JP2021142030A - Base plate for artificial tooth temporary adhesion and artificial tooth temporary adhesion body - Google Patents

Abstract

To provide a base plate for artificial tooth temporary adhesion tool which can be easily biodegraded in soil or in compost, and can be discarded at low cost, relative to a base plate which is formed of a non-biodegradable resin for artificial tooth temporary adhesion tool when being discarded as an industrial waste, and an artificial tooth temporary adhesion body using the same.SOLUTION: There is provided a base plate 3 for artificial tooth temporary adhesion tool which is formed of a biodegradable resin. There is also provided an artificial tooth temporary adhesion body 4 using the base plate, in which, a layer 2 of an ease-of-adhesion and ease-of peeling material whose width is thinner than a width of the base plate, is formed along a surface longitudinal direction at an inside of a side face of the base plate, and on the layer of the ease-of-adhesion and ease-of peeling material, an artificial tooth 1 is temporarily adhered.SELECTED DRAWING: Figure 1

Description

The present invention relates to a substrate for a temporary adhesive for artificial teeth used in dental treatment and the like, and an artificial tooth temporary adhesive using the same.

Generally, in dental treatment, there are cases where artificial teeth are used to make up for the missing part of the missing tooth, and artificial teeth made of plastic or pottery (including ceramic) are used for the artificial teeth. However, when an artificial tooth manufacturer is requested to purchase by a dental technician, a dental laboratory, or a hospital with dentistry or oral surgery, multiple artificial teeth are placed side by side on the artificial tooth temporary adhesive. A temporarily bonded artificial tooth temporary adhesive is used. The artificial tooth temporary adhesive is usually narrower than the width of a substrate made of non-biodegradable plastic such as polystyrene, polyethylene, polypropylene, or the like and having a horizontally long planar shape and the substrate for temporarily adhering artificial teeth. For artificial tooth temporary adhesives in which an adhesive layer (including double-sided adhesive tape) or a layer of an easily adhesive and easily peelable material such as microcrystallizing wax is formed along the surface longitudinal direction inside the side surface of the substrate. Multiple artificial teeth, such as anterior teeth (left and right, middle incision, side cutting), on the adhesive layer (including double-sided adhesive tape) or the layer of easy-adhesive and easily peelable material such as a layer of microcrystallizing wax on the substrate. A total of 6 teeth and dentures) and back teeth (8 left and right, 1st premolar, 2nd premolar, 1st premolar, 2nd premolar) can be easily adhered and peeled off from the substrate. The back side of the artificial tooth is temporarily adhered to the layer (for example, an adhesive layer or a layer of microcrystallizing wax) (see Non-Patent Documents 1 to 3 below), and the artificial tooth required by a dental engineer or the like is artificially bonded. It is used by removing it from the temporary tooth adhesive and attaching it to the denture base.

The present invention relates to a substrate for an artificial tooth temporary adhesive constituting the artificial tooth temporary adhesive and an artificial tooth temporary adhesive using the substrate.

Yamahachi Dental Industry Co., Ltd. June 2017 "Product Comprehensive Catalog 2017-19", pp. 9-12, 19 Quest Co., Ltd. Published in June 2009 "Dental Products General Catalog" 2009-2012 01-04, 06, 08 pages Quest Co., Ltd. Published in October 2007 "DENTAL PRODUCTS 2006-2008 CATALOG" 2009-2012 01, 03, 05, 06 pages

As described above, polystyrene, polypropylene, polyethylene, and other synthetic resins (plastics) that are not normally biodegradable are usually used as the substrate used in the conventional artificial tooth temporary adhesive as described above. ing.

In recent years, it has been reported that these plastic wastes become microplastics and affect the ecosystem due to marine pollution. According to the United Nations Information Center, 90% of plastic waste is not recycled, and more than 8 million tons of plastic waste flow into the sea every year.

Then, the substrate used for the artificial tooth temporary adhesive is discarded when the artificial tooth is removed from the artificial tooth temporary adhesive and all the artificial teeth are used, but it is industrially disposed of as industrial waste. It is necessary to outsource the disposal to a material processing company. In addition to the above plastics, many of the plasters used in work models for dental engineers are also disposed of as industrial waste from the dental laboratories of dental engineers. consignment rates of, for example, gypsum whereas a 20 yen / kg, in the case of the non-biodegradable plastic is 2000 yen / m 3 ^(becomes price per Lube unit in the case of plastic), expensive In addition, the rank of industrial waste may differ between plastic and plaster, so it was necessary to manage them separately and request disposal.

An object of the present invention is an artificial tooth that, when discarded, does not cause undegraded or incompletely decomposed outflow to rivers and seas by decomposing into low-molecular-weight compounds such as carbon dioxide and water in soil and compost. Providing substrates for temporary adhesives and artificial tooth temporary adhesives using the substrates, and the disposal request fee for disposal as industrial waste can be made much cheaper than non-biodegradable plastics, and each regional government It is to provide a substrate for artificial tooth temporary adhesive, which may tend to have a rank equivalent to that of gypsum, depending on the industrial waste disposal company, and an artificial tooth temporary adhesive using the substrate.

In order to solve the above problems, the substrate for the artificial tooth temporary adhesive used in the artificial tooth temporary adhesive of the present invention is as follows.

(1) The substrate for the artificial tooth temporary adhesive of the present invention is characterized by being made of a biodegradable resin.

(2) In the substrate for the artificial tooth temporary adhesive according to the above item (1), the artificial tooth temporary adhesive has a horizontally long flat surface and a width of the substrate for temporarily adhering the artificial tooth. It is preferable that the narrower layer of the easily adhesive and easily peelable material is a substrate for an artificial tooth temporary adhesive formed along the surface longitudinal direction inside the side surface of the substrate.

(3) In the substrate for the artificial tooth temporary adhesive according to the above item (2), the artificial tooth temporary adhesive in which the layer of the easily adhesive and easily peelable material is an adhesive material layer or a layer of microcrystallizing wax. It is preferably a substrate for use.

(4) In the substrate for the artificial tooth temporary adhesive according to any one of the above items (1) to (3), the substrate has a cross-sectional shape in the width direction inside the side surface of the substrate in the longitudinal direction of the surface. It is preferable that the substrate is formed with a concave groove for forming a layer of the easily adhesive and easily peelable material along the above.

(5) In the substrate for the artificial tooth temporary adhesive according to the above item (4), the cross-sectional shape of the concave groove of the substrate in the direction perpendicular to the longitudinal direction is substantially V-shaped, and the release portion is formed. It is preferable that the shape is selected from an upward substantially U-shape and a substantially arc-shaped shape.

(6) In the substrate for the artificial tooth temporary adhesive according to any one of the above items (1) to (5), the biodegradable resin is preferably a biomass-derived biodegradable resin. ..

(7) In the substrate for artificial tooth temporary adhesive according to any one of the above items (1) to (6), when the substrate for artificial tooth temporary adhesive is disposed of as industrial waste, It is preferable that the substrate can be disposed of at a cost equivalent to that of gypsum waste.

(8) Further, in the artificial tooth temporary adhesive body of the present invention, the substrate is the substrate according to any one of the above items (1) to (7), and the width is narrower than the width of the substrate for easy adhesion. An artificial tooth temporary adhesive body in which a layer of an easily peelable material is formed along the surface longitudinal direction inside the side surface of the substrate, and an artificial tooth is temporarily adhered on the layer of the easily adhesive removable material. ..

(1) The substrate for artificial tooth temporary adhesive used in the artificial tooth temporary adhesive of the present invention decomposes even when it is discarded in soil or compost, and is decomposed into low molecular weight compounds such as carbon dioxide gas. Since it is decomposed into water, it becomes microplastic and prevents marine pollution from affecting the ecosystem. Unlike the carbon dioxide gas generated by burning an object, the generated carbon dioxide does not generate a large amount in a short time, but it is gradually decomposed in the soil and generated little by little, so it is easily taken up by plants and fixed. , The increase in the proportion of carbon dioxide in the atmosphere can be considerably reduced.

In addition to the above plastics, a large amount of plaster is also discarded as industrial waste from dental laboratories of dental engineers who handle work models for dental engineers, but the industrial waste treatment of the substrate using biodegradable resin The commission fee is significantly reduced compared to the substrate using non-biodegradable resin. In addition, as a result of the rank of disposal as industrial waste being classified into the same rank as gypsum, the need to separate gypsum and substrate and request disposal to a disposal company tends to be reduced, and disposal It is expected that the labor of processing things will be reduced.

(2) Further, in the substrate for the artificial tooth temporary adhesive according to item (1) of the means for solving the above-mentioned problem, the artificial tooth temporary adhesive includes a substrate having a horizontally long planar shape and an artificial tooth. A preferred embodiment in which a layer of an easily adhesiveable easily peelable material having a width narrower than the width of the substrate for temporary bonding is a substrate for artificial tooth temporary adhesives formed along the surface longitudinal direction inside the side surface of the substrate. Therefore, when the artificial tooth is removed from the artificial tooth temporary adhesive, the operator's finger is less likely to come into contact with a layer of an easily adhesive and easily peelable material, for example, an adhesive layer or a layer of microcrystallizing wax. When the substrate is discarded, the range for removing the layer of the easily adhesive and easily peelable material is narrower than that of the substrate surface, and the time and effort for removing the layer of the easily adhesive and easily peelable material can be reduced, which is preferable.

(3) In the substrate for the artificial tooth temporary adhesive according to item (2) of the means for solving the above problems, the layer of the easily adhesive and easily peelable material is the adhesive layer or the layer of the microcrystallizing wax. By the preferred embodiment of the artificial tooth temporary adhesive substrate used, they can be removed from the substrate relatively easily as compared to a normal non-adhesive adhesive that solidifies, and the substrate is discarded. It is preferable that the substrate can be relatively easily removed from the easily adhesive and easily peelable material and then discarded, which can reduce the time and effort required to dispose of the substrate.

(4) In the substrate for artificial tooth temporary adhesive according to any one of (1) to (3) of the means for solving the above-mentioned problem, the substrate has the widthwise cross-sectional shape. The artificial tooth temporary adhesive body is preferably a substrate in which a concave groove for forming a layer of the easily adhesive and easily peelable material is formed along the surface longitudinal direction inside the side surface of the substrate. It is possible to prevent the easily adhesive and easily peelable material such as the adhesive layer and the microcrystallizing wax from squeezing out of the groove and contaminating the substrate surface outside the groove during transportation to the consumer or the like. Therefore, it is possible to reduce the time and effort required to remove the easily adhesive and easily peelable material protruding from the outer substrate surface, which is preferable.

(5) In the substrate for artificial tooth temporary adhesive according to item (4) of the means for solving the above-mentioned problems, the cross-sectional shape in the direction perpendicular to the longitudinal direction of the concave groove of the substrate is substantially V-shaped. By adopting a preferred embodiment in which the shape and the release portion are a shape selected from an upward substantially U shape and a substantially arc shape, the groove of the substrate can be easily molded and the function of the above item (4) is achieved. Can be achieved as a substrate, which is preferable.

(6) In the substrate for artificial tooth temporary adhesive according to any one of (1) to (5) of the means for solving the above-mentioned problem, the biodegradable resin is biodegradable derived from biomass. In addition to the effects described in item (1) above, the biodegradable period can be shortened as compared with the biodegradable resin derived from petroleum resources, and problems such as depletion of petroleum resources can be solved by adopting the preferred embodiment of the sex resin. , It can be delayed more, which is preferable. In particular, when a biodegradable resin that can bear the "Green Plastic" mark (Japan Bioplastics Association) is used, it is preferable because it is easy for an industrial waste supplier to recognize a reduction in disposal costs.

(7) In the substrate for artificial tooth temporary adhesive according to any one of items (1) to (6) of the means for solving the above problem, the substrate for artificial tooth temporary adhesive is industrialized. When disposing as waste, in addition to the effects described in item (1) above, by adopting a preferred embodiment in which the substrate can be disposed of at a cost equivalent to that of gypsum waste, it is disposed of as industrial waste. In some cases, although there are differences depending on each administrative area and industrial waste company, it tends to be possible to dispose of it at the same cost as gypsum waste, so the rank of treatment as industrial waste is about the same as gypsum. The disposal fee can be significantly reduced compared to the substrate using non-biodegradable resin, and as a result, it is expected that the plaster and the substrate can be disposed of without being separated, and the disposal work should be simplified. May be possible and preferred.

(8) Further, in the artificial tooth temporary adhesive body of the present invention, the substrate is the substrate according to any one of the above items (1) to (7), and the width is narrower than the width of the substrate for easy adhesion. An artificial tooth temporary adhesive body in which a layer of an easily peelable material is formed along the surface longitudinal direction inside the side surface of the substrate, and an artificial tooth is temporarily adhered on the layer of the easily adhesive removable material. Therefore, when the substrate is discarded from the artificial tooth temporary adhesive, the above (1) in the column of the above effect corresponds to any aspect of the means for solving the above-mentioned problems (1) to (7). )-(7), the effect described in at least one corresponding item can be achieved, which is preferable.

FIG. 1A shows a layer of an easily adhesive and easily peelable material having a width narrower than the width of the substrate for temporarily adhering artificial teeth on the surface of the substrate for the artificial tooth temporary adhesive of the present invention (for example, an adhesive material). A layer or a layer such as microcrystallizing wax) is formed along the surface longitudinal direction inside the side surface of the substrate, and the artificial tooth is temporarily adhered on the layer of the easily adhesive and easily peelable material. A plan view showing an example of an embodiment of the body, FIG. 1 (b) is an end view and a view of the cut surface of FIG. 1 (a) when the cut surface of AA'is viewed in the direction of the arrows A and A'. 1 (c) is a side view when only the substrate is viewed from the direction of arrow B in FIG. 1 (a), and FIG. 1 (d) is a front view when only the substrate is viewed from the direction of arrow C in FIG. 1 (a). .. In FIG. 2A, a layer of an easily adhesive and easily peelable material having a width narrower than the width of the substrate for temporarily adhering artificial teeth on the surface of the substrate for the artificial tooth temporary adhesive of the present invention is formed on the side surface of the substrate. FIG. 2 is a plan view showing another embodiment of an artificial tooth temporary adhesive formed along the inner surface longitudinal direction and in which artificial teeth are temporarily adhered on a layer of the easily adhesive and easily peelable material. (B) is an end view of the AA'cut surface of FIG. 2 (a) when viewed in the direction of the arrows A and A', and FIG. 2 (c) shows only the substrate in FIG. 2 (a). 2 (d) is a side view when viewed from the direction of arrow B, and FIG. 2 (d) is a front view when only the substrate is viewed from the direction of arrow C in FIG. 2 (a). In FIG. 3A, a layer of an easily adhesive and easily peelable material having a width narrower than the width of the substrate for temporarily adhering artificial teeth on the surface of the substrate for the artificial tooth temporary adhesive of the present invention is formed on the side surface of the substrate. A plan view and a view showing still another embodiment of the artificial tooth temporary adhesive body formed along the inner surface longitudinal direction and in which the artificial tooth is temporarily adhered on the layer of the easily adhesive and easily peelable material. 3 (b) is an end view of the AA'cut surface of FIG. 3 (a) when viewed in the direction of the arrows A and A', and FIG. 3 (c) shows only the substrate in FIG. 3 (a). ) Is a side view when viewed from the arrow B direction, and FIG. 3 (d) is a front view when only the substrate is viewed from the arrow C direction of FIG. 3 (a). In FIG. 4A, a layer of an easily adhesive and easily peelable material having a width narrower than the width of the substrate for temporarily adhering artificial teeth on the surface of the substrate for the artificial tooth temporary adhesive of the present invention is formed on the side surface of the substrate. A plan view and a view showing still another embodiment of the artificial tooth temporary adhesive body formed along the inner surface longitudinal direction and in which the artificial tooth is temporarily adhered on the layer of the easily adhesive and easily peelable material. 4 (b) is an end view of the AA'cut surface of FIG. 4 (a) when viewed in the direction of the arrows A and A', and FIG. 4 (c) shows only the substrate in FIG. 4 (a). ) Is a side view when viewed from the arrow B direction, and FIG. 4 (d) is a front view when only the substrate is viewed from the arrow C direction of FIG. 4 (a).

The substrate for the artificial tooth temporary adhesive of the present invention (hereinafter, may be simply abbreviated as a substrate) is characterized by being made of a biodegradable resin. Here, "consisting of biodegradable resin" does not mean only those made of biodegradable resin, but in addition to the biodegradable resin, its necessary functions, for example, artificial tooth temporary adhesives. A filler that can satisfy the mechanical strength required for a substrate, and is a substance that biodegrades when buried in the soil, such as shavings and bamboo fibrous materials, and deteriorates the soil environment even when buried in the soil. It also means a mixture of substances that are not allowed to be allowed, for example, calcium carbonate powder, gypsum powder or fine granules, sand, and the like. The blending amount of these fillers varies depending on the type, so it is difficult to unconditionally specify it, but it is sufficient as long as it can satisfy the required mechanical strength and the like, and is about 20% by weight or less based on the total weight, more preferably. It is 10% by weight or less.

Examples of the biodegradable resin to be used include polybutylene adipate / terephthalate, polylactic acid, polybutylene adipate / terephthalate, and a compound of thermoplastic starch (corn starch) (trade name "Matter-Bi product number" manufactured by Novamont SPA). EI51N0 "), polylactic acid, polymer of polylactic acid and other hydroxycarboxylic acids, polybutylene succinate, polyethylene succinate, polybutylene adipate, polybutylene succinate / adipate copolymer, polyhydroxybutyrate / valerite Examples thereof include copolymers, poly-β-hydroxybutyric acid, polycaprolactone, copolymers of caprolactone and other hydroxycarboxylic acids, polyhydroxyalkanoate, polyglycolic acid, etc., and in particular, polybutylene adipate / terephthalate and polylactic acid. Polybutylene adipate / terephthalate and a compound of thermoplastic starch (corn starch) (trade name "Matter-Bi product number EI51N0" manufactured by Novamont SPA), polylactic acid, polylactic acid and other hydroxycarboxylic acids. The polymer and polybutylene succinate are preferable because they have a shorter biodegradation period than other biodegradable resins and can bear the "Green Plastic" mark (Japan Bioplastics Association) without any problem.

The shape and structure of the substrate for the artificial tooth temporary adhesive of the present invention are not particularly limited, and when the artificial tooth is used for the artificial tooth temporary adhesive, the artificial tooth is a layer of the easily adhesive and easily peelable material, for example, an adhesive material (double-sided adhesive). Anything that can exert a supporting function when temporarily adhered to a layer of microcrystallizing wax (including tape) or microcrystallizing wax is sufficient.

In order to facilitate understanding, a small number of specific embodiments will be described with reference to the shapes and structures thereof, but the shapes and structures are not limited to those shown in FIGS. 1 to 4, for example. No.

FIG. 1A is a plan view showing an example of an embodiment of the artificial tooth temporary adhesive body 4 of the present invention.
1 (b) is an end view of the AA'cut surface of FIG. 1 (a) when viewed in the direction of the arrows A and A', and FIG. 1 (c) shows only the substrate 3 in FIG. A side view when viewed from the direction of arrow B in FIG. 1A, and FIG. 1D is a front view when only the substrate 3 is viewed from the direction of arrow C in FIG. 1A.

In these drawings, 1 is an artificial tooth, 2 is a layer of an easily adhesive and easily peelable material for temporarily adhering an artificial tooth, 3 is a substrate, and 4 is an artificial tooth temporary adhesive.

The layer 2 of the easily adhesiveable and easily peelable material having a width narrower than the width of the substrate 3 for temporarily adhering the artificial tooth 1 on the surface of the substrate 3 having a horizontally long flat surface shape for the artificial tooth temporary adhesive is the substrate 1. The artificial tooth temporary adhesive body 4 is formed along the surface longitudinal direction inside from the side surface, and the artificial tooth 1 is temporarily adhered on the layer 2 of the easily adhesive and easily peelable material.

In this embodiment, as is clear from FIG. 1B, the substrate 3 has a cross-sectional shape in the width direction along the surface longitudinal direction inside the side surface of the substrate, and is a layer of the easily adhesive and easily peelable material. A substrate in which a concave groove 7 (a substantially U-shaped groove having a release portion facing upward in a cross-sectional shape perpendicular to the longitudinal direction) for forming 2 is formed, and in this groove, for example, an adhesive layer. Since a layer of an easily adhesive and easily peelable material such as a layer of a microcrystalling wax or a layer of a microcrystalling wax is formed, the layer of the easily adhesive and easily peelable material is formed during transportation of the artificial tooth temporary adhesive to a consumer or the like. However, since it is possible to prevent the flat surface 6 of the substrate surface outside the groove from being soiled by protruding from the groove, when the substrate is discarded, even the layer of the easily adhesive and easily peelable material protruding from the outer substrate surface is reached. It is possible to reduce the trouble of removing it. As for the shape of the groove, the cross-sectional shape in the direction perpendicular to the longitudinal direction is substantially U-shaped (the release portion faces upward), but in the cross-sectional shape, an artificial shape such as a trapezoidal shape, an arc shape, or a V-shape is artificial. Other shapes may be used as long as the temporary tooth adhesive can be formed.

And, importantly, the substrate is made of the above-mentioned biodegradable resin, preferably a biomass-derived biodegradable resin. The substrate made of biodegradable resin derived from biomass is decomposed into water and carbon dioxide in a short time when buried in the soil, and the biodegradable resin is used without contaminating the soil, rivers, sea, etc. The commission fee for industrial waste treatment of substrates is significantly reduced compared to substrates using non-biodegradable resins.

FIG. 2A is a plan view showing another embodiment of the artificial tooth temporary adhesive body 4 of the present invention.

FIG. 2 (b) is an end view of the cut surface of FIG. 1 (a) when the cut surface of AA'is viewed in the direction of the arrows A and A', and FIG. 2 (c) shows only the substrate 3 in FIG. A side view when viewed from the direction of arrow B in FIG. 1A, and FIG. 2D is a front view when only the substrate 3 is viewed from the direction of arrow C in FIG. 1A.

In these drawings, 1 is an artificial tooth, 2 is a layer of an adhesive material layer for temporarily adhering an artificial tooth, or a layer of an easily adhesiveable peelable material such as a layer of microcrystallizing wax, 3 is a substrate, and 4 is an artificial tooth temporary. It is an adhesive.

In this embodiment, as is clear from FIGS. 2 (b), (c), and (d), the substrate 3 is different from the embodiment shown in FIG. 1 in that the cross-sectional shape in the width direction is the side surface of the substrate. A flat substrate on which a concave groove or the like for forming a layer of the easily adhesive and easily peelable material is not formed along the inner surface longitudinal direction, and a layer of the easily adhesive and easily peelable material is formed on this substrate. When 2 is formed, it is a substrate in which a layer of an easily adhesive and easily peelable material is formed on the substrate along the surface longitudinal direction inside the side surface of the substrate.

Since the structure is as simple as a flat plate as compared with the substrate having a concave groove in the longitudinal direction of the substrate shown in FIG. 1, there is an advantage that the cost can be reduced.

And, importantly, the substrate is made of the above-mentioned biodegradable resin, preferably a biomass-derived biodegradable resin. The substrate made of biodegradable resin derived from biomass is decomposed into water and carbon dioxide in a short time when buried in the soil, and the biodegradable resin is used without contaminating the soil, rivers, sea, etc. The commission fee for industrial waste treatment of substrates is significantly reduced compared to substrates using non-biodegradable resins.

FIG. 3A is a plan view showing still another embodiment of the artificial tooth temporary adhesive body 4 of the present invention.

3 (b) is an end view of the cut surface of A-A'of FIG. 3 (a) when viewed in the direction of the arrows A and A', and FIG. 3 (c) shows only the substrate 3 in FIG. A side view when viewed from the direction of arrow B in FIG. 3A, and FIG. 3D is a front view when only the substrate 3 is viewed from the direction of arrow C in FIG. 3A.

In these drawings, 1 is an artificial tooth, 2 is a layer of an easily adhesive and easily peelable material for temporarily adhering an artificial tooth, 3 is a substrate, and 4 is an artificial tooth temporary adhesive.

A layer 2 of an easily adhesiveable and easily peelable material having a width narrower than the width of the substrate for temporarily adhering artificial teeth on the surface of the substrate 3 having a horizontally long flat surface for the artificial tooth temporary adhesive is formed from the side surface of the substrate 1. The artificial tooth temporary adhesive body 4 is formed along the inner longitudinal direction of the surface, and the artificial tooth 1 is temporarily adhered on the layer 2 of the easily adhesive and easily peelable material.

In this embodiment, as is clear from FIG. 3B, the substrate 3 has a cross-sectional shape in the width direction in the surface longitudinal direction inside the side surface of the substrate, similar to the substrate 3 shown in FIG. Along the substrate, a concave groove 7 (a substantially U-shaped groove in which the release portion faces upward in the cross-sectional shape in the width direction of the substrate) for forming the layer of the easily adhesive and easily peelable material is formed. Further, as shown by reference numeral 5, it is shown in FIG. 1 that the partition wall 5 is formed along the side portion of the concave groove 7 and slightly extends above the flat surface 6 of the substrate surface. It is different from the board. The concave groove in which the partition wall 5 is formed is filled with a layer of an easily adhesive and easily peelable material up to the height of the partition wall 5.

Also in the embodiment shown in FIG. 3, while the artificial tooth temporary adhesive is being transported to a consumer or the like, the layer of the adhesive material layer or the layer of the easily adhesive and easily peelable material such as the layer of the microcrystallizing wax is formed. Since it is possible to prevent the flat surface 6 of the substrate surface outside the partition wall 5 from being soiled by protruding outside the partition wall 5, when the substrate is discarded, the easy-adhesion easy peeling that protrudes from the flat surface 6 of the outer substrate surface. It is possible to reduce the trouble of removing even the layer of possible material. As for the shape of the groove, the cross-sectional shape in the substrate width direction is substantially U-shaped (the release portion faces upward), but the cross-sectional shape in the substrate width direction is an artificial tooth such as a trapezoidal shape, an arc shape, or a V-shape. Other shapes may be used as long as the temporary adhesive can be formed. In the substrate of this form, the side wall 5 is formed, and the partition wall 5 in which the layer 2 of the easily adhesive and easily peelable material filled in the concave groove portion extends slightly above the flat surface 6 of the substrate surface is formed. Since the formed concave groove 7 is filled up to the height of the partition wall 5, the position of the surface of the layer 2 of the easily adhesive and easily peelable material is slightly higher than the flat surface 6 of the substrate surface. More work when the artificial tooth 1 is temporarily adhered to the layer 2 of the easily adhesive and easily peelable material, or conversely, when the artificial tooth 1 is peeled off from the layer 2 of the easily adhesive and easily peelable material and the artificial tooth is taken out. It will be easier to do.

And, importantly, the substrate is made of the above-mentioned biodegradable resin, preferably a biomass-derived biodegradable resin. The substrate made of biodegradable resin derived from biomass is decomposed into water and carbon dioxide in a short time when buried in the soil, and the biodegradable resin is used without contaminating the soil, rivers, sea, etc. The commission fee for industrial waste treatment of substrates is significantly reduced compared to substrates using non-biodegradable resins.

FIG. 4A is a plan view showing still another embodiment of the artificial tooth temporary adhesive body 4 of the present invention. 4 (b) is an end view of the cut surface of A-A'of FIG. 4 (a) when viewed in the direction of the arrows A and A', and FIG. 4 (c) shows only the substrate in FIG. 4 (c). A side view when viewed from the direction of arrow B in a), FIG. 4 (d) is a front view when only the substrate is viewed from the direction of arrow C in FIG. 4 (a).

In these drawings, 1 is an artificial tooth, 2 is a layer of an easily adhesive and easily peelable material for temporarily adhering an artificial tooth, 3 is a substrate, and 4 is an artificial tooth temporary adhesive.

In this embodiment, as is clear from FIG. 1B, the substrate 3 has a concave shape for forming a layer of the easily adhesive and easily peelable material along the surface longitudinal direction inside the side surface of the substrate. Although the substrate is formed with the grooves 7, the concave groove 7 has a substantially V-shaped cross-sectional shape in the width direction of the substrate. In this example, the layer 2 of the easily adhesive and easily peelable material is formed only on one side of the substantially V-shaped groove 7. In this case, as the layer 2 of the easily adhesive and easily peelable material, the double-sided adhesive tape can be easily formed on one side, and this double-sided adhesive tape can be easily peeled off from the end when the substrate is discarded, which is preferable. Further, according to this aspect, the layer 2 of the easily adhesive and easily peelable material is formed only on one side of the substantially V-shaped groove 7, so that the amount of the layer 2 of the easily adhesive and easily peelable material used is shown in FIG. It can be reduced as compared with the embodiments shown in 1 to 3 and the cost can be reduced, and when the substrate is discarded, the area for removing the layer 2 of the easily adhesive and easily peelable material can be reduced, and the labor can be reduced.

As can be seen from FIGS. 4D and 4C, in this embodiment, the substrate 3 is slightly raised and curved in an arc shape toward the center 8 in the longitudinal direction, and is substantially parallel to this raising. , The substantially V-shaped groove 7 is also raised and curved.

And, importantly, the substrate is made of the above-mentioned biodegradable resin, preferably a biomass-derived biodegradable resin. The substrate made of biodegradable resin derived from biomass is decomposed into water and carbon dioxide in a short time when buried in the soil, and the biodegradable resin is used without contaminating the soil, rivers, sea, etc. The commission fee for industrial waste treatment of substrates is significantly reduced compared to substrates using non-biodegradable resins.

The molding method of the substrate made of the biodegradable resin used in the artificial tooth temporary adhesive of the present invention is not particularly limited as long as it is a molding method suitable for these moldings, and for example, injection molding, particularly FIG. In addition to the above, the plate-shaped material shown in FIG. 1 can be molded by extrusion molding or the like, and the substrate shown in FIGS. The sheet-shaped product can be molded by an appropriate method such as vacuum molding or pressure molding.

Further, as the layer of the easily adhesive and easily peelable material, the target object (in the present invention, the target object is an artificial tooth made of plastic, ceramic, etc.) can be easily adhered with a relatively small pressure, and the adhered object can be adhered. It is a layer of a substance that can be easily peeled off, and specific examples thereof include an adhesive layer (including a double-sided adhesive tape) and a layer of microcrystallizing wax.

In the artificial tooth temporary adhesive described above, by using a substrate made of biodegradable resin for artificial tooth temporary adhesive, even if it is discarded in soil or compost, it is decomposed and a low molecular weight compound. For example, since it is decomposed into carbon dioxide gas, water, etc., it becomes microplastic and is prevented from affecting the ecosystem due to marine pollution. Unlike the carbon dioxide gas generated by burning an object, the generated carbon dioxide does not generate a large amount in a short time, but it is gradually decomposed in the soil and generated little by little, so it is easily taken up by plants and fixed. , The increase in the proportion of carbon dioxide in the atmosphere can be considerably reduced.

In addition to the above plastics, many gypsums are discarded as industrial waste from dental laboratories of dental laborers who handle work models for dental engineers and hospitals with dental engineers, but the above using biodegradable resin. The commission fee for industrial waste treatment of substrates is significantly reduced compared to substrates using non-biodegradable resins. In addition, there is a high possibility that the rank for disposal as industrial waste will be classified into the same rank as gypsum, and as a result, the need to separate gypsum and substrate and request disposal to a disposal company will be reduced. There is a possibility that the labor of waste disposal will be reduced.

In particular, when a biodegradable resin that can bear the "Green Plastic" mark (Japan Bioplastics Association) is used, it is cheaper and more preferable because the industrial waste supplier can easily recognize the reduction in the disposal cost.

In the artificial tooth temporary adhesive of the present invention, various embodiments of a substrate made of biodegradable resin used for the artificial tooth temporary adhesive and an artificial tooth temporary adhesive using these substrates have been described above. Is not limited to such an embodiment, and various modifications or modifications can be made without departing from the scope of the present invention.

The substrate used for the artificial tooth temporary adhesive of the present invention and the artificial tooth temporary adhesive using the same are for the artificial tooth temporary adhesive provided to the dental laboratory of a dental technician and the artificial tooth temporary adhesive used therein. Substrate can be provided.

1 Artificial tooth 2 Layer of easy-adhesive and easily peelable material for temporary bonding of artificial tooth 3 Substrate 4 Artificial tooth temporary adhesive 5 Partition wall 6 Flat surface of substrate 7 Concave groove

Claims (8)

A substrate for artificial tooth temporary adhesives, which is characterized by being made of biodegradable resin. In the artificial tooth temporary adhesive, a substrate having a horizontally long flat shape and a layer of an easily adhesiveable easily peelable material having a width narrower than the width of the substrate for temporarily adhering the artificial tooth are formed on the inner surface length of the side surface of the substrate. The substrate for an artificial tooth temporary adhesive according to claim 1, which is a substrate for the artificial tooth temporary adhesive formed along the direction. The substrate for an artificial tooth temporary adhesive according to claim 2, wherein the layer of the easily adhesive and easily peelable material is a substrate for an artificial tooth temporary adhesive in which an adhesive layer or a layer of microcrystallizing wax is used. Claims that the substrate is a substrate in which a concave groove for forming a layer of the easily adhesive and easily peelable material is formed along the surface longitudinal direction in which the cross-sectional shape in the width direction is inside the side surface of the substrate. The substrate for the artificial tooth temporary adhesive according to any one of 1 to 3. According to claim 4, the cross-sectional shape of the concave groove of the substrate in the direction perpendicular to the longitudinal direction is a shape selected from a substantially V shape, a substantially U shape with the release portion facing upward, and a substantially arc shape. The substrate for the artificial tooth temporary adhesive described. The substrate for an artificial tooth temporary adhesive according to any one of claims 1 to 5, wherein the biodegradable resin is a biomass-derived biodegradable resin. Any one of claims 1 to 6, wherein when the substrate for the artificial tooth temporary adhesive is disposed of as industrial waste, the substrate can be disposed of at a cost equivalent to that of gypsum waste. Substrate for artificial tooth temporary adhesive described in the section. The substrate is the substrate according to any one of claims 1 to 7, and a layer of an easily adhesiveable and easily peelable material having a width narrower than the width of the substrate is formed along the surface longitudinal direction inside the side surface of the substrate. An artificial tooth temporary adhesive body formed by temporarily adhering an artificial tooth on a layer of the easily adhesive and easily peelable material.

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