from the bottom base itself 23. In another alternative arrangement, the projection flange 26 could protrude from a combination of the bottom base 23, as well as the side wall 27. [0044] The guide projections 21 are capable of contacting physical limits such as those defined by the guide surfaces of a suitable guide configuration of a predetermined coating device. In this way, the appropriate guide configuration can limit the lateral movement of the tooth treatment set 50 and corresponding tooth treatment element 52 in relation to the tooth being prepared. [0045] The guide configuration provides a corresponding limitation on the movement of the entire dental instrument 10 through the user, and thus can remove predetermined portions of the tooth structure such that when the movement of the dental instrument 10 through the entire guide configuration is complete, the resulting prepared tooth 70, an example of which is shown in FIG. 13, will have dimensions that allow it to be adjusted and matched to the interior of a pre-formed restoration. [0046] In one embodiment, the projection head 20 is able to rest on a suitable guide configuration. Within this configuration the bottom base 23 of the projection head 20 preferably can have a flat bottom surface 25 as shown in FIG. 3, or a curved surface (not shown), however other arrangements of this surface are within the scope of the present invention. The guide projections 21 extending from the projection head 20 in this configuration preferably have a predetermined length to correspond to the guide configuration of the coating device. In this way, the guide projections 21 will preferably have a length such that each of their end ends, or ends 22, do not contact a surface of the suitable guide configuration when the projection head 20 rests on a suitable guide configuration. Since the projection head 20 rests on the appropriate guide configuration in this arrangement, the guide configuration limits the movement of the projection head 20 in the direction of the guide configuration and thus controls the depth of the projection head 20 and thus the treatment set of tooth 50 and, finally, the depth of penetration of the tooth treatment element 52 into a tooth in process 60. [0047] Alternatively, the guide projections 21 can have a predetermined length, such that each of its ends 22 does not contact a surface of the appropriate guide configuration. In this way, the guide configuration limits the movement of the guide projections 21 in the direction of the guide configuration and, consequently, controls the depth of the projection head 20 and finally the depth of penetration of the tooth treatment element 52 into the interior of a tooth in preparation . In such an arrangement the projection head 20 can, however, not need to rest on the guide configuration. [0048] In some cases, a suitable guide configuration used in conjunction with the preferred modality of the dental instrument 10 may have several spacing between its elements. The projection head 20 can be selected with a dimension and shape that allows it to be adjusted within only pre-selected spacings or certain of these spacings. For example, a set of adjacent guide surfaces that extend from the base of a suitable guide configuration can be staggered, or a series of spacing between guide surfaces, so that only some of the adjacent guide surfaces will be sufficiently spaced to make it possible to adjust the head. 20 of the dental instrument. [0049] In another embodiment of the invention, a coating can be adapted to receive or accommodate a dental instrument such as the dental instrument 10 described hereinbefore. FIGS. 5-12 show preferred configurations of such a coating. In the preferred configurations shown in FIGS. 5-7 a coating 90 has a predetermined base 80. This base 80 has an open area 81 that extends through the thickness of the base 80 and exposes surfaces of the tooth in process 60 or adjacent teeth 65 at least larger than portions of the structure of tooth to be removed. In addition, as illustrated in FIG. 7, the base 80 has tooth contact surfaces 82 that are profiled to provide contact regions capable of contacting one or more teeth to secure the coating 90 in a position suitable for the predetermined coating configuration to be used in removing the predetermined portions of the tooth structure of tooth 60 being treated. In this regard, tooth contact surfaces 82 may have a shape that substantially corresponds to the outer shape of portions of the drafting tooth and / or teeth adjacent to the drafting tooth. [0050] In this arrangement, a first guide wall 86 and a second guide wall 87, which form a first set of guide walls, extend vertically from one side of the base 80. As shown in FIGS. 5 and 6, third and fourth guide walls 88, 89 forming a second set of guide walls extend in a similar manner, vertically from an opposite side of the base 80. Although not shown in FIGS., A coating may have additional sets of guide walls. Each set of guide walls in the preferred embodiment shown in FIGS. 5 and 6 have first and second guide surfaces 83, 84 on guide walls 86, 87, respectively. However, a set of guide walls can have more or less than two guide walls. [0051] In the preferred embodiment shown in FIGS. 5 and 6, the first and second guide walls 86, 87 are positioned distally along the base 80 while the third and fourth guide walls 88, 89 are positioned medially along the base 80. However, a set of walls guide can be positioned on the buccal or facial and / or lingual or palatal sides of a comparable base 180, as illustrated in FIG. 8. In the preferred embodiment, the first and second guide surfaces 83, 84 of the respective guide walls 86, 87 are able to contact one or more guide projections of a dental instrument to limit the movement of a dental treatment element of a dental instrument such as the tooth treatment element 52 of the dental instrument 10. Preferably, guide surfaces 83, 84 are spaced apart by a distance sufficient to receive such a tooth treatment element. [0052] In the preferred embodiment shown in FIGS. 5 and 6, the guide walls 86, 87 have a substantially uniform thickness in a direction perpendicular to the base 80 which leads to a substantially flat surface through the top surface 85 of each of the guide walls 86, 87. In addition, guide walls 86, 87 have a substantially equivalent predetermined height above the base 80, which when coupled with the substantially flat top surface 85 allows a portion of a dental instrument, such as the projection head 20 of the dental instrument 10 to deposit through the thickness of adjacent guide walls, often depositing flat as in the arrangement shown in FIG. 1. In this way, the predetermined height of the guide walls 86, 87 can limit the movement of a tooth treatment element such as the tooth treatment element 52 of the dental instrument 10 in the direction that is often the apical direction of the tooth. In an alternative arrangement, the top surface of a set of guide walls may be beveled, chamfered, rounded, dented, or have an alternative shape to allow a coating to receive a dental instrument surface at a variety of angles. [0053] Preferably during the tooth preparation procedure, the coating 90 should remain fixed and not move once it is placed around the tooth being made 60. In addition, the coating 90 should remain in a stable position, even when a dental instrument designed for use with the coating 90, such as the dental instrument 10, makes contact with it. The position of the coating 90 can be ensured by contacting the contact surfaces 82 of the coating 90 with tooth surfaces, or by using a bonding agent such as one that is cured by light, or a temporary cement, or by means of projections from the lining 90 that engage portions of a tooth, including an elaborate tooth 60, any of the adjacent teeth 65 or teething in the opposite jaw. [0054] As in the preferred embodiments shown in FIGS. 5 and 6, the guide walls can be curved. In this arrangement, each guide wall within a set of guide walls is substantially curved around the same center line. [0055] In alternative arrangements of the preferred embodiments, the first and second guide walls of a given set of guide walls can be substantially parallel to each other in a direction parallel to a plane through the longitudinal center lines, through the guide walls. For example, in FIGS. 8 and 9, first and second guide walls 186, 187, 286 and 287 are provided, configured in a manner to limit the movement of a dental treatment element of a dental instrument in directions substantially parallel to and substantially perpendicular to the proximal surfaces of each tooth. under development, respectively. In another alternative arrangement, each guide wall within a given set of guide walls is not parallel to each other guide wall. In such an arrangement, the spaces between the guide walls of a given set of guide walls can be arranged in a circular pattern, as shown in FIG. 10. Although not shown in the figures, the guide walls can also be in rectangular, triangular, or numerous other configurations. [0056] Figures 11-13 illustrate another preferred embodiment for a dental instrument for use in removing a portion of the structure of an elaborate tooth 60, in preparation for a subsequent restoration. The device shown includes a hand clamp attached to a treatment set from within, often through a connecting end. The tooth treatment set preferably includes a housing, a tooth treatment element and appropriate pneumatic and / or mechanical drives, as in the tooth treatment set 50. [0057] The housing of the tooth treatment set is adapted to connect to, and preferably to fit within, a receptacle portion of a coating device such as a receptacle 270 of a coating 290 described further here, and is further able to interlock with the receptacle. In an alternative arrangement, the tooth treatment set housing may have certain aspects for increased stability of the dental instrument. Such aspects may include interlocking grooves, a non-circular or asymmetric cross section, or interlocking grooves on the outside, capable of interfacing with a coating device. [0058] With reference to FIG. 11, the tooth treatment set of the dental instrument can be attached to a receptacle element of the coating such that it is capable of moving together with the receptacle. In such an arrangement, the tooth treatment set can be integrally connected to a receptacle, such as receptacle 270, such that it is able to pivot around a joint, such as a joint 242, which connects the receptacle to a coating device such as coating 290. [0059] Again referring to FIG. 11, when the tooth treatment set is attached to a receptacle element connected to a coating device, the tooth treatment element can protrude through the receptacle element and can extend into an open area of the coating device, such as such as open area 281, such that it is able to contact physical limits of a suitable guiding configuration, such as those defined by a guiding surface of a predetermined coating device, to provide the tooth treatment element with sufficient access for a three-dimensional portion of the tooth to be removed. In this way, the appropriate guide configuration can act in coordination with the receptacle element to limit the lateral movement of the tooth treatment set and corresponding tooth treatment element in relation to the tooth 60 being prepared. [0060] The guide configuration and the receptacle element thus provide a corresponding limitation on the movement of the entire dental instrument by the user, and thus the instrument 200 can remove predetermined portions of tooth structure, such that when movement of the instrument through the entire area through which the receptacle element allows movement within the guide projection, the resulting prepared tooth 70 an example of which is shown in FIG. 16, will have dimensions that allow it to be adjusted to, and corresponded to, the interior of a preformed restoration. [0061] In the arrangement shown in FIG. 11, in which the tooth treatment set is installed inside a receptacle element attached to a coating such as receptacle 270, the coating can restrict the vertical movement of the receptacle element to limit the movement of the treatment assembly from within the direction of guiding configuration, and thus finally controlling the depth of penetration of the tooth treatment element into the tooth under elaboration 60. [0062] In another embodiment according to the invention, a coating can be adapted to receive or accommodate a dental instrument, such as the dental instrument described here previously. The coating 290 has a predetermined base 280 that has an open area 281 that extends through the thickness of the base 280 and exposes surfaces of the tooth being worked on 60 or adjacent teeth 65, at least larger than the portions of the tooth structure to be removed , as well as a receptacle 270 attached to the base 280. In addition, as illustrated in FIG. 13, the base 280 has tooth contact surfaces 282 that are profiled to provide contact regions capable of contacting one or more teeth, to ensure securing the coating 290 in a position suitable for the predetermined coating configuration to be used in removing the predetermined portions of tooth structure starting from tooth 60 being treated. In this regard, the tooth contact surfaces 282 may have a shape that substantially corresponds to the outer shape of the portions of the tooth being worked on and / or teeth adjacent to the tooth being worked on. [0063] As shown in FIGS. 11 and 12, the receptacle 270 is an aspect which is adapted to receive and can at the same time surround a portion of a tooth treatment set carcass, such as the tooth treatment set carcass, when the carcass is installed inside receptacle 270. Receptacle 270 preferably has a bottom base 223 from which a side wall 227 extends upward and around its periphery, leaving an opening 229 at one end. Opening 229 is large enough to accommodate the thickness of the connecting end 231 of the hand clamp. A combination of bottom base 223 and side wall 227 forms inner and outer surfaces 273, 274 of the receptacle. The inner surface 273 of receptacle 270 preferably conforms to the shape of a tooth treatment assembly housing such as the tooth treatment housing. The receptacle 270 may also have a head locking aspect, which is capable of engaging a cutout located on a tooth treatment set housing such as tooth treatment set housing 240, and an axis locking appearance which is capable of engaging a cutout located at a connecting end of a tooth treatment set such as the connecting end of the tooth treatment set. The outer surface 274 of receptacle 270 preferably includes a flange 275 extending therefrom. In a preferred arrangement in which the receptacle 270 is circular to conform to a treatment set of the same circular manner, the flange 275 preferably extends circumferentially around the outer surface 274 of the receptacle 270, as in the arrangement shown in FIGS. 11 and 12. A tool opening 224 extends through the thickness of the bottom base 223 of the receptacle 270 to enable a tooth treatment element such as a tooth treatment element, as well as water jets or drafts, pass through. [0064] Again referring to FIG. 11, receptacle 270 can be movably attached to a base surface 284 of liner 290. In this way, receptacle 270 can be pivotally attached to liner 290 via hinge 242 as shown in FIG. 11. In this way, receptacle 270 is able to rotate around the longitudinal centerline of the joint. Although hinge 242 is shown as a pin in FIG. 11, any type of rotational connection between the liner and the receptacle, such as securing the receptacle to a roller bearing on the liner, is within the scope of this invention. [0065] As FIG. 11 further illustrates, when the dental instrument such as the dental appliance is attached to the coating 290, a tooth treatment element of the instrument's tooth treatment assembly may protrude through the tool opening 224 and may extend into the interior of the instrument. an open area 281 of the liner 290, such that it is able to contact physical limits of a suitable guiding configuration defined by an encounter surface of the liner 290. The receptacle 270 may also include at least one guide projection (not shown) that extends towards the meeting surface. In this way, the base 280 is able to coordinate with the joint 242 and the meeting surface is able to contact any or both of the tooth treatment elements such as the tooth treatment element 252, or the guide projection, to confine the movement of the receptacle 270 and thus the tooth treatment set 250 to a predetermined three-dimensional region of the tooth being worked out 60. [0066] In an alternative arrangement, a receiving wall 260 is attached to the base surface 284 of the cladding 290. The receiving wall 260 has a rim 260 along its length. In a preferred arrangement, the receiving wall 260 may have notches 261, but alternative arrangements may not have these notches. The receiving wall 260 is preferably placed at a distance away from the hinge 242, such that during rotation of the receptacle 270 the flange extending from the outer surface 274 of the receptacle 270 is capable of being received within a region between the base surface 284 and rim 265 of receiving wall 260. In this way, rim 265 can force receptacle 270 towards base surface 284 when receptacle 270 is rotated around the hinge. [0067] In another alternative arrangement of this modality as illustrated in FIG. 14, a liner 390 may have tooth contact surfaces for contacting portions of tooth structure, an open area that provides access to tooth portions for removal of tooth structure, a first base surface 384 and a second base surface 389 . [0068] The first base surface 384 may include a first surface 386 facing in a direction opposite to a tooth in the making 60 and a second surface 387 facing in the direction of a tooth in the making 60, in which the first and second teeth surfaces 386, 387 are separated by a frame 388. The first base surface 384 can additionally include a slot 385 having a length and a width. [0069] As shown in FIG. 14, a receptacle 370 can be attached to the first base surface 384 using slot 385. Like receptacle 270 previously disclosed here, receptacle 370 may likewise surround a portion of a carcass of a treatment set. tooth such as the tooth treatment set housing when the housing is installed inside receptacle 370. Receptacle 370 preferably has a bottom base 323 from which a side wall 327 extends upward and around its periphery, leaving an opening 329 on one end. Aperture 329 is large enough to accommodate the thickness of the connecting end of the hand clamp. A combination of bottom base 323 and side wall 327 forms inner and outer surfaces of the receptacle. The inner surface 373 of receptacle 370 preferably conforms to the shape of a tooth treatment assembly housing, such as the tooth treatment assembly housing. The receptacle 370 may also have a head locking aspect which is capable of engaging a cutout located on a tooth treatment set housing such as the tooth treatment set housing 250 and an axis locking aspect which is capable of engaging a cutout located on a connecting end of a tooth treatment set such as the connecting end of the tooth treatment set. A tool opening 324 extends through the thickness of the bottom base 323 of the receptacle 370, to enable a tooth treatment element such as the tooth treatment element, as well as water jets or air currents, to pass through. [0070] The receptacle 370 may additionally include a guide plate 376 secured through a connection portion to the bottom base 323. The guide plate 376 is wide. In a preferred arrangement, the width of the guide plate 376 is greater than the slot width of the first base surface 384. In addition, the connecting portion 375 preferably has a length substantially equal to the thickness of the slot 360, and thus the plate guide 376 is preferably located at a distance from the bottom base 323. In this way, when the guide plate 376 is inserted through the first surface, then the thickness of the slot 360 of the first base surface 384, the guide plate 376 is held substantially against the second surface 387 and thus limits the movement of the receptacle 370 in the direction towards the tooth being worked out 60. In addition, when the guide plate 376 is inserted into the slot 360, the connecting portion 375 of the receptacle 370 contacts the interior surface of the slot 360 to limit the lateral movement of the receptacle 370 in relation to the tooth being prepared 60 being treated. Such a configuration thus limits the movement of a tooth treatment set adapted to fit within receptacle 370 and a corresponding tooth treatment element in relation to the tooth being prepared 60 being prepared. [0071] In each of the modalities represented here, the coating 290, 390 should preferably remain fixed and not move, once it is placed around the tooth in preparation 60. In addition, the coating 290, 390 should remain in a stable position even when a dental instrument designed for use as a coating 290, 390 such as the dental appliance makes contact with it. The position of the coating 290, 390 can be ensured by contacting the contact surfaces 282 of the coating 290, 390 with tooth surfaces or by using a bonding agent such as one that is cured by light, or a temporary cement, or by projections from the casing 290, 390 that engage portions of a tooth including the developing tooth 60, any of the adjacent teeth 65, or teething in the opposite jaw. [0072] It may be possible to use the same configuration of a coating, such as coatings 90, 290 described here previously, made for a tooth, in the preparation of a tooth of the same or a different patient, where such another tooth has shape dimensions and sufficiently similar condition. Therefore, it is within the scope of this invention to have some coatings prepared, which can be standardized, reused and / or reproduced. It is also within the scope of this invention to use data obtained in the preparation of previous coatings and restoration parts in the design and generation of new coatings that have substantially similar dimensions and shapes. [0073] A dentist can use a dental instrument such as the dental instrument 10 and a coating configuration such as the coating 90 described above, to accurately remove portions of the structure of a tooth in process. It is generally preferred to retain and use both a healthy tooth in preparation and a practical one. When a tooth is damaged or infected, the damaged and / or infected parts of the tooth may need to be removed first, and the tooth may need to be rebuilt before preparing the tooth for further treatment with a restorative device. Preliminary repair, or reconstruction of the tooth, minimizes the possibility that an infection will develop beneath a tooth restoration piece. This also maximizes the useful life of the tooth restoration piece, when the base for the tooth restoration piece, namely the tooth being made, no longer contains defective or damaged portions. [0074] Several methods are known to acquire three-dimensional data from a patient's dentition to determine the portions of a tooth that should be removed based on decay factors and structural defects, as well as portions of the tooth that should be kept intact for provide sufficient strength in the final preparation of a dental coating configuration. Such data can be retrieved, for example, by processing and analyzing photographs, X-rays, or other information taken from the patient's dentition, or directly obtaining such data from the patient through the use of intraoral scanning devices. Another method is to make a physical impression of the dentition and then, then scan this impression or an inverted cast of the impression. Such scanning can be conducted with a 3D CAD / CAM scanning device. An example of such a device is the Activity 101 Scanner from Smart Optics, DentalWings 3-series Scanner, or 3Shape 710 Scanner from Woburn, Mass., USA. Although such a scanning device can scan a model of the dental arch with a tolerance of approximately 10 microns, this does not take into account other error factors obtained from performing the impression and casting the dental impression. When preparing the final restoration piece, or dental prosthesis, these other factors of error or tolerances must be considered. [0075] The CAD program can choose the specific configuration for the coating, and finally the configuration for the prepared tooth, using certain protocols that are based on previous experiences to prepare dental prostheses. [0076] After acquiring the three-dimensional data, this data can be processed by a computer, in order to determine a portion of the tooth structure to be removed from the tooth. The portion of the tooth to be removed will be determined with a view to any further treatment of the required tooth. If a particular shape of the prepared tooth is required to allow for further treatment, the portion for removing tooth structure will be chosen so that after preparation of the tooth this particular shape will remain. [0077] Determining the portion to remove the tooth structure depends on several parameters that will differ from case to case. Parameters include the location of the tooth in the patient's mouth, quantity and location of the damaged tooth structure, distance from the tooth to neighboring teeth, the patient's bite, etc. In a preferred embodiment, the computer will also take into account the different parts of the tooth, such as enamel, dentin, pulp, cement, etc., when determining the predetermined part. It is also understood within the generic aspects of the invention that the patient's tooth may have to be constructed using conventional techniques and materials prior to the actual step of preparing the tooth using the coating, or after preparation if decay is exposed. [0078] According to the invention, the computer is programmed to automatically determine the predetermined part of the tooth structure to be removed. However, also according to the invention, the computer can be programmed either by manually selecting parameters or actually entering code to determine the portion for removal of the tooth structure subject to additional limitations or parameters imposed by a professional. The introduction of the professional can be included by viewing data related to the tooth on a computer display and allowing the professional to enter a parameter related to the preparation of the tooth. Preferably a prediction of the tooth is displayed on the computer display along with a prediction of a simulation of the prepared tooth, in order to allow a professional to see the impact of chosen parameters on the prepared tooth. This latter aspect provides a greater degree of freedom for the dentist or professional to benefit from the advice of other professionals. The method for producing a dentist tool according to the invention allows a less experienced dentist to benefit from computer aided recommendations, as well as other professionals. [0079] Next, the dental coating is installed in a patient's mouth in a way to hold the coating in a position to enable the coating to limit the dentist's movement of a tooth treatment element of a dental instrument. A dental instrument is then employed in a patient's mouth orienting him in such a way that guide projections extending from the dental instrument are situated between the guide surfaces of two or more guide walls that are arranged in a configuration to contact the guide projections. [0080] In one embodiment, a bottom surface of a projection head on a dental instrument can rest on a top surface of the guide walls. In this way, the predetermined height of the guide walls determines the depth of penetration of a tooth treatment element in a dental instrument. When the top surfaces of the guide walls are substantially flat and a portion of a dental instrument such as a projection head is deposited across these top surfaces, the dental instrument can be slid along these top surfaces. [0081] Finally, the dentist's instrument can be operated in conjunction with the dental coating. In this regard, when a tooth treatment element such as a dental drill extends from a dental instrument by sliding the dental instrument along the top surfaces, it will produce a predetermined depth or predetermined depths of cut within a tooth. prepared 70, as shown in FIG. 10. Consequently, the limitations of the guide surfaces of the guide walls together with the limits adjusted by the height of the guide walls on a tooth treatment element of a dentist's instrument, define a three-dimensional region of the tooth under elaboration in which portions of the structure of the tooth tooth are removed. [0082] Although the invention has been described herein with reference to particular modalities in both the described and illustrated contexts, it should be understood that these modalities are merely illustrative of the principles and applications of the present invention. It should, therefore, be understood that numerous modifications can be made to the illustrative modalities, and that other arrangements can be envisaged without departing from the spirit and scope of the present invention as defined by the appended claims.
权利要求:
Claims (15) [0001] 1. Dental coating (90, 390) for temporary installation in a patient's mouth to guide a dental instrument (10) with a dental treatment element (52) configured to remove a portion of the tooth structure, the dental coating configured to limit the tooth structure removed from a tooth in the removal of a predetermined portion of the structure of the tooth in process to be removed from a tooth in process (60) to be treated, the coating characterized by the fact that it comprises: (i) a base ( 80, 387) with one or more teeth contact surfaces configured to come into contact with portions of one or more teeth in a patient's mouth to secure the cover in a suitable position in relation to the tooth to be treated, and the base still having one or more open areas configured to expose the portion of the tooth structure in preparation to be removed; and (ii) a cutting guide comprising one or more sets of predetermined guide walls (86, 87, 88, 89) extending from the base, adjacent guide walls (86, 87, 88, 89) of each set of predetermined guide walls defining the guide surfaces (83, 84), the guide surfaces being spaced to receive and having a predetermined configuration capable of coming into contact with one or more guide projections (21) of the dental instrument to limit the movement of the dental treatment element to restrict the portion of the tooth structure in preparation to be removed to the predetermined portion of the tooth in preparation to be treated, in which the adjacent guide walls of each set of the adjacent predetermined guide walls are spaced to receive one of the projections guide in the direction of the tooth to be treated and the one or more open areas are configured to expose the tooth structure and to receive the dental treatment element, which the dental treatment element ntary is movable within one or more open areas in a direction transverse to the longitudinal axis of the dental treatment element. [0002] 2. Dental lining (90) according to claim 1, characterized in that the adjacent guide walls of each set of predetermined guide walls define, in combination with the base, a respective lateral opening for receiving one of the guide projections of the dental instrument through the side opening, a combination of a guide wall for each of the adjacent guide wall sets and the base defining a side opening for receiving the dental treatment element through the side opening, where the side opening is more wider than each of the side openings within a foreground including the side opening and each of the side openings, and wherein the surfaces of the adjacent guide walls of each set of predetermined guide walls have a predetermined configuration capable of contacting one of the projections guide of the dental instrument to limit the movement of the dental treatment element and thus restrict the tion of the functional dental structure to be removed to the predetermined portion of the functional tooth to be treated. [0003] Dental coating (90) according to claim 1 or 2, characterized in that the adjacent guide walls of a guide wall have a predetermined height configured to limit the movement of the tooth treatment element in the apical direction of the tooth to to be treated. [0004] Dental coating according to any one of claims 1 to 3, characterized in that the guide walls within any of the adjacent guide wall assemblies are substantially parallel to each other over their complete heights. [0005] Dental coating (90) according to any one of claims 1 to 3, characterized in that the guide walls within any of the adjacent guide wall assemblies are curved around the same axis. [0006] Dental coating according to any one of claims 1 to 3, characterized in that the guide walls within any of the adjacent guide wall assemblies are not parallel to each other. [0007] Dental coating (90) according to any one of claims 1 to 6, characterized in that the coating is configured to limit the movement of the dental instrument in the distal direction. [0008] Dental coating (90) according to any one of claims 1 to 7, characterized in that the coating is configured to limit the movement of the dental instrument in a direction substantially parallel to the proximal surfaces of the tooth to be treated. [0009] Dental coating (90, 390) according to any one of claims 1 to 8, characterized in that the coating is configured to prepare the tooth in preparation to be treated to receive one or more of a crown, block, support , bridge and cladding. [0010] Dental coating (90, 390) according to any one of claims 1 to 9, characterized in that the predetermined configuration of the cutting guide limits the movement of the tooth treatment element of the dental instrument so that the portion of the cutter tooth structure in process removed from the tooth in process includes the tooth structure subjected to a condition of chipping, cracking, cavities, and / or structural weakness. [0011] Dental lining (90) according to any one of claims 1 to 10, characterized in that at least one guide wall of the adjacent guide wall assemblies extends over one or more open areas. [0012] Dental coating (90, 390) according to any one of claims 1 to 11, characterized in that the contact surfaces of the teeth have a contoured shape that substantially corresponds to an external shape of the teeth in the patient's mouth for which the base of the dental coating device is configured to contact. [0013] 13. Dental system, characterized by the fact that it comprises: the dental coating (90, 390) as defined in any one of claims 1 to 12; and a dental instrument (10) configured for use with the dental coating to limit the movement of the dental instrument. [0014] 14. Dental system, according to claim 13, characterized by the fact that the dental instrument comprises: a hand clamp (30); a dental treatment set (50) including a dental treatment element (52) configured to remove a portion of the dental structure of a working tooth; and a plurality of guide projections (21) extending from the tooth treatment assembly towards the portion of the elaborating tooth structure to be removed when the tooth treatment element is in position to remove the elaborating tooth structure , each of the plurality of guide projections spaced from the dental treatment element of the dental treatment set and configured for reception between and for contact with the guide walls of one of the adjacent guide wall sets of the dental overlap cutting guide nearby of the drafting tooth to limit three-dimensional movement of the dental treatment element and to restrict the portion of the drafting tooth structure to be removed to the predetermined portion of the drafting tooth to be treated. [0015] Dental system according to claim 14, characterized in that the dental lining (90) includes a plurality of predetermined guide wall assemblies, each of the plurality of predetermined guide wall assemblies being spaced so that the predetermined guide walls are configured to receive and contact the respective guide projections of the dental instrument to limit the movement of the tooth treatment element and thus restrict the portion of the working tooth structure to be removed to the predetermined portion of the working tooth to be treated.
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同族专利:
公开号 | 公开日 EP2739240B1|2020-07-15| US20210338374A1|2021-11-04| WO2012162605A2|2012-11-29| RU2013156833A|2015-07-10| IL229570D0|2014-01-30| EP2739240A2|2014-06-11| MX2013013872A|2014-05-28| BR112013030235A2|2017-09-26| US10426572B2|2019-10-01| RU2017109831A3|2020-09-18| IL229570A|2020-01-30| RU2017109831A|2019-01-23| CR20130613A|2014-03-12| JP2018086276A|2018-06-07| PT2739240T|2020-10-21| JP2020032269A|2020-03-05| HUE051046T2|2021-01-28| IL271921D0|2020-02-27| RU2745030C2|2021-03-18| US20140248577A1|2014-09-04| WO2012162605A3|2014-05-08| RU2615120C2|2017-04-03| EP2739240A4|2015-07-22| JP6628820B2|2020-01-15| BR122020013944B1|2021-06-08| HK1198901A1|2015-06-19| JP2014516707A|2014-07-17| US11033356B2|2021-06-15| JP6978480B2|2021-12-08| JP6338522B2|2018-06-06| ES2823723T3|2021-05-10| US20170172702A1|2017-06-22|
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法律状态:
2018-12-11| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]| 2020-03-17| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]| 2020-08-18| B06A| Patent application procedure suspended [chapter 6.1 patent gazette]| 2020-12-01| B09A| Decision: intention to grant [chapter 9.1 patent gazette]| 2021-02-02| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 25/05/2012, OBSERVADAS AS CONDICOES LEGAIS. |
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申请号 | 申请日 | 专利标题 US201161490361P| true| 2011-05-26|2011-05-26| US61/490,361|2011-05-26| PCT/US2012/039569|WO2012162605A2|2011-05-26|2012-05-25|Dental tool and guidance devices|BR122020013944-7A| BR122020013944B1|2011-05-26|2012-05-25|dental system, dental coating, and method for producing a dental coating| 相关专利
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