JP2001524347A - Dental filler loading device - Google Patents

Abstract

(57) Abstract An apparatus for loading a light transmissive dental filler is described. The device includes a matrix of light transmissive material and shaped to conform to the natural contours of the teeth in the interproximal area. This matrix is thinned in its central area, allowing for filling in close contact with adjacent teeth. Also provided is a light transmissive dental wedge configured to selectively guide light applied to either end of the wedge to the base of the tooth specimen and to introduce the light into between adjacent teeth. Clamps are provided for use with the wedges and / or the matrix or used independently of these devices. The clamp is shaped to fit over the wedge apex and enhances engagement with the tooth over prior art clamps that can prevent the wedge from extending over the tooth by engaging the wedge top.

Description

DETAILED DESCRIPTION OF THE INVENTION

FIELD OF THE INVENTION The present invention relates to a filler loading device, and more particularly to a photocurable dental filler loading device.

[0002] over the background the past 20 years of the invention, the dental technician has been asked to to provide a filling material of natural appearance for the back teeth to the patient. Composite resins have been used to provide such natural appearance fillers. The composite resin has the color of a natural tooth when cured, can be loaded with a single reservation, and does not contain toxic mercury.

[0003] Before filling, the composite resin has a soft putty-like viscosity and is generally incompressible. The composite resin filler is cured by applying a focused light source. A matrix is used to load the composite resin filler. The matrix is a device that wraps around the prepared tooth area. The matrix acts as a mold and limits the spread of the filler beyond the desired boundaries. The mold ideally matches the original anatomy of the interproximal structure. The matrix is generally made of stainless steel or plastic and is a peripheral or cross-sectional matrix. The perimeter matrix is mounted around the entire circumference of the tooth, while the cross-sectional matrix is mounted on only one interproximal region. These matrices are fixed in place using wedges and / or clamps. Wedges have a triangular cross section and are tapered in their length direction. These wedges are placed between the matrix and adjacent teeth to adhere the matrix to the base of the prepared tooth structure. Wedges are generally made of wood or plastic.

[0004] It has been discovered that there is a significant problem in loading a composite resin filler in adjacent interdental areas. Because the resin is incompressible, it is very difficult to create a strong contact point between the newly loaded filler and adjacent teeth. A contact point is a point at which the crown of one tooth contacts or almost contacts the crown of an adjacent tooth. If a gap is formed at this point of contact, food will be trapped between the teeth, causing gingival irritation or irritation, tooth movement and overall discomfort for the patient. If the curing light source is applied in the direction of the occlusal surface, this will cause the resin material to be drawn out of the base of the adjacent tooth specimen in the direction of the light. In this case, the adhesion of the composite resin at the tooth / filler edge becomes poor,
Microscopic leakage of bacteria and saliva between teeth and fillers can occur. This leads to increased sensitivity of the filling area, which often leads to tooth decay.

The prior art ameliorates these problems by providing wedges and matrices made of materials such as acrylics or thermoplastics that are transparent to the curing light of the resinous materials used in dental fillers. Attempted. These devices initially introduce curing light into adjacent teeth so that curing occurs between adjacent teeth.

[0006] Prior art transmissive wedges tend to cause internal reflection of light directed into the wedge, and thus have limited effectiveness.

[0007] device for loading a summary photocurable dental filling material of the invention has been invented. The device includes a matrix of light transmissive material having a shape that conforms to the natural contour of the interproximal area. A light-transmitting wedge that can be used to selectively direct light relative to the base of a tooth specimen and to guide light applied from either side of the interproximal zone between adjacent teeth has also been invented. .

According to a broad aspect of the present invention, there is provided a dental matrix for insertion between adjacent teeth of two teeth. The matrix includes a sheet made of a material permeable to curing light of the dental resin filler, the sheet having a first side and a second side, wherein the sheet is located between adjacent surfaces. The thickness between the first side surface and the second side surface is selected so as to withstand the force received by insertion into the sheet, and the sheet has an edge in contact with the gingiva, and a concave portion formed on the surface of the sheet. A thin portion provided on the sheet so that the thin portion is separated by a predetermined distance from an edge in contact with the gingiva, and the sheet around the thin portion. Is greater than the thickness of the material of the thin portion.

[0009] The matrix according to the invention has a thickness suitable for successful insertion between two adjacent teeth, while creating a narrow spacing in the contact area between adjacent teeth. The matrix is formed in any suitable manner to have a thin portion thereon. More specifically, the thin portion is arranged on a matrix, and the thick portion extends around the thin portion. The thick part acts as a solid frame for the thin part. In one embodiment, the matrix is formed such that its thickness decreases from its edge toward a selected predetermined point on the matrix. Alternatively, thin areas with distinct edges can be formed at selected predetermined locations on the matrix. This matrix acts as a mold against which the composite resin material is pressed. The final cured filler takes the form of a matrix, and light raised portions are formed on the filler corresponding to the locations of the thinner portions on the matrix. Thus, if the thin areas have well-defined edges, a smooth area between the thick and thin areas is ensured so that the raised portions do not cause dental problems (i.e., dental floss snagging) when the filler cures. It must be formed to have a large step. In order to facilitate the production of the matrix, the matrix is formed as one piece, for example by molding a sheet of material containing thin parts. Preferably, the sheet around the thin portion has a thickness in the range of about 0.05 to 0.15 mm, with the thin portion having a thickness of about 0 to 0.15 mm.
. It is selected to have a thickness in the range of 03-0.07 mm.

[0010] The thin portion is disposed on the matrix such that the thin portion is adjacent to the area of contact between the teeth when the matrix is disposed between two teeth. Generally, this thin portion is spaced from the gingival contact edge of the matrix (gingival contact edge) to allow for the spacing between the gingiva and the average tooth contact point. The area of the thin portion can be enlarged to accommodate some variation in the distance from the gum to the point of contact of the tooth. Preferably, the gingival contact edge of the matrix is formed to conform to the shape of the gingival edge between adjacent teeth. More specifically, the edges of the matrix arranged to abut the gums are curved inward. Preferably, the matrix is generally concave so that when the matrix is placed in contact with the teeth, the matrix curves around the sides of the teeth and into the base (neck) of the teeth. The thin portion is formed in the matrix such that the recess is located on the concave side of the matrix.

[0011] The matrix of the present invention can be used with matrix immobilization means.
In one embodiment, the side edges of the matrix are applied with an adhesive to secure the edges of the matrix to the tooth surface to which the matrix is applied. The adhesive is chosen so that it can be peeled from the tooth surface by applying a certain force.

For example, a matrix fixing means with or without an adhesive, such as wedges and / or clamps, can be used. Particularly effective wedges are, of course, light transmissive.

Light transmissive wedges have been invented that enhance the transmission of light between adjacent teeth. That is, according to another broad aspect of the invention, there is provided an elongated body tapered from its first end to the opposite end, comprising a material permeable to curing light of the dental resin filler, A dental wedge was provided having a generally triangular cross section with three sides and a first end having a convex surface.

Such a convex curved surface causes the first end to function as a lens. This causes light directed to the wedge to be directed toward the side of the wedge through a selected focus within the wedge. The convex surface is also selected such that light entering the wedge through the first end is directed toward both sides of the wedge at a wedge portion located between adjacent teeth during use. The position of the wedge portion is generally located between the two ends of the wedge. Preferably, the convex end of the wedge is larger than the cross-sectional area of the adjacent interdental portion of the wedge so that more light is refracted into the wedge through this end. Compared to a wedge having an end equal in area to the wedge cross-section between the three sides, the shape of the first end of the present invention allows more light to enter the wedge. In this way,
The amount of light that strikes the wedge and is refracted laterally outward of the wedge is increased.
Preferably, however, the portion of the wedge that is intended to be used as the bottom is flattened or otherwise shaped so as not to interfere with the gum during wedge insertion.

The end of the wedge opposite the convex end is formed flat such that the wedge has a blunt (not sharp) end. A wedge having such a blunt end can introduce light directed into the end into the wedge. In this way, light can be applied from either end of the wedge to harden the filler between adjacent teeth. Preferably, the blunt end is slightly angled to provide a single leading edge for easy insertion between the two teeth.

The wedge of the present invention is preferably roughened on at least one of its sides at a portion of its surface between the convex end and the blunt end to substantially reduce light impinging on the rough surface. Preferably, the wedges are refracted or reflected laterally outward of the wedges. Also preferably, the surface roughening is carried out on the wedge parts where light is selectively directed. For example, in one embodiment, the wedge is roughened along one edge in a substantially central area between the first end and the opposite end.

The surface roughening can be performed by any appropriate method. For example, roughening can be performed by treating (ie, scratching) the surface of the wedge, during molding with the mold (ie, by providing a grooved structure in the mold, or in a roughening finish such as electrical discharge machining in the mold). ).
If groove structures are used, these grooves are formed to extend at right angles to the longitudinal axis of the wedge. Preferably, each groove has a first inclined surface and a second inclined surface, and these inclined surfaces are concentrated at the groove bottom. The inclined surface of the groove has an angle to the wedge end such that light impinging thereon is refracted outward or refracted toward the opposite inclined surface of the groove and reflected from this opposite side. It is formed as follows. This angle is selected taking into account characteristics such as the refractive index of the wedge material and the curvature of the wedge end. In one embodiment, each groove is formed with a first inclined surface and a second inclined surface forming an angle of about 30 ° to 60 °, preferably 45 ° with respect to the side surface or the wedge longitudinal axis. . Preferably, the wedge is curved in its longitudinal direction to conform to the contour of the interproximal region.

Wedges are extremely effective in holding the matrix in place and introducing curing light between adjacent teeth. The wedge can be used with a clamp configured to be mounted with the wedge, which clamp uses the wedge for its proper placement and engagement. Therefore, according to another broad aspect of the present invention, there is provided a dental holding clamp for simultaneously clamping a dental matrix and a dental wedge from above, comprising a pair of arms extending on a predetermined surface, Arms provided with branches, each branch having a distal end extending out of the plane from which the arm extends, and wherein the distal end branches into two extensions; A dental holding clamp is provided having a notch sized between two extensions to fit a portion of the dental wedge.

These arms are held under tension, and a force must be applied to move these arms. The tooth engaging surface is defined by a branch projecting from the surface of the arm. The branch has a size that extends over at least a portion of the engaged teeth of the clamp. The outer end of each branch branches into two extensions. Between these extensions, a notch is formed that fits over a portion of the wedge. The cutout is preferably formed to closely follow the upper contour of the wedge, and these extensions extend downward along the sides of the wedge. An unnotched clamp will only be pushed down on the teeth until it abuts the wedge. Such wedges have a tendency to "jump out" of the tooth to which they are clamped. However, with the extension according to the invention, the clamp can be pushed farther down on the tooth and a clamp with more surface area can come into contact with the tooth. This enhances the engagement of the clamp above the tooth and also reduces the tendency of the clamp to "jump" out of the tooth.

In one embodiment, if it is desired that the clamp block light traveling between adjacent teeth through the clamp, the extension is formed of a light blocking material. With such a clamp, light cannot pass between adjacent teeth except through wedges.

[0021] In another embodiment, the extension comprises a light transmitting material. Preferably, a light transmitting substance is bonded to the arm of the clamp. A clamp having a light transmitting extension allows light to pass between adjacent teeth through both the wedge and the clamp.

According to another broad aspect of the invention, the dental filling resin material is made of a material that is impermeable to the photocurable material, and is formed from a first end to an opposite end by being particularly tapered. A dental wedge including an elongated body having a side surface and a generally triangular cross-section, wherein the first end has a convex curved surface such that light directed to the end is opposite the first end. And a pair of arms extending in one plane, each branch having a branch that hangs down from the plane of the arm. A dental matrix combination having a distal end extending off and a dental retaining clamp formed to have a notch on the distal end sized to fit over a portion of the dental wedge. A retainer is provided.

According to another broad aspect of the invention, removing a portion of a tooth to form a cavity;
A dental matrix for insertion between adjacent surfaces of two teeth, said dental matrix comprising a sheet of a material permeable to curing light of a dental resin filler, wherein said sheet Has a first side surface and a second side surface, and the sheet has a thickness selected between the first side surface and the second side surface so as to withstand a force received by insertion between adjacent surfaces. The sheet further has an edge portion that comes into contact with the gingiva, and a thin portion provided on the sheet such that a concave portion is formed on the surface of the sheet, wherein the thin portion comes into contact with the gingiva. A tooth matrix as a mold of a dental filling resin material, wherein the sheet is spaced from the edge by a predetermined distance and the thickness of the sheet around the thin portion is greater than the thickness of the material of the thin portion. Contacting the Inserting a light transmissive dental wedge between the ricks and adjacent teeth, clamping a dental clamp on the matrix, and positioning the dental clamp in the cavity to abut the matrix. A method is provided for providing dental treatment to a tooth, comprising: introducing a resin filling material; and applying an amount of curing light to cure the dental resin filling material through the wedge.

Hereinafter, the present invention will be described in detail with reference to examples shown in the drawings, but the present invention is not limited to these examples.

DETAILED DESCRIPTION OF THE INVENTION Referring to FIGS . 1a-1c, a matrix 10 according to the present invention is illustrated. The matrix 10 is made of an acrylic resin or a thermoplastic resin, which material is transparent to light used to cure the composite resin interproximal filler, has two sides 12a, 12b and a predetermined contour. And an edge 14 having The side surface 12b is a side surface of the matrix. The side surface 12b is disposed adjacent to the tooth on which a predetermined treatment has been performed, and a resin is disposed opposite the side surface 12b. Hereinafter, the side surface 12b is referred to as a resin contact side surface. In the matrix 10, the edges 14
a has a shape that matches the contour of the gingival margin between adjacent teeth. For more information,
The gingival contacting edge 14a is curved inward toward the center of the matrix.

The matrix 10 is formed with a portion 16 having a thickness tw that is smaller than the thickness tm of the other portions, thus forming a recess on the resin contact side surface 12b of the matrix. The thickness of the non-recessed portions of the matrix is selected to be suitable for loading between adjacent teeth and to be rigid enough to be loaded without damaging adjacent teeth. . More specifically, the thickness tm of the matrix portion 10 other than the concave portion 16 is about 0.05 to 0.15 mm, preferably 0.1 mm. For this recess 16 a smaller thickness is chosen so that a filling material is introduced between adjacent teeth and an enlarged portion is formed in the contact area when the filler cures, leaving only a small space between adjacent teeth. You. This prevents unhealthy and unpleasant spaces from forming between adjacent teeth. The thickness of the thin portion of the concave portion is selected as thin as possible in consideration of the characteristics of the material of the matrix, so as to prevent damage by resin applied to the thin portion. More specifically, the thin portion 16 of the recess is preferably about 0.03
Preferably, it is selected to have a thickness tw of ０．０0.07 mm, most preferably 0.05 mm. To ensure that the portion 16 is correctly positioned when the matrix is inserted, this portion is spaced from the rim 14a by a distance corresponding to the spacing between the average tooth gingiva and the point of contact of the tooth. More specifically, the recessed portion is spaced from edge 14a by about 1.0-5.0 mm. Preferably, the area of the thin portion of the recess is enlarged to accommodate some variation in the distance from the gum to the point of contact of the tooth. The height of the thin part is in the range of 2 to 4 mm, and the width is in the range of about 2 to 4 mm. The matrix according to the invention can be manufactured to have various sizes, for example to accommodate both children's teeth or adult teeth, where adult teeth generally have more gingival and contact points than children's teeth. The interval is large.

Although the thin portion 16 is shown as being rectangular, it is clear that this portion can take other shapes, such as circular or oval. Further, the thinned portion 16 can be defined by smooth rounded steps as shown, or can be defined by further reducing the thickness of the matrix.

The matrix 10 is preferably curved so as to form a generally concave shape (FIGS. 1b, 1c), and a recess consisting of a thin part is arranged on its concave side. Such a curved shape allows the matrix to follow the curvature of the side and neck of its inserted adjacent teeth. Also, the adhesive 18 can be applied to the side edges of the matrix to attach the matrix around the teeth where the matrix abuts. The adhesive is suitable for adhering the matrix to the tooth surface, but allows the matrix to be detached or peeled from the tooth surface if desired.

Referring to FIGS. 2A-2D, a wedge 20 according to the present invention is illustrated.
The wedge 20 tapers along its length from its first end 22 to its second end 24. The wedge 20 is formed to have three side surfaces 26a, 26b, 26c, and thus has a triangular cross section. These side surfaces 26a, 26b
, 26c are selected such that the wedge can fit between the two teeth. Preferably, these side surfaces 26a-26c are slightly concave to facilitate insertion between teeth. The wedge is preferably curved along its length to match the curvature of the teeth in the interproximal area.

Wedges are formed of a material that is permeable to light used to cure the resin interdental filler and are formed to enhance light transmission to adjacent interdental areas over prior art wedges. Have been. More specifically, since the first end 22 of the wedge 20 is formed in a lens shape having a convex curved surface, light entering the wedge through this end 22 is refracted through the focal point 38 and proceeds toward the side surface of the wedge. Distal end 22 is larger than the cross section defined by sides 26a, 26b, 26c. If desired, the underside of the distal portion 22 can be rounded or flattened to avoid damage to the patient's gums during use.

A groove area 28 is formed along a part of the two side surfaces 26a, 26b. Each groove section 28 includes a plurality of grooves 30 selected to refract and reflect light impinging thereon laterally outward from the wedge. Each of these grooves 30 has a first slope 32 and a second slope 34, and extends perpendicularly to the center line 20a between both ends 22 and 24 of the wedge. The slopes 32, 34 are inclined into the wedge at an angle such that light passing through the wedge is refracted outward when striking these slopes. The angle at which these slopes slope inward relative to the wedge sides is selected taking into account the angle at which light strikes these slopes due to the curvature of the distal end 22 and the index of refraction of the wedge material. Generally, this slope is about 30 to 6 with respect to the grooved side.
0 °, most preferably selected to be inclined at an angle α in the range of about 45 degrees.

The wedge ends 22 and groove areas 28 cooperate to facilitate light transmission to adjacent interdental areas. Referring to FIG. 2d, when light energy indicated by dash-dot line 36 is emitted from light source 37 toward wedge end 22, this light is refracted to focus 38
To the wedge sides 26a, 26b. Also, the curvature of the end 22 is selected such that refracted light strikes the wedge sides between the ends 22 and 24 of the wedge. As the light strikes the groove area 28, the light is refracted from the ramp 34. This light passes laterally outward from the wedge or is reflected laterally outward from the wedge from the wedge slope 32. As is apparent from the figure, the curvature of the wedge end 22 must be chosen such that the focal point is located within the wedge and the light is directed to an effective position along the side of the wedge.

Although it is possible to provide grooves on all sides of the wedge, preferably only selected areas of one or more selected sides are provided with grooves and light is selectively refracted outward through this area Is preferably performed. More specifically, as shown in FIG. 2B, a groove area extends midway between the ends of the wedge so that light is concentrated in the interdental area.
Preferably, the groove area extends from the center of the lateral width of the wedge toward one edge of the wedge. As a result of such placement of the groove area, when the wedge is positioned between adjacent teeth, the groove area is selectively positioned adjacent the cavity boundary 38 (FIG. 4A) between the filler and the teeth. You. In this manner, light refracted from the wedge is selectively directed laterally outward toward this boundary 38.

The wedge end 24 must be dull so that light directed from the outside of the wedge toward the end 24 is not reflected, but is introduced into and passed through the wedge. Also preferably, the distal end 24 is a tip 2 that facilitates insertion of the wedge 20 between teeth.
Must be tilted to form teeth 24a. Also, the distal end 24 can be narrowed, if desired, to facilitate it between teeth.

Instead of the groove area, other forms of rough surface can be used, which can be used on various surfaces of the wedge. As an example, a rough surface can be used for the sides 16a and 26b rather than a groove to smooth the other sides of the wedge, including the end 22 and the side 26c. In another embodiment, not shown, the rough surface can be formed by electro-mechanical discharge (EDM) finishing of the wedge mold surface. This forms a surface consisting of random peaks and valleys on the wedge outer surface. The roughening is selected to an appropriate degree to refract light outward from the wedge interior.

FIGS. 3A-3C show a clamp 50 used to hold the matrix and wedge simultaneously in place. Clamp 50 is generally circular or U-shaped in a plane (FIG. 3A) and has a pair of arms 52 extending in one plane. These arms 52 are tensioned and require a constant force to pull them apart. Each arm 52 has a tooth engaging surface 54 thereon. These surfaces 54 are formed by branches 56 hanging off the plane of the arms.
The branch 56 has a length that extends along at least a portion of the tooth with which it is engaged. The branch 56 branches off at its ends into two extensions 57. The projection 57 defines notches 58a, 58b therebetween. Since the notch is formed in a V-shape, it fits over the wedge as shown in FIG. 2A. Notches 58a, 5
Since 8b is positioned over the wedge, clamp 50 is properly positioned over the teeth from top to bottom to prevent "jumping." As shown, notches 58a, 58b
Is preferably formed so that the notch 58a starts to correspond to the tapered size of the wedge at a point away from the arm 52. To facilitate the use of a clamp having such a notch, a right hand clamp and a left hand clamp are provided.

The clamp 50 is preferably formed from a material such as stainless steel that is impermeable to curing light. In this way, when the curing light is directed from the side of the tooth specimen, the curing light is shielded from the top of the tooth specimen by the projections 57 of the branches 56 and is preferably directed through the wedge.

If it is desired to visually inspect through the clamp (ie, to verify that the side portions of the cavity are properly filled), a portion of the clamp is formed of light transmissive material. You. Referring to FIG. 3d, a clamp 50 'with an extension 57' of light transmissive material is shown. Clamp 50 ′ includes an arm 52, which includes a small post 56 extending from arm 52.
Having. A light transmissive portion 60 is connected to each post 56 '. Light transmissive portion 60 includes an integrally formed extension portion 57 '.

While the matrix 10, wedge 20 or 20 'and clamp 50 or 50' described above can be used separately from each other with prior art devices, in a preferred embodiment the matrix, wedge and clamp of the present invention are used. Used integrally for loading tooth fillings. This is effective and a reliable contact can be made in the contact area 61 between the loaded filler and the tooth specimen, thus forming a well-sealed boundary 38. 4A and 4B illustrate a treatment procedure performed on a tooth 62 using a matrix 10, wedge 20 and clamp 50. FIG. The teeth 62 have been partially removed from their crowns to form cavities for receiving a certain amount of dental filler 67 such as a light-cured composite resin.

A matrix 10 is inserted between the teeth 62, 64, and the matrix 10
Acting as a mold around 6, the matrix can be loaded with filler. The side surface 12b of the matrix is located adjacent to the teeth 62. Wedge 2
0 is inserted into the crown and extends into the interproximal zone. The end 22 is exposed and light concentrates on this end. The wedges 20 press the matrix 10 into intimate contact with the teeth 62 and serve to introduce light between adjacent teeth.

To hold the top of the matrix 10 against the teeth 62, the clamp 50
And around the matrix 10. Clamp 50 on teeth and matrix
A device is used to separate the arms 52 of the clamp from each other and to push down the extensions 57 of the branches 56 to both sides of the teeth. When the branch 56 is installed, it contacts both teeth 62, 64 and shields the interproximal area therebetween. Notch 58 fits over the top of wedge 20.

In this way, the matrix 10 is fixedly held to the teeth 62, and the composite resin 67 can be introduced into the cavity 66. Focused light is directed to the distal end 22 of the wedge 10 to cure the resin material. Light is conducted through the wedge and is refracted and reflected laterally outward from the wedge by the wedge grooves. Extension part 5 of clamp 50
The presence of 7 and the arrangement of the groove areas on the wedge prevents light from hardening the upper part of the tooth specimen.

The present invention is not limited only to the above description, and can be arbitrarily changed within the scope of the invention.

[Brief description of the drawings]

FIG. 1A is a side view of a dental matrix according to the present invention;

FIG. 1B is a sectional view taken along line BB of FIG. 1A.

FIG. 1C is a sectional view taken along line CC of FIG. 1A.

FIG. 2A is a side view of a dental wedge according to the present invention.

FIG. 2B is a plan view of the dental wedge of FIG. 2A.

FIG. 2C is a side view of a portion of a dental wedge according to the present invention along the length, showing details of the grooves.

FIG. 2D is a plan view of a dental wedge having a distally directed convergent light source.

FIG. 3A is a plan view of a clamp according to the present invention.

FIG. 3B is a side view of the clamp of FIG. 3A.

FIG. 3C is a side view of the clamp of FIG. 3A.

FIG. 3D is a side view of a clamp according to another aspect of the present invention.

FIG. 4A is a side view showing a matrix band of the present invention and a wedge positioned for treatment between two teeth.

FIG. 4B is a side view showing the function of a clamp for holding a matrix.

──────────────────────────────────────────────────続 き Continuation of front page (81) Designated country EP (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE ), OA (BF, BJ, CF, CG, CI, CM, GA, GN, GW, ML, MR, NE, SN, TD, TG), AP (GH, GM, KE, LS, MW, SD, SZ, UG, ZW), EA (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM), AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, HR, HU, ID, IL, IS, JP, KE, KG, KP , KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, US, UZ, VN, YU, ZW (72) Inventor Anthony, M. Hague Alberta, Canada, Canmore, Larch, Place, 803 F-term (reference) 4C052 HH07 4C059 RR19

Claims (27)

[Claims] 1. A dental wedge made of a material permeable to curing light of a dental resin filling material, having a side surface and tapering from a first end to an opposite end. Wherein the light directed to the first end is refracted into the wedge and passes through the wedge between the first end and the opposite end. To face the side,
A dental wedge, wherein the first end has a convex curved surface. 2. The dental wedge of claim 1, wherein the first end of the wedge is wider than the cross-section of the wedge between the side surfaces having the largest cross-sectional area. . 3. The dental wedge of claim 1, wherein the opposite end of the wedge has a flat surface separate from the sides of the wedge. 4. An elongated body of a wedge having an outer surface, at least a portion of said outer surface being rough, and allowing light passing through the wedge to traverse the wedge from the outer surface of the wedge. The dental wedge of claim 1, wherein the wedge is adapted to bend in a direction outward of the wedge. 5. The rough surface of the outer surface is formed to have a surface state similar to a surface state formed by electric discharge machining, and the rough surface traverses light passing through the wedge. The dental wedge of claim 4, wherein the wedge is refracted in a direction toward the outside of the wedge. 6. The roughened outer surface is formed by providing a surface groove extending vertically between the first end and the opposite end on at least one of the sides of a wedge. 5. The dental wedge of claim 4, wherein the surface groove refracts light passing through the wedge by the rough surface from the wedge toward the outside of the wedge in a direction transverse to the wedge. 7. The dental wedge of claim 6, comprising a plurality of surface grooves extending along at least one of said side surfaces. 8. Each surface groove is formed by a first inclined surface and a second inclined surface which are concentrated at the bottom of the groove, and the first inclined surface and the second inclined surface are formed by these inclined surfaces. A dental wedge according to claim 6 or claim 7, wherein the wedge is at an angle of about 30 to 60 with respect to the side surface. 9. A dental wedge made of a material permeable to curing light of a dental resin filling material, having a side surface and tapering from a first end to an opposite end. Wherein the light directed to the first end refracts into the wedge and passes through the wedge between the first end and the opposite end. A dental wedge having a convex curved surface at the first end so as to face the side surface; and a clamp having a pair of arms extending on a predetermined surface, wherein each arm has a branch portion. A notch sized for each branch to have a distal end extending out of the plane from which the arm extends, and for each branch to fit a portion of the dental wedge at the distal end. Having a clamp, and a tooth The combination holder for use matrix. 10. The dental matrix of claim 9, wherein the notch is shaped to match the shape of a selected portion of the dental wedge into which the notch fits. Combination holder. 11. The dental dent according to claim 9, wherein the first end of the dental wedge is wider than a cross-section having the largest cross-sectional area of the cross-section of the wedge between the side surfaces. Combination holder for the application matrix. 12. The dental matrix combination holder according to claim 9, wherein the opposite end of the dental wedge has a flat surface separate from the side of the wedge. 13. The dental wedge has an elongate body having an outer surface, at least a portion of the outer surface is roughened, and light passing through the dental wedge is transmitted to the dental wedge. The combination holder for a dental matrix according to claim 9, wherein the holder is adapted to bend from an outer surface of the dental wedge toward an outside of the dental wedge in a direction crossing the dental wedge. . 14. The rough surface of the outer surface is formed so as to have a surface state similar to a surface state formed by electric discharge machining, and the rough surface transmits light passing through the dental wedge. 14. A dental matrix combination holder according to claim 13, characterized in that it is deflected from the dental wedge towards the outside of the dental wedge in a direction transverse to the dental wedge. 15. The rough surface of the outer surface is formed by providing a surface groove extending vertically between the first end and the opposite end on at least one of the side surfaces of the dental wedge. Wherein the surface groove refracts the light passing through the dental wedge from the dental wedge toward the outside of the dental wedge in a direction transverse to the dental wedge. 14. The combination holder for a dental matrix according to claim 13, wherein: 16. The combination holder for a dental matrix according to claim 15, having a plurality of surface grooves extending along at least one of said side surfaces. 17. Each of the surface grooves is formed by a first inclined surface and a second inclined surface that are concentrated at the groove bottom, and the first inclined surface and the second inclined surface are formed by these inclined surfaces. 16. An angle of about 30-60 [deg.] With respect to the defined side surface.
7. A combination holder for a dental matrix according to item 6. 18. A dental matrix for insertion between adjacent surfaces of two teeth, comprising a sheet of a material permeable to curing light of a dental resin filler, said sheet comprising a first side. And a second side surface, wherein the sheet has a thickness selected between the first side surface and the second side surface so as to withstand the force received by the insertion between the adjacent surfaces. An edge that contacts the gingiva, and a thin portion provided on the sheet such that a concave portion is formed on the surface of the sheet, wherein the thin portion extends from the edge that contacts the gingiva. A dental matrix, separated by a predetermined distance, wherein the thickness of the sheet around the thin portion is greater than the thickness of the material in the thin portion. 19. The gingival edge of claim 18, wherein the thin portion is spaced from the gingival contact edge to allow for a known spacing from the gingiva to the point of contact of the tooth on average. Dental matrix. 20. The gingival contact edge of the sheet is curved inward,
19. The dental matrix according to claim 18. 21. The sheet of claim 18, wherein one side of the sheet has a generally concave shape, and the recess is located on the concave side of the sheet. The dental matrix as described. 22. An adhesive is attached to the concave side surface of the sheet,
19. The dental matrix according to claim 18. 23. A dental matrix for removing a portion of a tooth to form a cavity, and inserting the dental matrix between adjacent surfaces of two teeth, the dental matrix comprising a dental resin filler. A sheet made of a material permeable to curing light, the sheet having a first side surface and a second side surface, and the sheet withstands a force received by being inserted between adjacent surfaces. The thickness between the first side surface and the second side surface is selected, and the sheet is provided on the sheet such that an edge portion that contacts the gingiva and a concave portion is formed on the surface of the sheet. A thinner portion, wherein the thinner portion is separated from the gingival contact edge by a predetermined distance, and the thickness of the sheet around the thinner portion is the material of the thinner portion. Dental matrix that is greater than the thickness of Abutting the teeth as a mold of a dental filling resin material; inserting a light transmissive dental wedge between the matrix and adjacent teeth; and clamping a dental clamp on the matrix. Introducing a dental resin filling material into the cavity so as to abut the matrix; and applying a curing light in an amount for curing the dental resin filling material through the wedge. A method of applying dental treatment to teeth, which is a feature. 24. A dental holding clamp for simultaneously clamping a dental matrix and a dental wedge from above, comprising a pair of arms extending on a predetermined surface, wherein each arm has a branch. Wherein each branch has a distal end extending out of the plane from which the arm extends,
And the distal end is bifurcated into two extensions, wherein a notch sized to fit a portion of the dental wedge is formed between the two extensions. Clamp. 25. The dental holding clamp according to claim 24, wherein the notch is shaped to match the shape of a selected portion of the dental wedge into which the notch fits. . 26. The dental holding clamp according to claim 24, wherein the extension is made of a material permeable to curing light of the dental resin filler. 27. The method according to claim 24, wherein at least a part of the branch portion and the extension portion have protrusions made of a material permeable to curing light of the dental resin filler. Dental holding clamp.