• 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:
    A dental instrument has been developed which is suitable for use in performing dental filling. The dental instrument comprises a wedge and a matrix. The matrix is fixed to the wedge and the wedge is adapted to be inserted into the approximate surface between two teeth of a single patient. The wedge comprises an arcuate shape along a longitudinal axis of the wedge, the matrix comprises a first arcuate shape along a longitudinal axis of the matrix and the matrix comprises a second arcuate shape along a single axis vertical to the longitudinal axis of the matrix. A method has also been developed for using the dental instrument, as well as a disposable system which also includes a protective part. (Fig. 6) JL 61297
    公开号:SE0900081A1
    申请号:SE0900081
    申请日:2009-01-27
    公开日:2010-07-28
    发明作者:Dan Eriksson；Jan Johansson；Oerjan Arkaeng；Stefan Leffler；Olof Larsson
    申请人:Directa AB；
    IPC主号:
    专利说明:

    Placing a matrix band and achieving a good point of contact after excavation for fillings is often a time consuming and painful procedure. Previous matrices have generally had flat boundary surfaces held against teeth and gums with small wedges of wood or plastic. The small, loose wedges are difficult to handle and create discomfort and pain. In addition, since the former matrices tend to be relatively inflexible and not anatomically shaped, they do not seal sufficiently against the tooth. The sharp metal matrix also creates jack and discomfort.
    Thus, previously known combinations of wedges and matrices lack the ability to create an adequate seal against the tooth, counteract damage to the gums and offer a comfortable treatment for the patient.
    Options such as sectional matrices combined with retention are also very cumbersome and time consuming to place correctly. The pressure created on the teeth from the tension of the metal matrix as well as the fact that the sharp metal matrix is placed in direct contact with the patient's gums, creates pain and increases the risk of gingivitis occurring during a dental treatment.
    SUMMARY A dental instrument has been developed which is suitable for use in performing a dental filling. The dental instrument consists of a wedge and a matrix. The matrix is attached to the wedge and the wedge is adapted to be inserted into the approximate surface between two teeth of a patient.
    The wedge comprises an arcuate shape along a longitudinal axis of the wedge and the die comprises a first arcuate shape along a longitudinal axis of the array and a second arcuate shape along an axis which is vertical to the lumbar axis of the matrix.
    According to one embodiment, the arcuate shape of the wedge comprises at least two bends along the longitudinal axis of the wedge.
    According to one embodiment, the wedge comprises a wing, which can be adapted to become deformable and / or elastic.
    According to an embodiment of the dental instrument, the matrix also comprises a cup-shaped area.
    According to all embodiments above, the dental instrument can be adapted for single use use.
    JL 61297 10 15 20 25 30 A disposable system has also been developed which is suitable for use in performing a dental filling. The disposable system comprises a protective part for single use, adapted for insertion into the approximate surface between two teeth when excavating at least one of the teeth in connection with said approximate surface. The system further includes a dental instrument comprising a wedge and a die. The matrix is attached to the wedge and the wedge is adapted to be inserted into the approximate surface between two teeth of a patient. The wedge comprises an arcuate shape along a longitudinal axis of the wedge and the die comprises a first arcuate shape along a longitudinal axis of the die and a second arcuate shape along an axis which is vertical to the longitudinal axis of the die.
    A method has been developed for performing a filling in a tooth using the dental instrument according to any of the embodiments above. The method includes the steps of inserting the dental instrument according to any of the above embodiments into the approximate surface between two teeth from the buccal (tooth surface facing the cheek) or lingual (tooth surface facing the tongue) side, positioning a material adapted to create a filling, in contact with the tooth and the dental instrument, harden the material and remove the dental instrument. According to one embodiment, the dental instrument comprises at least one wing, which may be deformable and / or partially elastic.
    BRIEF DESCRIPTION OF THE DRAWINGS The embodiments are now described, by way of example, with reference to the accompanying drawings, in which: Fig. 1 shows the dental instrument from the side adapted to be in contact with the tooth receiving the filling.
    Fig. 2 shows the dental instrument from the side adapted to be in contact with an adjacent tooth of the tooth receiving the filling.
    Fig. 3 shows the dental instrument from below, ie. the side that is adapted to be in contact with the gums.
    Fig. 4 shows the dental instrument from above.
    Fig. 5 shows the dental instrument from the side adapted to be in contact with the tooth receiving the filling, in perspective view.
    JL 61297 10 15 20 25 30 Fig. 6 shows the dental instrument from the side adapted to be in contact with an adjacent tooth to the tooth receiving the filling, in perspective view.
    Fig. 7 shows a section of two teeth and the dental instrument placed in the approximate surface therebetween, from the buccal side.
    Fig. 8 shows a section of two teeth and the dental instrument placed in the approximate surface therebetween, from above.
    Fig. 9 shows a protective part, in perspective view.
    DETAILED DESCRIPTION The approximate surface is to be understood as the space between two teeth.
    Contact point shall be understood as the point on a tooth where said tooth is in contact with another tooth.
    Deformable structure is to be understood as a structure adapted to collapse or deform when loaded.
    Partly elastic is to be understood as a material property to be partly deformed in an elastic way and partly in an inelastic way, ie. after deformation of a partially elastic structure, said structure returns only to its original shape or position.
    The following is a detailed description of embodiments. In the drawing figures, like reference numerals refer to identical or corresponding elements in the many gurus. It is assumed that the ur gures are for illustrative purposes only and in no way limit the scope.
    Therefore, all directional references, such as “up” or “down”, are only references to the directions shown in fi gurema. In addition, all dimensions etc. shown in fi gurema are for illustrative purposes only.
    Fig. 1 shows a dental instrument adapted for use in performing a filling to treat dental caries. The dental instrument is mainly adapted for use in recreating a tooth with a smooth surface destroyed by dental caries. Fig. 1 shows the dental instrument from the side adapted to be in contact with a dental filling.
    According to this embodiment, the dental instrument consists of the wedge 1 with a tapered end 7 adapted to be inserted between two teeth from the buccal or mesial (the tooth surface facing the adjacent tooth) side. The other end of the wedge 1 comprises a handling part 1 adapted to facilitate the dentists' handling of the dental instrument.
    According to the embodiments shown in Fig. 1, the wedge 1 and the handling part 4 are parts of the same piece, preferably made of polymeric material, such as polypropylene or polyethylene. The dental instrument further comprises a die 2 attached to the wedge 1 by two fasteners 6a, b which provides a clamping effect in that the upper part of the fasteners 6a, b is slightly expanded after being placed in the holes 8a, b in the die 2. The die 2 is further fixed by the adhesive effect which occurs when the polymeric material is heated. However, according to other embodiments, the fastening elements 6a, b can be assisted by or replaced with an additional fastening substance. According to this embodiment, the matrix 2 is made of stainless steel, but it is also conceivable that the matrix 2 can be made of another metal or plastic material. The matrix 2 further comprises a cup-shaped area 5 with a concave surface directed towards the tooth receiving the filling; the shell-shaped area 5 is adapted to facilitate the creation of a point of contact between the tooth receiving the filling and the adjacent tooth. The point of contact has an important function in blocking the approximate surface and limiting the amount of food residue that accumulates therein. Furthermore, the cup-shaped area 5 eliminates the need for the dentist to polish the matrix 2 to give the filling a suitable shape.
    Fig. 2 shows the dental instrument in Fig. 1 from the side adapted to be in contact with the adjacent tooth of the tooth which is to receive the filling. The wedge 1 has a tapered end 7 and a handling part 4. The wedge 1 further comprises a wing 3 which extends along a longitudinal axis of the wedge 1. According to the embodiment shown in fi g. 2, the wing 3 is part of the same piece as the wedge 1 and the handling part 4. The wing 3 is attached to the wedge 1 along a longitudinal axis of the wedge 1 at a distance from the handling part 4 which enables the wing 3 to become deformable in a partially elastic manner when it is inserted between two teeth, see also Fig. 7. Fig. 2 further shows the cup-shaped area 5 of the matrix 2 from the side which is adapted to be in contact with the tooth which is adjacent to the tooth which receives the dental filling. .
    Fig. 3 shows the dental instrument in Figs. 1 and 2 from below. Wedge 1 comprises an arcuate shape with a first bend 9 with a first radius, and a second bend 10 with a second radius along a longitudinal axis X of the wedge 1. The surface comprising said first and second bends 9, 10 forms the contact surface between the die 2 and the wedge 1 and enables the matrix 2 to have the corresponding surface 30, which provides a seal between the tooth receiving the filling and the matrix 2. Fig. 3 further shows the deformable Wing 3 from below.
    Fig. 4 shows the dental instrument in fi g. 1, 2 and 3 from above where the die 2 shows a first section comprising a first arcuate shape 11 along a longitudinal axis X of wedge 1. The die 2 further comprises a cup-shaped area 5 which assists in the creation of a line of contact between the tooth adapted to take against the filling and the adjacent tooth. Fig. 4 also shows the deformable Wing 3 from above. The definable wing 3 and the cup-shaped area 5 are also shown in Fig. 7.
    Fig. 5 shows the dental instrument of Figs. 1, 2, 3 and 4 in a perspective view from the side in contact with the tooth receiving the filling. The die 2 attached to the wedge 1 has a first arcuate liner 11 along a longitudinal axis X, the first arcuate shape 11 adapted to create a tight seal between the die 2 and the tooth receiving the filling, from the buccal to the lingual side.
    The die 2 further comprises a second arcuate shape 13 along an axis Y vertical to longitudinal axis X of the wedge 1, the second arcuate shape 13 adapted to create a tight seal between the die 2 and the tooth which receives the filling on the proximal side and thereby prevents excess filling of said filling. Fig. 5 also shows the fastening elements 6a, b slightly extended so that they thereby create a clamping part 12a, b which clamps the matrix 2 against the wedge 1. A contact surface 15 on the wedge 1 to which the matrix 2 is fastened is also shown in Fig. 5.
    Fig. 6 shows the dental instrument in fi g. 1, 2, 3, 4 and 5 in perspective view from the side adapted to be in contact with the adjacent tooth to the tooth adapted to receive a dental filling. I vyn i fi g. 6 shows a distance 14 between the handling part 4 and the deformable Wing 3. The distance between the handling part 4 and the deformable Wing 3 allows the deformable Wing 3 to be partially elastic and thereby press and rotate the wedge 1, which in turn presses the matrix 2 against the tooth which receives the filling and thereby create said seal between the matrix 2 and the tooth which receives the filling, also shown in fi g. 7.
    Fig. 7 shows the approximate surface 16 between a tooth receiving a filling 17a and an adjacent tooth 17b. A cavity 18 adapted to receive said filling has, for example, been created in the tooth 17a using a dental drill. The dental instrument has continued into the approximate surface 16 from the buccal or lingual side of the tooth. The wedge 1 is JL 61297 10 15 20 25 30 placed with the lower part adjacent to the gum and the wing 3 is partially deformed and assists in sealing between the tooth receiving the filling 17a and the die 2 by the wing 3 with its elastic properties pressing the wedge 1 and thus matrix 2 against said tooth.
    As shown in Fig. 7, the cup-shaped area 5 of the matrix 2 assists in the creation of a point of contact 19 between the tooth adapted to receive a filling 17a and the adjacent tooth 17b. A contact line 20a in the base of the filling is the area where there is a risk that a harmful excess filling can be created. An excess of filling with excess material between the teeth creates a pocket where food remains accumulate, which in many cases leads to a recurrent attack or gingivitis. Excess filling between the teeth is very difficult to remove after the filling has hardened, as the dentists cannot access the area with a motor instrument and therefore have to use abrasive strips. In order to avoid excess filling, it is of utmost importance that a proper seal is created in contact line 20a between the matrix 2 and the tooth which receives the filling 17a.
    Fig. 8 shows the dental instrument when said instrument is placed between the tooth receiving a filling 17a and an adjacent tooth 17b from above. The dental instrument has its matrix 2 tightly attached to the tooth receiving the filling in that the matrix 2 has an arcuate shape ll along a longitudinal axis X of the wedge 1. The matrix 2 thereby ensures that the filling material does not penetrate the seal between the matrix 2 and the tooth receiving the filling 17a in the two contact lines 20b, c on the buccal and lingual side of the tooth 17a. Fig. 8 also shows how the cup-shaped area 5 of the matrix 2 assists in creating a point of contact 19 between the two teeth 17a, b and facilitates the formation of a filling within desired limits.
    The placement of the dental instrument in the proximal surface 16 from the buccal or mesial side of the tooth facilitates and accelerates the placement of the die 2 while reducing the likelihood of misplacement, which may result in unsatisfactory sealing between the die 2 and the tooth receiving the filling.
    Fig. 9 shows a protective part for disposable use 21 adapted to be inserted into the approximate surface 16 between two teeth 17a, b when excavating at least one of the teeth 17a, b adjacent to the approximate surface 16. The protective part for disposable use 21 comprises a liner 22 for to protect the teeth and a wedge part 23 for attaching the protective part 21 to the approximate surface between two teeth.
    JL 61297 Reference to any prior art in this specification is not and should not be construed as acknowledging or implying that the prior art referred to is part of what is generally known in Australia, or in any other country.
    The invention is not limited to the embodiments described in the figures, but can be freely varied within the scope of the requirements.
    JL 61297
    权利要求:
    Claims (1)
    [1]
    1. 0 15 20 25 30 PATENT REQUIREMENTS. Dental instrument suitable for use in performing a dental filling, the instrument comprising a wedge (1) and a die (2), the die (2) being attached to the wedge (1) and the wedge (1) being adapted to be inserted in the approximate surface (16) between two teeth, characterized in that: a. the wedge (1) comprises an arcuate shape along a longitudinal axis (X) of the wedge (1), b. the matrix (2) comprises a first arcuate shape (11) along a longitudinal axis (X) on the matrix (2), and c. The matrix (2) comprises a second arcuate shape (13) along an axis (Y) vertical to the longitudinal axis of the matrix (2). Dental instrument according to claim 1, wherein the arcuate shape of the wedge (1) comprises at least two bends (9,10) along the longitudinal axis (X) of the wedge (1). . Dental instrument according to one of Claims 1 and 2, in which the wedge (1) comprises a wing (3). . Dental instrument according to claim 3, wherein the wing (3) is deformable. . Dental instrument according to claim 4, wherein the deformable wing (3) is partially elastic. . Dental instrument according to one of the preceding claims, wherein the matrix (2) also comprises the cup-shaped area (5). . Dental instrument according to one of the preceding claims, wherein the dental instrument is adapted for single use. JL 61297 10 15 20 25 25 30 10. A disposable system suitable for use in performing a dental filling, said disposable system comprising: a. A disposable protective member (21) adapted to be inserted into the approximate surface (16) between two teeth (17a, b), when excavating at least one of the teeth adjacent to the approximate surface (16), and b. a dental instrument comprising a wedge (1) and a matrix (2), where the matrix (2) is attached against the wedge (1) and where the wedge (1) is adapted to be inserted into the approximate surface (16) between two teeth, characterized in that: i. the wedge (1) comprises an arcuate shape along a longitudinal axis (X) of the wedge (1) , ii. the matrix (2) comprises a first arcuate shape (11) along a longitudinal axis (X) of the matrix (2), iii. the matrix (2) comprises a second arcuate shape (12) along an axis (Y) vertical to the longitudinal axis of the matrix (2). A method of performing a filling in a tooth using the dental instrument according to any one of claims 1-7, characterized by the following method steps: a. Inserting the dental instrument according to claim 1 into the approximate surface (16) between two teeth from the buccal or lingual side, b. placement of material, adapted to create the filling, in contact with the tooth (17a) and the dental instrument, c. hardening of the material, and d. removal of the dental instrument. The method of claim 9, wherein the step of inserting the dental instrument comprises the step of inserting a dental instrument comprising at least one wing (3) according to any one of claims 3-5. JL 61297
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    引用文献:
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    DE19936461A1|1999-08-03|2001-02-08|Susanne Szep|Dental matrix design in caries treatment involves integrated wedge part complete with waisting using elastic or translucent wedge for adapting to caries site.|
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    US20050089813A1|2003-10-24|2005-04-28|Slone Charles E.|Matrix wedge restorative dental system and method of use|
    US20050089814A1|2003-10-24|2005-04-28|Slone Charles E.|Dental matrix for a class II, III or IV restoration|
    US20050255428A1|2004-05-14|2005-11-17|Allan Coopersmith|Dental insert and method of tooth restoration|
    WO2006056989A1|2004-11-26|2006-06-01|Coll Partners Ltd.|System and method for use in restoration of adjacent teeth, and matrix bands and retainers therefor|
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    US7976308B2|2007-03-27|2011-07-12|Gyula Julius Hegedus|Dental wedges and methods|BR112014029543A2|2012-05-31|2017-06-27|Rhondium Holdings Ltd|dental wedge having asymmetrical sides|
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    法律状态:
    优先权:
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    SE0900081A|SE533814C2|2009-01-27|2009-01-27|A dental instrument and method for dental filling|SE0900081A| SE533814C2|2009-01-27|2009-01-27|A dental instrument and method for dental filling|
    EP10736097.6A| EP2381879A4|2009-01-27|2010-01-20|A dental instrument, system and method|
    PCT/SE2010/050048| WO2010087758A1|2009-01-27|2010-01-20|A dental instrument, system and method|
    US13/143,654| US9149343B2|2009-01-27|2010-01-20|Dental instrument, system and method|
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