JP5322221B2 - Crown restoration material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a crown restoration member for efficiently using a pulled tooth which is usually disposed and preferably restoring the crown part by using the pulled tooth or a material similar to the pulled tooth. <P>SOLUTION: The crown restoration member 10 is used for binding a natural tooth, and has a surface layer 11 of adamantin and an inner layer 13 of dentin laminated on the inner surface of the surface layer. The crown restoration member 10 further has a resin layer 15 covering the surface where the inner surface is released. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a crown restoration member using a extracted tooth or a material similar to an extracted tooth that can suitably perform restoration of a crown portion.

  Not every person has all four wisdom teeth, but most people have it. However, there are many examples of wisdom teeth that grow in a narrow space portion of the jaw, and there is a problem that the tooth arrangement is deteriorated, further, it is easy to induce inflammation of cavities and gingiva, and trouble is easily caused in the oral cavity. The troubled wisdom tooth may be treated, but it is often extracted because the trouble is likely to recur. Further, in orthodontic treatment, premolars and the like may be removed.

  Such extracted teeth have normally been disposed of in the past, but in Patent Document 1, the extracted teeth are pulverized suitable for regeneration of alveolar bone by pulverizing the extracted teeth together with physiological ice pieces. An adjustment method for providing a product is disclosed.

JP 2007-222811 A

  The extracted tooth, when viewed as a material, is made of hard enamel and has a slightly soft dentin on the surface, with excellent mechanical strength, corrosion resistance, durability and aesthetics. As a suitable material. However, there is no prior art that discloses restoration of the crown portion using the extracted tooth or a material similar to the extracted tooth.

  From this point of view, the present invention aims at effective use of the extracted tooth that has been conventionally discarded, and can perform restoration of the crown portion suitably using the extracted tooth or a material similar to the extracted tooth. An object is to provide a member.

The crown restoration member according to the present invention is a crown restoration member for natural tooth bonding, and has a surface layer made of enamel and an inner layer made of dentin laminated on the inner surface of the surface layer. . Moreover, prosthetic restorations member according to the present invention, furthermore, can be made to have a resin layer covering the opened surface of the inner layer.

In the said invention, it is good for the outer edge of the natural-tooth joint surface where a natural tooth is joined to be a flat shape. And it can have a recessed part which fits in a natural tooth in a natural tooth joint surface. Moreover, it can have a convex part which fits into a natural tooth in a natural tooth joint surface. Furthermore, the crown restoration member according to the present invention can be used even if the mating partner is an implant by providing a recess that fits into the abutment of the implant.

  The method for manufacturing a crown restoration member for natural tooth bonding according to the present invention includes a step of alternately cleaning a extracted tooth or a sintered product similar to the extracted tooth with a hydrogen peroxide solution and a sodium hypochlorite solution. A process of sterilizing the extracted tooth or the extracted tooth-like baked product with heated steam, a process step of performing a planar process on the root side end portion of the sterilized extracted tooth or the extracted tooth-like baked product, and plane processing. And a step of forming a recess from the surface to the dentin, and a step of coating the resin on the open surface of the extracted tooth or the dentin of the burned product similar to the extracted tooth after processing. Can do.

  The crown restoration member according to the present invention is excellent in mechanical strength, corrosion resistance, durability and aesthetics.

It is a mimetic diagram showing the section of the crown restoration member concerning the present invention. It is a schematic diagram of the example whose shape differs from the crown restoration | repair member of FIG. It is a schematic diagram of the natural tooth in which a crown part is restored. It is a schematic diagram which shows the cross section of another Example. It is a schematic diagram which shows another Example.

  Hereinafter, embodiments for carrying out the invention will be described with reference to the drawings. FIG. 1 is a schematic view showing a cross section of one embodiment of a crown restoration member according to the present invention. As shown in FIG. 1, the present crown restoration member 10 is a crown restoration member joined to a natural tooth 30, and includes a surface layer 11 made of enamel and a dentin laminated on the inner surface of the surface layer 11. And an inner layer 13.

The crown restoration member 10 only needs to have the surface layer 11 made of enamel and the inner layer 13 made of dentin. For this reason, the extraction tooth | gear derived from such a tooth | gear is sufficient even if it is a human tooth and an animal tooth | gear. Moreover, what was produced by baking using the raw material similar to such an extraction tooth , ie, the baking goods similar to an extraction tooth, may be sufficient.

  The shape of the crown restoration member 10 is not particularly limited. For example, the shape shown in FIG. 1 or the shape shown in FIG. 2 may be used. The crown restoration member 10 shown in FIG. 2 has a surface layer 11 and an inner layer 13, and a resin layer 15 described below in a part of the dentin that forms the inner layer 13. Similar, but shaped to be a portion of the crown restoration member 10 shown in FIG.

  Further, the shape of the natural tooth 30 to which the crown restoration member 10 is joined is not particularly limited. The shape shown in FIG. 3 (FIG. 1) can be used, and other shapes can be used.

  The shapes of the crown restoration member 10 and the natural tooth 30 preferably have an uneven portion for fitting in order to join at least both. For example, as shown in FIG. 1, a recess 18 is provided in the crown restoration member 10 so that the projection 35 (FIG. 3) provided in the natural tooth 30 fits into the recess 18 of the crown restoration member 10. it can. The convex portion 35 may be formed by processing the natural tooth 30 itself, or may be formed by processing a metal.

  Further, the crown restoration member 10 may have a flat outer edge 16, and the natural tooth 30 may have a flat portion 36 facing the outer edge 16. Thereby, the crown restoration member 10 and the natural tooth 30 can be firmly joined. Moreover, the problem that the edge of the dental crown restoration member 10 is easily broken can be solved, and the sealing process described below can be facilitated.

  As shown in FIG. 1 or FIG. 2, in the crown restoration member 10, an open surface of the inner layer 13 (a portion not covered with the surface layer 11) may be covered with a resin layer 15. As a result, the inner layer 13 made of dentin can be sealed, and joining with the natural teeth 30 can be facilitated. The sealing treatment can prevent corrosion of the crown restoration member 10, propagation of bacteria, and the like, and can improve durability. The resin layer 15 can be formed using a known dental dentin adhesive.

  The crown restoration member 10 according to the present invention can be manufactured by the following method. That is, a process of alternately washing extracted teeth or similar to extracted teeth with hydrogen peroxide and sodium hypochlorite water, and sterilizing alternately extracted teeth or similar to extracted teeth with heated steam A process for performing planar processing of the root side end portion of the sterilized extracted tooth or a baked product similar to the extracted tooth, and a processing process for forming a recess from the plane processed surface toward the dentin, The crown restoration member 10 can be manufactured by coating the resin on the open surface of the dentin of the extracted tooth that has been processed or similar to the extracted tooth.

  In the manufacturing method described above, the step of alternately washing the extracted tooth or the extracted tooth-like baked product with hydrogen peroxide water and sodium hypochlorite water is for cleaning and removing corrosive substances such as pulp and congested substances. To be done. The extracted teeth that have been alternately washed or the baked products similar to the extracted teeth are sterilized with heated steam. This sterilization process can be performed, for example, by using an autoclave and performing a heat treatment for 20 minutes with 121 ° C., 2 atm superheated steam.

  Next, in the sterilized extracted tooth or the sintered product similar to the extracted tooth, the root side end portion to be a portion to be joined to the natural tooth 30 is processed into a plane. Planar processing refers to processing so that the crown restoration member 10 has a flat outer edge 16 as shown in FIG.

  Next, a process of forming the recesses 18 from the plane-processed surface toward the dentin is performed. It is preferable that the recess 18 has a shape generally used in dental treatment. Therefore, the recess 18 can be formed using a known composite resin so as to have a predetermined shape.

  In the extracted tooth or the burned product similar to the extracted tooth after processing, the resin is coated on the part of the dentin that is the open surface. The coating can be performed using a known dental dentin adhesive.

  The crown restoration member 10 has been described above. The crown restoration member according to the present invention is not limited to the above embodiment. For example, the following crown restoration member may be used. That is, as shown in FIG. 4, the crown restoration member 10 has a surface layer 11, an inner layer 13, and a resin layer 15, and may have a configuration in which a column 20 is provided at a portion joined to the natural tooth 30. . Note that the support column 20 fits into a recess provided in the natural tooth 30.

  When the crown restoration member 10 has a shape as shown in FIG. 2, the restoration as shown in FIG. 5 can be performed. That is, by using the present crown restoration member 10, it is possible to restore the natural tooth 30 in which a part of the crown has been lost due to touch or the like.

  The crown restoration member 10 and the natural tooth 30 can be joined by a known method. For bonding, a known adhesive resin cement can be used, and the crown restoration member 10 and the natural tooth 30 can be bonded after a metal such as a gold foil is sandwiched between the bonding surfaces.

  As described above, the crown restoration member according to the present invention can perform various restorations of the crown portion of natural teeth, and can perform restorations excellent in mechanical strength, corrosion resistance, durability, and aesthetics. it can. The restoration of the crown portion by the crown restoration member according to the present invention can be performed not only on natural teeth but also on implants. In other words, by providing the natural tooth joint surface of the crown restoration member with a recess that fits into the abutment of the implant, the crown restoration member can be suitably used for an implant.

10 Crown restoration material
11 Surface
13 Inner layer
15 Resin layer
16 outer edge
18 recess
20 props
30 natural teeth
35 Convex
36 Plane section

Claims (7)

A crown restoration member for natural tooth bonding, comprising a surface layer made of enamel and an inner layer made of dentin laminated on the inner surface of the surface layer. The crown restoration member according to claim 1, wherein an outer edge of a natural tooth joint surface to which the natural tooth is joined has a flat shape. Natural tooth bonding surface, a prosthetic restoration member according to claim 1 or 2, characterized in that a recess which fits to the natural teeth. Natural tooth bonding surface, a prosthetic restoration member according to claim 1 or 2, characterized in that it has a convex portion fitted into a natural tooth. Natural tooth bonding surface, a prosthetic restoration member according to claim 1 or 2, characterized in that a recess which fits the abutment of the implant. The crown restoration member according to any one of claims 1 to 5 , wherein the crown restoration member has a resin layer that covers an open surface of the inner layer. A step of alternately washing the extracted tooth or the extracted tooth-like baked product with hydrogen peroxide water and sodium hypochlorite water;
A process of sterilizing alternately-extracted extracted teeth or extracted tooth-like baked products with heated steam;
A processing step of performing flattening of the root side end portion of the sterilized extracted tooth or a baked product similar to the extracted tooth;
A processing step of forming a recess from the plane processed surface toward the dentin;
Coating the resin on the dentin open surface of the extracted tooth or burned product similar to the extracted tooth after processing, and a method for producing a crown restoration member for natural tooth bonding,
The said crown restoration member is a manufacturing method of the crown restoration member for natural tooth joining which has the surface layer which consists of enamel, and the inner layer which consists of dentin laminated | stacked on the inner surface of this surface layer.

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