JP6262018B2 - Manufacturing method for denture - Google Patents

Description

The present invention relates to a manufacturing method of Yuyukagi teeth capable of carrying different things.

A denture made of an artificial tooth and a denture base is a necessity for those who have lost their teeth. A technique described in Patent Document 1 is known as a technique related to a denture.
Patent Document 1 describes a denture having an information function of embedding an information description piece in an embedding depression carved in a denture base or an artificial tooth, then covering and fixing with a transparent resin, and polishing the surface of the transparent resin. ing.
The denture described in Patent Document 1 is used as an information description piece, after selecting and confirming information to be displayed, using a personal computer to print on a film, laminating, or information on the upper surface of a metal plate. The information displayed on the information description piece includes characters such as name, blood type, dental clinic name, medical record number, telephone number, and address, symbols, and photographs.

Utility Model Registration No. 3080133

However, since the denture described in Patent Document 1 has the information description piece embedded in an indentation recess carved in the denture base or artificial tooth, for example, when a photograph is selected as information to be displayed on the information description piece Is difficult to see because it cannot embed very large photos.
If a large embedding recess is formed in the denture base in order to embed a large information recording piece as a mounting body, the strength decreases. In addition to the rectangular shape of the mounting body, when embedding an arbitrary shape such as a triangular shape, a pentagonal shape, a polygonal shape higher than that, or an irregular shape, there is a balance with the shape of the embedding recess. It is constrained to occur.

The present invention aims to provide a manufacturing method of Yuyukagi teeth can be supported implementation of various shapes and sizes to denture base.

The base denture according to the present invention is a first denture base portion that serves as a base denture base that serves as a base of a denture base by placing a soft synthetic resin material in a cavity formed by a first mold and a second mold . A resin plate and a second resin plate having light transmittance for forming a cover denture base portion that covers the basic denture base portion are molded, and the first resin plate and the second resin in a softened state are molded. The mounting body is arranged between the plate and integrated by applying pressure to prepare a pre-processing denture base, and the pre-processing denture base is arranged in an impression model, and the shape of the impression model It can be produced by a method for manufacturing a denture having a denture base, comprising a transfer step of transferring a denture base to provide a denture by providing an artificial tooth and a gingival part on the denture base .
According to the method for producing a denture of the present invention, the mounting body is sandwiched and carried between the basic denture base and the cover denture base, not the hole or dent opened in the denture base, The shape and size of the mounting body are not restricted by the shape of the hole or indentation. Moreover, since a hole and a hollow are not provided in a denture base, the intensity | strength of a denture base can be maintained.

  In the preparation step, the first resin plate and the second resin plate are formed from a soft synthetic resin material, and the mounting body is interposed between the first resin plate and the second resin plate. It is desirable that it is a step of arranging and integrating by applying pressure to form the denture base before processing. By doing so, since the basic denture base and the cover denture base are in close contact with each other and are molded as one piece without any boundary, it is possible to prevent air from entering and peeling between them.

  An arrangement in which the mounting body is disposed between the first resin plate and the second resin plate is disposed in a cavity formed by the first mold and the second mold, and the first It is desirable to make the total volume of the first resin plate and the second resin plate larger than the volume of the cavity when pressure is applied to the mold and the second mold for integration. . When the mounting body is disposed between the first resin plate and the second resin plate, when these volumes are larger than the volume of the cavity, an excessive amount overflows from the cavity C, and the cavity C Since the internal pressure increases, good bondability between the first resin plate and the second resin plate can be obtained.

  Since the present invention can maintain the strength of the denture base without restricting the shape and size of the mounting body due to the shape of the hole or indentation, the denture base carries mounting bodies of various shapes and sizes. Can be made.

It is a top view which shows the base denture based on Embodiment 1 of this invention. It is AA sectional drawing of the denture shown in FIG. It is a figure which shows the state which has arrange | positioned the impression model to the flask. It is a figure for demonstrating the manufacturing method of the denture shown in FIG. 1, (A) is a figure which shows the denture base before a process which has arrange | positioned the photograph between the 1st resin board and the 2nd resin board, (B) is a figure which shows the state which has arrange | positioned the denture base before a process in an impression model. It is the figure which inserted the photograph between the basic denture base part and the cover denture base part, and shape | molded the denture base using the impression model as a pressing die. It is a figure which shows the state which formed the occlusion bank in the denture base. It is a figure for demonstrating the process of the manufacturing method of the denture based on Embodiment 2 of this invention, (A) is the figure which shows the state which has arrange | positioned the synthetic resin material used as a 1st resin board in the press apparatus. (B) is a figure which shows the state by which the 1st resin board was shape | molded with the press apparatus, (C) is a figure which shows the state which has arrange | positioned the synthetic resin material used as a 2nd resin board in the press apparatus, (D) These are figures which show the state by which the 2nd resin board was shape | molded with the press apparatus. It is a figure for demonstrating the process of the manufacturing method of the plate denture performed from FIG. 7, (A) has arrange | positioned the photograph to the press apparatus between the 1st resin board and the 2nd resin board. The figure which shows a state, (B) is a figure which shows the state which applied the pressure with a press apparatus, (C) is a figure which shows the state which took out the denture base before a process from a press apparatus, (D) is a denture before a process on an impression model It is a figure which shows the state which has arrange | positioned the floor. It is sectional drawing which shows the base denture based on Embodiment 2 of this invention.

(Embodiment 1)
A plate denture according to Embodiment 1 of the present invention will be described with reference to the drawings. In the present specification, the denture base will be described with the palate side as the front surface and the side in contact with the mucosal surface of the wearer's oral cavity as the back surface.
As shown in FIG. 1, the denture 1 is a total denture that is attached to the upper jaw of the wearer. The denture 1 includes an artificial tooth 2 that serves as a tooth of the wearer, a denture base 3, and a gingival portion 4 that supports the artificial tooth 2.
As shown in FIG. 2, the denture base 3 includes a basic denture base 31 as a base and a cover denture base 32 covered on the basic denture base 31.

  The basic denture base 31 is a thick synthetic resin material, and is formed of a colored resin plate material that is a light-shielding member. In the first embodiment, as the resin plate material forming the basic denture base 31, a plate material having a pink color matching the color of the palate and the alveoli and having a thickness of about 2 mm is used. An uneven portion 31 a is formed on the back surface of the basic denture base 31 so as to be in close contact with the mucosal surface of the palate.

  The cover denture base 32 is a synthetic resin material that is thinner than the resin plate that forms the basic denture base 31, and is formed of a transparent resin plate that is a light-transmitting member. In the first embodiment, a transparent plate material having a thickness of about 2 mm is used as the resin plate material forming the cover denture base 32.

The basic denture base 31 and the cover denture base 32 are integrated in close contact. A mounting body is sandwiched between the basic denture base 31 and the cover denture base 32. Various mounting bodies can be used.
For example, a piece of paper or a plate with a photograph, characters or / and symbols, a piece of paper or a plate with optical information, or a piece of paper with a pattern, an IC chip, a pressed flower, or the like is possible. Depending on the space to be sandwiched between the basic denture base 31 and the cover denture base 32, the mounting body can be inserted with any thickness as long as it does not make the wearer feel uncomfortable. Can do.

In the case of a photograph, it can be a face photograph of the wearer, a full body photograph, a photograph of the upper body, and the like. In the case of a photograph of the wearer, the wearer who is the owner can be easily identified. Also, as other photographs, for example, animal photographs, the wearer can be discriminated if the animal and the wearer are assigned at a nursing facility.
In the case of a piece of paper or a plate in which characters or / and symbols are written, personal information about the wearer (for example, the wearer's name, address, telephone number, etc.), identification information assigned to each wearer (for example, , An ID composed of a combination of numbers, English letters or symbols), an administrator name managing the denture 1 and a facility name.
As the piece of paper, coated paper, fine paper, glossy paper, Western paper such as Kent paper, various Japanese papers and the like can be used. As the plate body, metal, resin, ceramics, wood and the like can be used.
In the case of a paper piece or plate body on which optical information is written, the optical information can be a one-dimensional barcode, a two-dimensional barcode, and a reading code written in a dot pattern.
In the case of an IC chip, an RFID (Radio Frequency Identification) tag that can be read in a non-contact manner that operates using a signal from a reading device as electric power can be used. Since a large amount of data can be stored in the IC chip, personal information of the wearer, information of the manager, and the like can be stored.
Pressed flowers are dried with the flowers and leaves collected. If the type of pressed flower is determined for each wearer, the wearer can be identified for each denture 1 even if it is a pressed flower.

  In the first embodiment, a photograph P in which the periphery of the face is cut into an oval shape is carried as a mounting body.

  The manufacturing method of the plate denture 1 based on Embodiment 1 of this invention comprised as mentioned above is demonstrated based on drawing. In the first embodiment, a photograph will be described as an example of a mounting body to be carried on the plate denture 1.

First, at the dental clinic, a concave shape is collected from the mouth of the wearer wearing the denture, and an impression model that is convex from the concave shape is produced and sent to the dental laboratory. At the dental laboratory, a concave mold is produced again from the impression model, and an impression model for producing the plate denture 1 shown in FIG. 1 is produced from this concave mold.
Next, the impression model M is immersed in the molten low melting point alloy 52 filled in the flask 51, and the molten low melting point alloy 52 is solidified and fixed.

  A suction port for degassing is provided on the bottom surface of the flask 51, and the low-melting-point alloy 52 is solidified by solidification of the molten low-melting-point alloy 52, and solidifies in a disc shape with the peripheral wall of the flask 51. A gap is formed between the low melting point alloy 52 and the surrounding wall surface.

  In this state, a preparation process is performed. In the preparation step, as shown in FIG. 4A, the first denture base 31 (see FIG. 2) serving as the base of the denture base and the base denture base 31 are covered. A second resin plate 62 for preparing the cover denture base 32 (see FIG. 2) is prepared. The first resin plate 61 and the second resin plate 62 are formed of a synthetic resin material, and a disc-shaped resin plate may be purchased, or the manufacturer owns a press device for molding. If it is, the producer may mold it.

  When the first resin plate 61 and the second resin plate 62 are molded by a press device, a soft resin synthetic resin material is disposed in a cavity (molding space) formed by an upper mold and a lower mold. Apply pressure. And the 1st resin board 61 and the 2nd resin board 62 are each shape | molded by hardening the synthetic resin board of the softened state from which the external shape became circular shape.

  A photograph P is arranged between the first resin plate 61 and the second resin plate 62 to prepare as a denture base 63 before processing. At this time, the first resin plate 61 and the second resin plate 62 are heated and softened in advance by a heating device such as an oven.

Next, a transfer process is performed. In the transfer step, as shown in FIG. 4B, the pre-processing denture base 63 softened by heating disposed on the impression model M is pressurized and heated from the pre-processing denture base 63 side, The shape is transferred to the denture base 63 before processing. For example, compressed air may be injected, or the pre-processing denture base 63 may be pressed with another pressing device. When compressed air is jetted onto the pre-processing denture base 63, the pre-processing denture base 63, which is larger than the contour of the impression model M, is curved toward the peripheral wall of the impression model M, and the plate-shaped pre-processing denture base 63 as a whole is impressed. It deform | transforms into the shape which covers the whole M, and contact | adheres.
When the shape of the impression model M is transferred to the pre-processing denture base 63, the floor outline is prepared with a handpiece drill, a raise or the like, and the denture base 3 shown in FIG. 5 is produced.

After the denture base 3 can be produced, the artificial tooth 2 is provided on the denture base 3 together with the gingival part 4 by the same method as the conventional method for producing a denture. Details will be described below.
First, the impression model M is shaved or broken, the denture base 3 is taken out from the low melting point alloy 52 in the flask 51, and the impression model M is shaved or cracked to remove the denture base 3. Next, the denture base 3 is again covered with the impression model M produced from the concave mold produced at the dental laboratory, and the occlusal ridge 55 is filled with wax on the alveolar crest of the denture base 3 as shown in FIG. Form. And the artificial tooth 2 (refer FIG. 1) is arranged, adjusting the height and thickness of the occlusal bank 55, and the occlusal bank 55 is formed in the shape of the gingival part 4. FIG.

Next, the impression model M is removed, the denture base 3 in which artificial teeth are supported by the occlusal embankment 55 is placed in a lower flask filled with gypsum, and gypsum to be buried is filled from above, and a pair of flasks ( Cover with (not shown).
And a pair of flasks are put into a heating furnace, and by heating, the occlusal bank 55 is melted and removed. A space that is formed by melting the occlusal dyke 55 is filled with a resin that becomes the gingival portion 4.
And it hardens | cures to the method according to the kind of resin. For example, if the resin is a chemical polymerization type, it is polymerized at room temperature. Moreover, if it is a heat polymerization type, it is polymerized by heating. If the resin used as the gingival part 4 hardens | cures, the base denture 1 shown in FIG. 1 can be obtained.

  It is desirable that the resin to be the gingival part 4 has a high affinity with the cover denture base part 32. When the affinity is high, when the resin serving as the gingival part 4 is cured, it is possible to make it difficult to distinguish the boundary between the gingival part 4 and the cover denture base part 32 by integrating with the cover denture base part 32.

  Thus, by forming the gingival part 4, it can be set as the color different from the cover denture base part 32 and the basic denture base part 31. FIG. Therefore, when the gingival part 4 is pink according to the color of the mucous membrane of the palate or alveoli, even when the base denture base part 31 and the cover denture base part 32 are formed of a transparent resin, There is no sense of incongruity.

  In the denture 1 manufactured as described above, the photograph P to be carried as a mounting body is sandwiched between the basic denture base 31 and the cover denture base 32 instead of the hole or dent opened in the denture base. Therefore, the shape and size of the photo P are not restricted by the shape of the hole or the depression. Therefore, since the large-sized photograph P can be carried on the denture base 3, it is easy to visually recognize from the outside. Moreover, since a hole and a hollow are not provided in a denture base, intensity | strength can be maintained. Therefore, the denture 1 can carry mounting bodies such as photographs P having various shapes and sizes on the denture base 3.

  Since the cover denture base 32 is formed of a transparent light-transmitting member, the photograph P can be viewed from the outside without using a special reading device. The manager of the facility where the wearer resides can be identified. Moreover, since the basic denture base 31 can also be made transparent, if the photo P is a double-sided photo in which the back surfaces of two photos are bonded together, the photo P is also visible from the back surface of the denture 1. can do.

(Embodiment 2)
A plate denture according to Embodiment 2 of the present invention will be described with reference to the drawings. In Embodiment 2, it is between the 1st resin board for setting it as the basic denture base part used as the base of a denture base, and the 2nd resin board for setting it as the cover denture base part covered on a basic denture base part. Further, when the mounting body is sandwiched and carried, the softened first resin plate and second resin plate are used.

A method for manufacturing the denture according to the second embodiment will be described with reference to the drawings.
As shown in FIG. 8D, an impression model M is prepared in advance from a wearer who wears a denture, and this impression model M is formed into a molten low melting point alloy 52 filled in a flask 51. It is assumed that the molten low melting point alloy 52 is solidified and fixed by dipping.

  In the method for manufacturing a denture according to the second embodiment, first, a preparation process is performed. A first resin plate for the base denture base 31 (see FIG. 9) to be a base of the denture base and a cover denture base 32 (see FIG. 9) for covering the base denture base 31. The two resin plates are respectively molded from a synthetic resin material.

  As the synthetic resin material, for example, a liquid MMA (methyl methacrylate) resin and a powdered PMMA (polymethyl methacrylate) resin mixed and polymerized can be used.

  A press device is used when the first resin plate and the second resin plate are molded. As shown in FIG. 7A, the press device 80 includes a heater 81 serving as a lower mold (first mold) and a pressing mold 82 serving as an upper mold (second mold). The pressing mold 82 is formed with a recess having a circular outer shape. In the pressing device 80, the cavity C (molding space) is formed by combining the inner space of the recess with the plane of the heater 81.

When the heater 81 of the press device 80 is in a heated state and the synthetic resin material 71 is in a softened state in a bowl shape, the synthetic resin material 71 is disposed in the cavity C formed by the heater 81 and the pressing die 82. .
Next, as shown in FIG. 7B, the pressing die 82 is lowered to sandwich the softened synthetic resin material 71 between the heater 81 and apply pressure. By doing so, for example, if the cavity C is the pressing die 82 having a depth of about 2 mm, the first resin plate 61 in a softened state of about 2 mm is molded.

Next, as described with reference to FIG. 7A, the softened synthetic resin material 71 is placed in the cavity C formed by the heater 81 and the pressing die 82 shown in FIG. 7C. .
Next, as shown in FIG. 7 (D), the pressing die 82 is lowered, and the soft resin synthetic resin 71 is sandwiched between the heater 81 and a pressure is applied. The resin plate 62 is molded.

  Next, as shown in FIG. 8A, in a state where the photograph P as a mounting body is positioned between the softened first resin plate 61 and the softened second resin plate 62, Arranged in the cavity C formed by the heater 81 and the pressing die 82.

Next, as shown in FIG. 8B, the pressing die 82 is lowered, and the pressure is applied to the first resin plate 61 and the second resin plate 62 between which the photograph P is sandwiched with the heater 81. Multiply.
Since the cavity C in which the first resin plate 61 of about 2 mm and the second resin plate 62 of about 2 mm are arranged has a depth of about 2 mm, the first resin plate 61 and the second resin plate 62 About 2 mm of the total thickness of about 4 mm is extra.

That is, since the total volume of the first resin plate 61 and the second resin plate 62 is larger than the volume of the cavity C, an extra 2 mm of resin overflows from the cavity C, and the heater 81 and the pressing die 82 Leaked from the gap and removed.
Since the synthetic resin material is filled in the cavity C by the first resin plate 61 and the second resin plate 62 to the extent that it overflows from the cavity C, the pressure in the cavity C increases, so the first resin plate 61 and the first resin plate 61 Good bondability with the second resin plate 62 is obtained. Further, since air easily escapes from the first resin plate 61 and the second resin plate 62, the quality can be improved.

In this manner, the pre-processing denture base 63 shown in FIG. 8C can be formed.
In the second embodiment, the first resin plate 61 having a thickness of about 2 mm and the second resin plate 62 having a thickness of about 2 mm are pressed, and the cavity C of the pressing mold 82 has a depth of about 2 mm. The pre-processing denture base 63 having a thickness of about 2 mm is formed by molding using the mold 82, but the first resin plate 61 and the second resin plate 62 are the depth of the pressing mold 82. Depending on the thickness, the thickness can be varied.

  As shown in FIG. 8C, the pre-processed denture base 63 formed in this way is made into a single piece by applying pressure to the softened first resin plate 61 and the second resin plate 62. Therefore, the photograph P (not shown in FIG. 8C) can be included in a state of being integrally formed without a boundary.

  If the pre-processing denture base 63 can be molded, the transfer process may be performed in a softened state, or the pre-processing denture base 63 may be once cured and the transfer process may be performed. When the pre-processing denture base 63 is in a hardened state, it is softened by heating in advance using a heating device such as an oven.

  As in the first embodiment, as shown in FIG. 8D, the softened pre-denture denture base 63 placed on the impression model M is pressurized and heated from the pre-denture base denture base 63 side to create an impression. The shape of the model M is transferred to the denture base 63 before processing.

  For example, in the method for manufacturing a denture according to Embodiment 1, as described with reference to FIGS. 4A and 4B, the cured first resin plate 61 and the second resin plate 62 is arranged as a pre-processing denture base 63 and then preheated to the pre-processing denture base 63 to transfer the shape of the impression model M to the pre-processing denture base 63. The denture base 3 may be produced.

However, once the first resin plate 61 and the second resin plate 62 in a cured state are heated together and softened to transfer the shape of the impression model M, the first resin plate 61 is transferred. There is a possibility that air enters between the second resin plate 62 and the second resin plate 62 and gradually peels off.
In the method for manufacturing a denture according to the second embodiment, when the softened state is applied, the first resin plate 61 and the second resin plate 62 are pressed into one sheet, and the denture base 63 before processing is processed. Therefore, the first resin plate 61 and the second resin plate 62 are in close contact with each other, so that there is no boundary, so that the first resin plate 61 and the second resin plate 62 are formed. Can be prevented from peeling off.

When the shape of the impression model M is transferred to the pre-processing denture base 63, the floor outline is prepared with a handpiece drill, a raise or the like, and the denture base 3 shown in FIG. 5 is produced.
If the denture base 3 can be manufactured, the subsequent steps are the same as those in the method for manufacturing a denture according to the first embodiment, and the description thereof will be omitted.

  Thus, the denture base 3 according to the second embodiment constitutes the denture base 3 as shown in FIG. 9 while having the same configuration as the base denture 1 (see FIG. 2) according to the first embodiment. Since the basic denture base 31 and the cover denture base 32 are integrally formed and include the photograph P as a mounting body, the basic denture base 31 and the cover denture base 32 are peeled off. Since it is difficult for problems to occur, the wearer can use the denture 1 with confidence in the oral cavity for a long period of time.

  In the second embodiment, as the pressing device 80, a planar heater 81 in which the first mold is a lower mold and a pressing mold 82 in which a recess in which the second mold is an upper mold are formed. Although it is provided, a recess may be formed in the lower mold, and the upper mold may be a flat surface.

  Although the full denture 1 according to the first and second embodiments has been described by taking the maxillary full denture as an example, it can be a full denture of the lower jaw or a local denture. In the case where the mounting body is carried on the lower full denture or the local denture, the mounting body may be positioned on the alveolar wall of the denture base.

The method of manufacturing with beds define teeth of the present invention, all a removable partial denture or denture is a partial denture is suitable for denture. In addition, since the denture of the present invention can be easily identified by the wearer, it can be used in a nursing facility or a hospital where many wearers live together. Furthermore, if the denture of the present invention is used, the identity verification at the time of disaster occurrence can be facilitated. Further, if the mounting body has a high design property, the aesthetics can be improved, so that the wearer's preference can be satisfied, or a gift can be provided.

DESCRIPTION OF SYMBOLS 1 Plated denture 2 Artificial tooth 3 Denture base 31 Basic denture base 31a Concavity and convexity part 32 Cover denture base part 4 Gingival part 51 Flask 52 Low melting point alloy 55 Occlusal levee 61 1st resin board 62 2nd resin board 63 Before processing Denture base 71 Synthetic resin material 80 Press device 81 Heater 82 Pressing die 82a Recess P Photo M Impression model C Cavity

Claims (2)

A first resin plate for disposing a softened synthetic resin material in a cavity formed by a first mold and a second mold to form a basic denture base serving as a base of a denture base, and the basic denture base A second resin plate having light transmittance for forming a cover denture base portion to be covered with the portion, and a mounting body between the first resin plate and the second resin plate in a softened state And preparing the denture base before processing by applying pressure and integrating ,
A transfer step of placing the denture base before processing in an impression model and transferring the shape of the impression model to a denture base ;
A method for producing a denture, comprising: providing an artificial tooth and a gingival part on the denture base to make a denture. Wherein those of the mounting body is arranged, and disposed in the first mold and the second cavity formed by the mold between the first resin plate and the second resin plate, wherein than the volume of the cavity when integrating over the pressure in the first mold and the second mold and to increase the total volume of the second resin plate and the first resin plate A method for producing a denture according to claim 1 .

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