JP5170532B2 - Wax denture - Google Patents

Description

  The present invention relates to a wax denture in which a plurality of artificial teeth are fixed in a predetermined arrangement to a gypsum model through a gingival part made of wax.

  A wax denture is shown in FIG. This wax denture is manufactured by fixing a plurality of artificial teeth 93 to a plaster model 91 in a predetermined arrangement with a gingival portion 92 of wax. The plaster model 91 to which the gingival part 92 is fixed is formed in the shape of the patient's denture mounting part. For this reason, a plate denture manufactured by replacing the gingival part 92 with a gingival part such as plastic or alloy from wax is formed into a shape in which the gingival part such as plastic matches the attachment part of the patient. For gingiva parts such as plastics, wax dentures are buried in the plaster mold, heated in a state where the plaster is cured to remove the wax in the gingival parts, and then the plastic of the denture base material in the voids from which the wax has been removed It is manufactured by filling gingival molding materials such as metal and alloys.

Since the wax denture having this structure is manufactured by fixing a plurality of artificial teeth in a predetermined arrangement at the gingival portion of the wax on the gypsum model, it takes much labor to manufacture. In order to eliminate this drawback, a wax denture shown in FIG. 2 has been developed. (See Patent Document 1)
JP 2003-310642 A

  Patent Document 1 describes a wax denture shown in FIG. This wax denture is formed of a strip-shaped wax piece having a rugged gingival edge 84A along the cervical line 83A of the artificial tooth 83 on the surface of the gingival part 82 fixed to the plaster model 81, and having a certain thickness. The auxiliary cover material 84 is adhered. This wax denture is manufactured by attaching the auxiliary cover material 84 to both the outside and inside of the gingival part 82 and shaping the gingival part 82. Since the auxiliary cover member 84 is formed in advance so as to follow the plurality of artificial teeth 83, it can be attached with wax to shape the gingival part 82 efficiently. For this reason, a wax denture can be manufactured efficiently in a short time.

  However, the wax denture of FIG. 2 has a defect that the gingiva part 82 made of hardened wax is easily broken in the process of manufacturing a denture by replacing the gingival part 82 of wax with a gingival molding material such as plastic. In addition, there is a drawback that it takes time to attach the auxiliary cover member 84 to the gingival portion having a different shape depending on the patient. This is because the auxiliary cover member 84 cannot be deformed and fit along the surface of the gingival part having a different radius of curvature depending on the patient.

  The present invention was developed to solve this drawback, and the first object of the present invention is to prevent the gingival portion from being cracked with an auxiliary cover material while the gingival portion of the wax is made of plastic or alloy. An object of the present invention is to provide a wax denture that can be replaced with a gingival molding material.

  Furthermore, the wax denture of Patent Document 1 uses the auxiliary cover material as a wax and adheres it to the gingival part, and the wax of the auxiliary cover material is removed by heating and melting together with the gingival part. Therefore, the auxiliary cover material can be used repeatedly. There was a drawback that the manufacturing cost of wax dentures was high.

  The second object of the present invention is to provide a wax denture that can reduce the manufacturing cost while efficiently producing a wax denture in a short time by repeatedly using an auxiliary cover material.

The wax denture of the present invention has the following configuration in order to achieve the above-described object.
The wax denture according to claim 1 of the present invention is attached to a plurality of artificial teeth 3, a gingival part 2 made of wax for arranging the plurality of artificial teeth 3 on the gypsum model 1 in a predetermined arrangement, and the surface of the gingival part 2. And an auxiliary cover member 4 formed. In this wax denture, the auxiliary cover material 4 is a room temperature flexible material obtained by adding a plastic having flexibility at room temperature to wax.

  In the wax denture according to claim 2 of the present invention, the auxiliary cover material 4 is obtained by adding a thermoplastic resin to the wax.

  In the wax denture according to claim 3 of the present invention, the auxiliary cover material 4 is made by adding a plastic made of any one of polyethylene resin, polypropylene resin, urethane resin, silicon resin, polyethylene resin, and soft vinyl chloride resin to the wax.

  The wax denture according to claim 4 of the present invention is attached to a plurality of artificial teeth 3, a gingival part 2 made of wax for arranging the plurality of artificial teeth 3 on the gypsum model 1 in a predetermined arrangement, and the surface of the gingival part 2. And an auxiliary cover member 4 formed. In this wax denture, the auxiliary cover material 4 is a rubber-like elastic body having flexibility at room temperature.

  In the wax denture according to claim 5 of the present invention, the auxiliary cover material 4 is any one of silicon resin, urethane resin, soft vinyl chloride resin, EVA, natural rubber, and synthetic rubber.

  In the wax denture according to claim 6 of the present invention, the auxiliary cover material 4 is attached to the outer surface and the inner surface of the artificial tooth 3 and the gingival part 2.

  In the wax denture according to claim 7 of the present invention, the auxiliary cover material 4 is formed into an uneven gingival margin 4 </ b> A along the cervical line 3 </ b> A of the artificial tooth 3.

  The wax denture of the present invention is characterized in that the gingival portion of the wax can be replaced with a gingival molding material such as plastic while preventing the gingival portion from cracking with the auxiliary cover material. The wax denture of the present invention has an auxiliary cover material attached to the surface of the gingival part and the artificial tooth, and the auxiliary cover material is formed by adding a plastic having flexibility at normal temperature to wax. This is because it is made of an elastic material or a rubber-like elastic body having flexibility at room temperature. The gingiva part, which is formed by attaching an auxiliary cover material made of room temperature flexible material or rubber-like elastic material to the surface, is reinforced by the flexible material auxiliary cover material at room temperature, and cracking of the gingival part is effective To be prevented. In addition, the auxiliary cover material made of room temperature flexible material or rubber-like elastic body can be freely deformed along the surface of the gingiva part that is molded into various shapes according to the patient, easily and easily and efficiently Realizes the ability to manufacture wax dentures in a short time by attaching to the surface of the gingival part.

  Furthermore, the wax denture according to claim 4 of the present invention is characterized in that the manufacturing cost can be reduced while the wax denture is efficiently manufactured in a short time by repeatedly using the auxiliary cover material. This is because the auxiliary cover material is a rubber-like elastic body having flexibility at room temperature. This auxiliary cover material can be freely deformed and easily attached to the surface of the gingival part of various shapes, while producing a plaster negative mold that molds the gingival part of plastic, alloy, etc., and then opening the negative mold By removing it, it can be reused over and over again.

  Furthermore, the wax denture according to claim 6 of the present invention can attach the auxiliary cover material to the outer surface and the inner surface of the artificial tooth and the gingival part and reinforce both sides of the gingival part with the auxiliary cover material. Cracks can be prevented more reliably.

  Furthermore, in the wax denture according to claim 7 of the present invention, the auxiliary cover material is formed into an uneven gingival margin along the cervical line of the artificial tooth, so that it adheres to the gingival part and shapes the upper edge thereof. It is possible to adhere to the gingival part while simplifying.

  Embodiments of the present invention will be described below with reference to the drawings. However, the Example shown below illustrates the wax denture for materializing the technical idea of this invention, and this invention does not specify a wax denture to the following.

  Further, in this specification, in order to facilitate understanding of the scope of claims, numbers corresponding to the members shown in the examples are indicated in the “claims” and “means for solving problems” sections. It is added to the members. However, the members shown in the claims are not limited to the members in the embodiments.

  3 and 4 show a wax denture used for manufacturing a lower denture complete denture, and FIGS. 5 and 6 show a wax denture used for manufacturing an upper denture complete denture. However, the present invention is not limited to the use of wax dentures for the production of complete dentures, and can be used for the production of partial dentures. The wax denture shown in the figure includes a plurality of artificial teeth 3, a gingival part 2 made of wax for arranging the plurality of artificial teeth 3 on the plaster model 1 in a predetermined arrangement, and an auxiliary cover attached to the surface of the gingival part 2. Material 4 is provided. The wax denture in the figure has an auxiliary cover material 4 attached to the outer and inner surfaces of the gingival part 2. However, although the wax denture of this invention is not shown in figure, an auxiliary | assistant cover material can also be attached only to either the outer side or inner side of a gingival part.

  The wax denture plaster model 1 is formed into a shape that models the oral condition of a patient. A wax gum part 2 is provided on the plaster model 1. The gingival part 2 of wax is provided so as to cover the upper surface, the outer side, and the inner side of the ridge 5 provided in the gypsum model 1. A plurality of artificial teeth 3 are arranged in a predetermined arrangement on the gingival part 2, and an auxiliary cover material 4 is attached to the surface of the gingival part 2 to fix the artificial tooth 3 to the gingival part 2. The auxiliary cover material 4 uses a metal spatula and is attached to the gingival part 2 with wax melted by heating. The metal spatula is a tool having a metal heating piece at the tip, and the tip is heated with a burner. The metal spatula adheres in a molten state by immersing the tip heated by the burner in wax. A melted wax is filled between the auxiliary cover material 4 and the gingival part 2 and cured. The hardened wax adheres the auxiliary cover material 4 to the surface of the gingival part 2 or the artificial tooth 3 like an adhesive. At this time, the auxiliary cover material 4 is deformed into a shape along the surface of the gingival part 2, the gap between the auxiliary cover material 4 and the gingival part 2 is narrowed, and this narrow gap is filled with molten wax, The auxiliary cover material 4 is attached to the surface of the gingival part 2 or the artificial tooth 3.

  The auxiliary cover material 4 made of a room temperature flexible material in which plastic is added to wax melts a part of the auxiliary cover material 4 with a metal spatula and adheres to the surface of the gingival part 2 or the artificial tooth 3 while shaping. be able to.

  The auxiliary cover material 4 is made of a room temperature flexible material in which a plastic having flexibility at room temperature is added to wax, or a rubber-like elastic body having flexibility at room temperature. The auxiliary cover material 4 made of a room temperature flexible material is made by adding a thermoplastic resin such as polyethylene resin, polypropylene resin, or soft vinyl chloride resin to wax, or by adding silicon resin, urethane resin, or the like having flexibility at room temperature. It is added to the wax. The plastic and the wax are heated to a temperature at which both the plastic and the wax are melted to melt both, and are kneaded and mixed in a molten state. The amount of plastic added is 100 parts by weight with respect to 100 parts by weight of wax. However, the amount of plastic added is, for example, 10 parts by weight or more, preferably 30 parts by weight or more, and more preferably 50 parts by weight or more with respect to 100 parts by weight of wax. This is because when the amount of plastic added is small, sufficient strength cannot be realized in the cured state, and flexibility at room temperature is reduced. Also, if the amount of plastic added is too large, it cannot be heated and smoothly flown out of the plaster mold, so the amount of plastic added is less than 300 parts by weight, for example, preferably 200 parts per 100 parts by weight of wax. The amount is adjusted to be less than parts by weight, more preferably less than 150 parts by weight.

  The auxiliary cover material 4 made of a rubber-like elastic body is manufactured by molding silicon resin, urethane resin, natural rubber, synthetic rubber or the like.

  The auxiliary cover material 4 has a thickness of about 1.5 mm, and has an upper and lower edge (lower edge in FIGS. 5 and 6) in FIG. 3 and FIG. Molded to the gingival margin 4A. The auxiliary cover material 4 can be thickened to firmly reinforce the gingival part 2. However, if the auxiliary cover material is too thick, the gingiva portion cannot be shaped into an ideal shape, and the thickness is preferably 0.5 mm to 3 mm, preferably 1 mm to 2.5 mm.

  The auxiliary cover material 4 attached to both surfaces of the lower jaw and the outer surface of the upper jaw is formed into a belt having a predetermined width extending along the gingival part 2. The belt-like auxiliary cover material 4 is preferably shaped to be attached to the lower edge of the gingival part 2 and the artificial tooth 3 with a width of about 1 cm. However, the width of the auxiliary cover material 4 can be set to, for example, 5 mm to 2 cm. Furthermore, the wax denture of FIG. 3 and FIG. 5 has three auxiliary cover materials 4 arranged in the longitudinal direction and adhered to the surface of the gingival part 2. With this structure, the gap between the adjacent auxiliary cover materials 4 can be adjusted to accurately match the gingival margin 4A to the artificial tooth 3. The wax denture changes the shape and size of the artificial tooth 3 to be used in accordance with the patient, but the divided auxiliary cover material 4 adjusts the interval so that the gingival margin 4A is accurately made into the artificial tooth 3. Can be arranged to match. However, the auxiliary cover material can also be formed into a shape that covers the surfaces of all the artificial teeth 3 arranged side by side.

  Further, as shown in FIGS. 5 and 6, the auxiliary cover material 4 attached to the inner side surface of the upper jaw covers the entire inner surface of the ridge 5 of the plaster model 1, that is, covers the palate of the upper jaw denture. Molded into a shape. This auxiliary cover material 4 is attached to the gingival part 2 and has a feature that a wax denture palate part 6 can be easily formed.

  The auxiliary cover material 4 is formed in a curved shape so as to follow the surface of the gingival part 2. However, since the surface shape of the gingival part 2 is not exactly constant depending on the patient, the surface shape of the gingival part 2 is assumed in consideration of the gingival part 2 of a standard patient. When the auxiliary cover material 4 adheres to the surface of the gingival part 2, it is deformed and attached along the surface of the gingival part 2 of each patient.

The above wax denture is manufactured in the following steps.
(1) Wax is attached to the ridges 5 of the plaster model 1 to form the gingival part 2. The wax is attached to the outer side, the inner side, and the upper surface of the ridge 5 to shape the gingival part 2. Since the gingival part 2 is shaped into a gingival part completed by attaching the auxiliary cover material 4 to the surface, it is not necessary to finish the surface cleanly.
(2) After attaching the artificial tooth 3 to the gingival part 2 with wax, the auxiliary cover material 4 is attached to the surface of the gingival part 2 with molten wax. However, a plurality of artificial teeth 3 are arranged on the gingival part 2, an auxiliary cover material 4 is attached to the surface of the gingival part 2, and the artificial tooth 3 is fixed to the gingival part 2 with wax attaching the auxiliary cover material 4. You can also The auxiliary cover material 4 is attached to the surface of the gingival part 2 or the surfaces of the gingival part 2 and the artificial tooth 3 using the above-described metal spatula and molten wax as an adhesive. In the process of attaching the auxiliary cover material 4, the surface of the gingival part 2 is neatly shaped with a metal spatula.

A wax denture is manufactured by the above process. Using this wax denture, a plate denture is manufactured in the following steps.
(1) The wax denture is embedded in uncured and paste-like gypsum, and the gypsum is cured to produce a negative plaster mold.
(2) The wax and the auxiliary cover material 4 are heated and melted and discharged from the gypsum negative mold. At this time, the wax denture using the rubber-like elastic auxiliary cover material 4 opens the gypsum negative mold, removes the auxiliary cover material 4 from the wax denture, then closes the gypsum negative mold, and the wax gum part 2 is heated and melted and discharged from the gypsum negative mold.
(3) The artificial tooth 3 is fixed in a predetermined arrangement, and the gap formed by removing the gingival part 2 and the auxiliary cover material 4 is filled with plastic used for the denture base material, and the gum is formed with a gingival molding material. Mold the part. As the plastic used for the denture base material, for example, polycarbonate or acrylic resin can be used. The polycarbonate is filled in a plaster mold in a molten state, and then cooled and cured to form a gingival part. Acrylic resin, which is a thermosetting resin, is mixed with a powder and a liquid, and the powder is allowed to stand until it becomes sticky, and then filled into a plaster negative mold. Then, it heat-polymerizes and resin is hardened and a gum part is shape | molded. Furthermore, a gingival part can also be shape | molded by embedding a metal in these plastics.
(4) The plate denture in which the artificial tooth 3 is fixed to the gingival part formed of the gingival molding material is taken out from the gypsum mold.

It is a perspective view which shows an example of a wax denture. It is a disassembled perspective view which shows the conventional wax denture. It is a disassembled perspective view of the wax denture concerning one Example of this invention. It is sectional drawing of the wax denture shown in FIG. It is a disassembled perspective view of the wax denture concerning the other Example of this invention. It is sectional drawing of the wax denture shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Gypsum model 2 ... Gingival part 3 ... Artificial tooth 3A ... Gingival line 4 ... Auxiliary cover material 4A ... Gingival margin 5 ... Convex strip 6 ... Palate part 82 ... Gingival part 83 ... Artificial tooth 83A ... Gingival line 84 ... Auxiliary Cover material 84A ... Gingival margin 91 ... Gypsum model 92 ... Gingival part 93 ... Artificial tooth

Claims (7)

A plurality of artificial teeth (3), a plurality of artificial teeth (3) are attached to the surface of the gingival part (2) and a gingival part (2) made of wax that arranges the plaster model (1) in a predetermined arrangement. A wax denture having an auxiliary cover material (4)
A wax denture, wherein the auxiliary cover material (4) is a room temperature flexible material obtained by adding a plastic having flexibility at room temperature to a wax.   The denture according to claim 1, wherein the auxiliary cover material (4) is obtained by adding a thermoplastic resin to a wax.   The denture according to claim 1, wherein a plastic made of any one of polyethylene resin, polypropylene resin, urethane resin, silicon resin, polyethylene resin and soft vinyl chloride resin is added to the auxiliary cover material (4). . A plurality of artificial teeth (3), a plurality of artificial teeth (3) are attached to the surface of the gingival part (2) and a gingival part (2) made of wax that arranges the plaster model (1) in a predetermined arrangement. A wax denture having an auxiliary cover material (4)
A wax denture characterized in that the auxiliary cover material (4) is a rubber-like elastic body having flexibility at room temperature.   The denture according to claim 4, wherein the auxiliary cover material (4) is any one of silicon resin, urethane resin, soft vinyl chloride resin, EVA, natural rubber, and synthetic rubber.   The denture according to claim 1 or 4, wherein the auxiliary cover material (4) is attached to an outer surface and an inner surface of the artificial tooth (3) and the gingival part (2).   The denture according to claim 1 or 4, wherein the auxiliary cover material (4) is formed into an uneven gingival margin (4A) along the cervical line (3A) of the artificial tooth (3).

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