• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Process for the manufacture of a dental structure, a dental structure and a dental assembly, formed by a structure screwed on a dental implant refers to a method of manufacturing a dental structure intended to be placed and screwed onto a previously osseointegrated dental implant, as well as to the structure obtained according to said procedure and to the dental assembly formed by said structure and the implant. (Machine-translation by Google Translate, not legally binding)
    公开号:ES2658985A1
    申请号:ES201631582
    申请日:2016-12-13
    公开日:2018-03-13
    发明作者:Esteban Xam-Mar Mangrane
    申请人:Esteban Xam-Mar Mangrane；
    IPC主号:
    专利说明:

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    PROCEDURE FOR THE MANUFACTURE OF A DENTAL STRUCTURE, DENTAL STRUCTURE OBTAINED AND DENTAL ASSEMBLY FORMED BY A SCREWED STRUCTURE ON A DENTAL IMPLANT
    DESCRIPTION
    OBJECT OF THE INVENTION
    The present invention, a process for the manufacture of a dental structure, a dental structure obtained according to the previous procedure and a dental assembly, formed by a structure screwed onto a dental implant, refers to a method of manufacturing a dental structure intended to be located and screwed on a previously osteointegrated dental implant, as well as the structure obtained according to said procedure and the dental assembly formed by said structure and the implant.
    The field of application of the invention is the dental sector and more specifically the manufacture of custom dental implants.
    BACKGROUND OF THE INVENTION
    The objective of a dental implant is the replacement of a lost dental root with a medical prosthesis, with the consequent restoration of both aesthetics and dental functionality. When placing an implant in the mouth it may happen that there is a lack of bone so that the implant has a solid support, so that for optimal positioning, it must be placed at an angle, so that the axis of the implant, and therefore the exit of the screw that will hold the dental prosthesis protrudes towards the vestibular face, damaging the aesthetics and functionality.
    Although there have been various solutions for this problem since years, such as the use of fixed angled pillars and customizable fixed cemented stumps on previously mechanized pillars, it has been CAD-CAM technology (Computer-Aided Design - computer-aided design and Computer-Aided Manufacturing - computer-aided manufacturing) which has allowed the manufacturing of structures for dental prostheses eliminating all the inconveniences of previous techniques. One of the structures manufactured in CAD-CAM are individualized stumps, bridges or complete upper or lower arches with an emergency profile and custom shape to each patient and situation, which are subsequently screwed to the dental implant or implants. Also, this technology has allowed the performance of dentures or dental structures without
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    intermediate elements at an angle. The consequent problem of this technique is that it is necessary to mechanize in said dental structure, not only the proper connection of the implant but also the settlement of the head of a screw that will hold the structure to the implant inside an angled channel practiced in the structure .
    Current milling techniques for screw settling, such as that described for example in Spanish patent number ES2345636-T3, have various limitations, mainly derived from the milling process of screw settling inside the channel, since said channel is only from the same direction through which the final screw that will fix the prosthesis or dental structure to the implant will enter. In this way an oversized screw inlet channel is obtained that structurally affects the prosthesis and limits the fabrication of some more complicated situation. Likewise they only allow settlements for screws with conical or semi-spherical heads, since being the entrance channel of the angled milling tool, it is only possible to mill with a ball tool, thus preventing the creation of a straight settlement or some conical .
    There is therefore a need for a new technique for manufacturing dental structures that minimize the diameter of the canal and in turn allow the placement of screws with straight and conical settlement without limitation.
    DESCRIPTION OF THE INVENTION
    In accordance with the foregoing, the present invention is intended to eliminate several of the aforementioned drawbacks and offer a manufacturing process resulting in a prosthesis or dental structure that can be screwed onto implants. Structures of this type are characterized in that the axis of the screw inlet channel in the structure is not coincident with the central axis of the dental implant. Also, said structures are formed from a body or individual raw block that is transformed into a dental piece that is subsequently placed on one or several dental implants. As dental structure should be understood any dental prosthesis that can be an individual crown, bridges, bars, complete and any dental system that connects with an implant.
    Therefore, a first object of the invention is a method of manufacturing a dental structure according to claim 1. Specifically, said method comprises the following steps:
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    - Drilling of a machined body in the shape of a dental piece along a first axis generating a first channel with a first diameter,
    - Introduction into said first channel of a tool of variable shape according to the type of settlement of a screw for the subsequent fastening of the structure, and
    - Machining of the interior of the first channel by extending its diameter by at least a second section, determined by a first section with a first diameter and a second section with a second diameter, larger than the first.
    The dental structure is completed with the drilling of said body generating a second channel, which connects with the first channel, along a second axis that forms an angle greater than 0 ° and less than or equal to 45 ° with the first axis of the first channel Said second channel can be performed either before or after drilling the first channel.
    The structure will comprise a form that will vary depending on the function to be performed, and is generally divided into two parts, an aesthetic part and another part that is the connection to the implant.
    A second object of the invention is a dental structure according to claim 5, and in particular obtained according to the procedural claims.
    A third object of the invention is a dental assembly according to claim 6, formed by the structure object of the invention and a dental implant.
    DESCRIPTION OF THE FIGURES
    To complete the description that is being made and in order to facilitate the understanding of the features of the invention, a set of figures with an illustrative and non-limiting nature is attached to the present specification:
    Figures 1 to 6 show the manufacturing steps of the structure object of the invention, showing in Figure 6 the finished structure.
    Figure 7 shows a dental assembly object of the invention comprising a structure obtained according to the manufacturing process of the present invention and a dental implant.
    PREFERRED FORM OF EMBODIMENT
    In view of the aforementioned figures, a description of a preferred embodiment of the present invention will be described below.
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    The embodiment details the manufacturing process of a dental prosthesis or structure 20, made of metal, preferably chosen from zirconium, titanium, chromium-cobalt alloys or other biocompatible materials, according to the present invention.
    From a body shaped like a dental piece 20, it is drilled inferiorly with a drill 41 to generate a first channel 21 along a first axis "a" and with a first diameter. Said first axis "a" coincides with the axis of the osteointegrated dental implant 50 to which the dental structure 20 will subsequently be screwed.
    Once that first channel 21 with a certain length is practiced, a milling tool 31 for machining this first channel 21 is introduced therein, said tool 31 preferably having an L-shape as seen in Figure 4. to. Alternatively, and as shown in Figure 4.b., the tool 31 has an L-shape but slightly different in order to create a settlement for a conical head screw. The milling tool 31 is introduced in the first channel 21, and once a certain distance has been reached from the entrance of the first channel 21 in the piece 20, and which determines a first section 21 of the first channel 21, said tool 31 begins to move radially, thus widening the diameter of the first channel 21 and beginning to generate, along with a translational movement along the first axis "a" a second section 22 in the first channel 21. During the generation of this second section 22 the axis of the tool 31 coincides with the axis "a" of the first channel 21. Through this milling of the interior of the first channel 21 a step 24 is created between the first section 21 and the second section 22 forming a settlement 24 for the screw 10 responsible for securing the structure 20 with the osteointegrated dental implant 50, and in particular a settlement 24 for the head of said screw 10. Depending on the shape of said milling tool, the settlement 24 will be straight (shown in figures 4.a., 5 and 6), so that the bearing surface of the screw head 10 is perpendicular to the wall of the first 21 and second 22 sections of the first channel 21, or inclined (shown in the figure 4.b.) with respect to the walls of said two sections 21, 22.
    Subsequently, a second drilling is carried out in the upper part of the body 20 generating a second channel 23, which will cross the first channel 21, along a second axis "b". Said second axis "b" forms an angle greater than 0 ° and less than or equal to 45 ° with the first axis "a". This second channel 23 can be made before or after the first channel 21, and if it is done after the first channel 21, it can be done before or after that machining 24 inside said first channel 21.
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    After the realization of said second channel 23, the dental structure that is also the object of the present invention has been completed.
    The first diameter of the first channel 21, coinciding with the diameter of the first section 21 of said first channel, is smaller than the diameter of the second section 22 of the first channel and the diameter of the second channel. In fact, this first diameter is equal to or slightly larger than the diameter of the thread of the screw 10 that will hold the structure 20 to the implant 50. Also, the second diameter of the first channel 21, equivalent to the diameter of the second section 22 of the first channel, It is equal to or slightly larger than the diameter of the head of said screw. Likewise, the diameter of the second channel 23 is also equal to or slightly greater than the diameter of the head of the clamping screw, whereby the second diameter of the first channel 21 and the diameter of the second channel 23 can be the same.
    In this way, and by means of the manufacturing process described, it is possible to reduce the material torn from the interior of the body 20 of the structure, reducing its structural weakening with respect to the existing procedures, since the material removed from the interior is the minimum necessary for the passage of the screw 10 through the structure 20, and not for the passage of the tool that is larger.
    As both channels 21, 23 are communicated, a continuous channel is provided from the upper part of the body 20 of the structure for the screw 10, said continuous channel being formed by two mismatched axes, "a" and "b", of the same such that the first axis "a" is vertical to the implant 50 and the second axis "b" is inclined with respect to said first axis "a", having at least two different diameters, one that allows the screw thread 10 to pass through and another that allows the screw head 10 to pass through, said continuous channel having a seat 24 for the screw head 10, thus the captive screw 10 being between the two channels 21, 23.
    Once the dental structure 20 is manufactured, it is assembled on an osteointegrated implant 50 by means of the clamping screw 10 determining a dental assembly also object of the present invention. Said dental assembly is therefore formed by structure 20, a dental implant 50 and a clamping screw 10.
    The thread of the screw 10 has a diameter slightly smaller than the diameter of the first section 21 of the first channel 21 of the structure and the head of said screw 10 has a diameter slightly smaller than the diameter of the second channel 23 of the structure. This relationship between the diameters allows the introduction from the top of the piece 20 of the screw 10, so that it travels through the second channel 23 and the second section 22 of the first channel 21 until the head of the screw 10 reaches the settlement 23 which prevents
    that the screw 10 goes out from the bottom of the piece 20. That is, the screw 10 has a thread with a diameter in relation to the diameter of the first section 21 of the first channel 21 of the structure and a head that has a diameter in relation to the diameter of the second channel 23 of the structure 20.
    5 Subsequently, and through the corresponding tool, which is introduced to
    through the second channel 23 until reaching the head of the screw 10, a pair is applied on said head to screw the structure 20 to the osteointegrated dental implant 50.
    It should be borne in mind that instead of mounting the structure 20 on the dental implant 10 50, it is possible to mount it on an intermediate piece.
    权利要求:
    Claims (10)
    [1]
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    1. Procedure for the manufacture of a dental structure from an individual raw body that will be transformed into a dental piece for subsequent placement on one or more osseointegrated dental implants, characterized in that it comprises the following stages:
    - Drilling of the body along a first axis generating a first channel with a first diameter,
    - Introduction into said first channel of a milling tool, with the shape according to the settling of a screw to be introduced into the channel, for the machining of the channel and the settling of the screw, and
    - Machining of the interior of the first channel by extending its diameter by at least a second section, determined by a first section with a first diameter and a second section with a second diameter, larger than the first.
    [2]
    2. Method according to claim 1, characterized in that it comprises drilling said body by generating a second channel along a second axis that forms an angle greater than 0 ° and less than or equal to 45 ° with the first axis of the first channel, connecting with said first channel.
    [3]
    3. Method according to claim 2, characterized in that the diameter of the second channel is larger than the first diameter of the first channel.
    [4]
    Method according to claim 1, characterized in that the milling tool mechanizes a straight settlement between the first section and the second section of the first channel, perpendicular to the walls of the channel.
    [5]
    5. Method according to claim 1, characterized in that the milling tool mechanises a conical settlement between the first section and the second section of the first channel, inclined with respect to the walls of the channel.
    [6]
    6. Dental structure obtained according to claims 1 to 5.
    [7]
    7. Dental assembly, characterized in that it comprises a dental structure according to claim 6, and an osteointegrated dental implant joined together by a screw whose thread has a diameter in relation to the diameter of the first section of the first channel of the structure and whose head has a diameter in relation to the diameter of the second channel of the structure.
    [8]
    8. Dental assembly according to claim 7, characterized in that the axis of the dental implant coincides with the axis of the first channel of the structure.
    [9]
    9. Dental assembly according to claim 7, characterized in that the screw head is conical.
    [10]
    10. Dental assembly according to claim 7, characterized in that the screw head is straight.
    5. Dental assembly according to claim 7, characterized in that the structure is of a
    material chosen from zirconium, titanium alloys, chromium-cobalt or other biocompatible materials.
    类似技术:
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    US20180078345A1|2018-03-22|Dental superstructure with curved channel and method of forming a curved channel therein
    KR101091587B1|2011-12-13|Dental implant abutment
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    KR101375154B1|2014-04-21|Healing abutment having natural tooth shape
    US20090191508A1|2009-07-30|Mini implant
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    KR100842318B1|2008-07-01|Titanium sleeve for dental implant and dental implant having the same
    WO2015040250A1|2015-03-26|Interface element for dental prostheses
    ES2684170T3|2018-10-01|Device for the placement of a dental prosthesis
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    JP6649555B2|2020-02-19|Integrated implant
    ES2590002B1|2017-05-31|BLOCK FOR THE MANUFACTURE OF INDIVIDUALIZED DOLLS FOR DENTAL IMPLANTOLOGY AND MANUFACTURING PROCEDURE OF A PERSONALIZED DOLL FOR DENTAL IMPLANTOLOGY
    KR101715474B1|2017-03-10|The link of customized zirconia abutment for droping out and node of zirconia coping
    TWI541009B|2016-07-11|Dental implant fixture
    KR20130083632A|2013-07-23|Abutment system for regeneration of gingival and alveolar bone according to contour of extracted tooth
    KR101091588B1|2011-12-13|Dental implant fixture
    US20210137650A1|2021-05-13|Abutment with embedded screw
    ES2611760B1|2018-02-13|SET OF DENTAL IMPLANT AND PROTESTIC COMPONENTS, WHICH INCLUDES A TRANSEPITELIAL SHIRT WITH ANTIRROTATIONAL SUPERIOR CONNECTION
    ES2584167B1|2017-09-12|INTERFACE ELEMENT FOR DENTAL PROSTHESIS
    KR101276539B1|2013-06-24|Implant
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    ES2658985B1|2019-01-11|
    CA3008549A1|2017-07-27|
    AU2016387204B2|2021-03-04|
    US20190021824A1|2019-01-24|
    EP3524206A1|2019-08-14|
    EP3378434A1|2018-09-26|
    WO2017125621A1|2017-07-27|
    EP3378434B1|2020-05-20|
    AU2016387204A1|2018-07-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4019279C1|1990-06-16|1992-01-02|Peter Dr.Med.Dent. 4350 Recklinghausen De Bembenek|Support pin for tooth - has plastics binder used to hold post in place after drilling|
    US5116225A|1990-10-17|1992-05-26|Riera Juan C A|Angulated abutment for osseointegrated implants|
    DE202007019558U1|2006-08-25|2013-08-07|Biomain Ab|Dental superstructure|
    GB2494099A|2011-07-06|2013-03-06|Nobel Biocare Services Ag|Dental component with an angled screw channel|
    DE102013102402B4|2013-03-11|2018-10-11|Bruno Spindler|MILLING ROLL FOR AN ABUTMENT PACK|
    DE102013013565B4|2013-07-17|2018-05-24|Bruno Spindler|Suprastructure carrier and a method for its production|
    DE102013014660A1|2013-09-03|2015-03-05|Ivoclar Vivadent Ag|Supraconstruction for an implant system, blank for its manufacture and associated screwdriver|
    EP3287094B1|2015-04-23|2019-12-11|Esteban Xam-Mar Mangrane|Block for producing individual root post flanges for dental implantology and method for producing a personalised root post flange for dental implantology|EP3231391B1|2016-04-14|2018-12-26|Neoss Limited|Screwdriver and screw for medical applications, in particular for dental applications|
    法律状态:
    2019-01-11| FG2A| Definitive protection|Ref document number: 2658985 Country of ref document: ES Kind code of ref document: B1 Effective date: 20190111 |
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    优先权:
    申请号 | 申请日 | 专利标题
    PCT/ES2016/070030|WO2017125621A1|2016-01-21|2016-01-21|Method for the production of a dental structure, produced dental structure and dental assembly formed by a structure screwed onto a dental implant|
    WOPCT/ES2016/070030|2016-01-21|
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