JP2007125113A - Cosmetic tooth and production method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an cosmetic tooth which is easily manufactured according to a mode inside of the oral cavity and a desired cosmetic content of each person, and which can be mounted to teeth with high compatibility and cosmetic property in a short period of time even at a personal level without changing a present state in the oral cavity. <P>SOLUTION: The cosmetic tooth is curved into a form of U-shaped band which can cover the front surfaces of the plurality of teeth and gingiva present between right and left bicuspids in the oral cavity. The front surface of the cosmetic tooth provides an cosmetic surface 3 which is formed of hard resin with color of at least two color of a crown color and a gingiva color and which has the desired front surface shape and color of the dentition and the gingiva, and the rear surface provides a mounting surface formed in a recessed and projecting shape which can be adhered to the crown, cervix, interdental space and gingiva of the teeth with the front faces covered with flexible resin. The cosmetic teeth can be attached to and detached from the front face inside the oral cavity by the flexibility of the hard resin on the side of an cosmetic surface. On the cosmetic surface, an cosmetic member is sometimes fixed separately, and the cosmetic member is sometimes covered with a transparent resin sheet. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a cosmetic tooth for improving the appearance of teeth or gums or decorating teeth by being mounted in the oral cavity, and has a structure capable of improving the appearance and decoration with the same ease as ordinary face makeup and the like. The present invention relates to a method for producing a decorative tooth having the structure.

  As an example of the currently known body cosmetic techniques, there are no habits in enumeration, and there are various modes depending on the age group, TPO, etc. even when taking face makeup and hair makeup, which are typical examples. In addition, in the recent times when individuality is respected, the cosmetic objects have become more diverse, and today, nail art and decoration of nails and eyes with color contacts have become established as one of the fashions.

  Under such circumstances, the aesthetics of teeth have also been highly interested. Teeth are essentially organs that control functions essential to real life, such as food intake, chewing and swallowing, and speech of language, but on the other hand, they also have functions as elements that form faces. For example, it is a common recognition of many people that healthy teeth arranged in white can produce beauty and cleanliness of the mouth by themselves, and can give a pleasant feeling to those who come in contact through dialogue and smiles. And white healthy teeth and firm gums are usually maintained by daily care using oral hygiene products such as toothbrushes.

  On the other hand, various methods for artificially decorating teeth have been proposed (see, for example, Patent Documents 1 to 9). These methods of decorating teeth are intended to make cosmetic teeth active as part of individual fashion, regardless of whether there is any obstacle in real life. These tooth decoration methods can be roughly classified as follows depending on the decoration contents.

  That is, the decoration method 1 (Patent Document 1) is for cosmeticizing a tooth by directly embedding jewelry such as jewelry in the tooth. According to this, the sense of unity between the tooth and the jewelry is strong and lifelong. A decorative effect can be obtained.

  On the other hand, the decoration method 2 (patent documents 2-9) is provided with the decoration body which gave desired form and decoration, and this is mounted | worn on a tooth surface. Among these, those with a decorative body as a seal (Patent Documents 2 to 5) are excellent in versatility, versatility, and mass productivity, such as a decorative nail seal applied to nails, and on the other hand, the mounting surface (back surface) The cover-like decorative body (Patent Documents 6 to 9) adapted to the individual tooth surface shape has an advantage of excellent wearing feeling.

  Further, the decoration method 2 is subdivided into a decoration method 3 using an adhesive (Patent Documents 2 to 8) and a decoration method 4 using a means other than adhesion (Patent Document 9) from the viewpoint of a method for mounting a decorative body. can do. Here, the decoration method 4 allows the decoration body to be attached and detached. According to Patent Document 9, when the tooth is missing, the back surface shape and the surface tension of the saliva that match the missing part, and the tooth If there are few irregularities such as defects in the teeth, then rimple is drilled on the adjacent tooth of the tooth to be decorated and a small protrusion is provided on the decorative body. It is to be attached.

  In addition to the daily care and artificial decoration described above, there is dentistry as a field that brings artificial improvement to teeth. This dentistry is a medical practice that is performed under the examination and treatment of specialists such as dentists and dental technicians when there are defects or defects that cannot be naturally healed or self-solved in the teeth or dentition. one of. In dentistry, prosthetic treatment for repairing a tooth having a defect or the like with an artificial crown or a denture is performed, and orthodontic treatment is performed for the tooth alignment. In particular, regarding the dental prosthesis, the inventor has already disclosed a denture having both suitability according to each patient's case and aesthetics that faithfully reproduces the complex surface shape and color of natural teeth and a method for producing the same. (For example, see Patent Documents 10 and 11).

JP 11-4838 A Japanese Patent Laid-Open No. 2004-136064 JP 2003-221742 A Utility Model Registration No. 3082887 Utility model registration No. 3064654 Japanese Patent Laid-Open No. 11-128249 Japanese Utility Model Publication No. 7-43071 Japanese Utility Model Publication No. 3-80713 Japanese Utility Model Publication No. 61-88713 Japanese Patent Laid-Open No. 10-305036 JP 11-267139 A

  Among the conventional techniques described above, in daily care using oral hygiene products, an individual can easily maintain the health and cleanliness of teeth and the like, but positive effects such as tooth decoration or appearance improvement cannot be obtained. In addition, although the toothpaste etc. which contain a bleaching component and a remineralization component also exist in a commercially available oral hygiene product, the effect is low and lacks in immediate effect and sustainability.

  On the other hand, even the artificial tooth decoration method has the following problems in technical and practical aspects.

  That is, in the decoration method 1 (Patent Document 1), since jewelry such as jewelry is directly embedded in the teeth, even a skilled practitioner can accurately proceed with the detailed work from the drilling of the teeth to the embedding of the jewelry. It takes considerable skill and time, and the physical burden on the user is heavy during this period. In other words, if this method 1 is used to embed jewelry in the denture being manufactured, the resistance to drilling holes in healthy natural teeth that have no problem in real life is extremely strong. In addition, the applicable teeth are limited depending on the size and shape of the jewelry to be embedded, and it is not easy to change the jewelry or fill the hole after the treatment.

  On the other hand, the decoration method 3 (Patent Documents 2 to 8) for attaching the decorative body to the tooth surface with an adhesive does not require direct and large-scale processing on the teeth as in the decoration method 1, but still has various problems. Can be pointed out. First, the adhesive used in the decoration method 3 has a high adhesive strength in a constantly moist oral cavity in order to prevent accidental ingestion due to inadvertent dropping of the decorative body, under the condition that the adhesive is not toxic to the human body. You must choose a special one that is sustainable. Moreover, in order to fully exhibit the desired adhesive strength, not only the compatibility with the decorative body material, but also the teeth before bonding need to be pretreated, and after removing plaque etc. by brushing, for example acrylic Troubles such as cleaning the tooth surface with an acid-based liquid cleaner occur. In addition, when performing the bonding work by an individual, it is in a narrow oral cavity that is inherently difficult to work, and is forced to work while looking at the mirror, and it is easy to take time to position the decorative body. If improper positioning is performed at this time, the decorative effect may be halved or the worst adverse effect may occur. It takes at least a few minutes to complete the bonding. During this time, the user keeps the mouth open and presses the decorative body against the tooth surface with fingers or an appropriate instrument. Is forced. Further, in this decoration method 3, once the decoration body has been adhered, it cannot be easily and cleanly removed by an individual, and the inconvenience is accompanied by the inconvenience of release or change of the decoration, as in the above decoration method 1.

  On the other hand, since the decoration method 4 is configured so that the decoration body can be detached, there is no problem that the decoration is fixed for a long period of time as in the decoration methods 1 and 3, but the assumption of the removable structure is not provided. As a requirement, there is a defect site in the tooth, or the teeth are perforated with rimples. However, a tooth desired to be decorated does not necessarily have a missing part, and an individual cannot perform a tooth drilling operation. Therefore, this decoration method 4 has a problem that the applicable range is extremely narrowly restricted. In addition, even if rimples are drilled in the normal part of the tooth by the hands of a professional practitioner, the physical burden on the user accompanying this is large, and there is also a risk (risk) of weakening the tooth, so it is still resistant to its application Producing a feeling is the same as the decoration method 1 described above. Further, when the decorative body is not mounted, the rimples are exposed from the tooth surface, and thus there is a contradiction such as a loss of tooth aesthetics.

  In addition, as a practical problem common to all of the conventional artificial decoration methods 1 to 4, it was pointed out that the lack of consideration for hygiene when the foundation for embedding jewelry and decorative bodies were made of resin (resin) can do. In other words, the resin is known to cause the propagation of germs in a moist environment such as the oral cavity, and even though a commercially available denture cleaner cannot be completely removed, no countermeasures are taken. It is not done. As for decorativeness, the aesthetics in the mouth consist of both teeth and gums (gingiva), but any decoration method lacks the viewpoint of total coordination of teeth and gums.

  By the way, in the case of dentistry, since prosthetic and orthodontic techniques are performed safely and with high precision by specialists, it is best to rely on the relevant medical care if there are defects or defects in the actual life of the teeth. Needless to say. In addition, according to dentistry, it is possible to technically perform a treatment only for aesthetics even for teeth that do not interfere with real life.

  However, in any case, in dentistry, suitability and occlusion according to individual cases cannot be ignored during treatment, and therefore, while performing dental treatment with teeth and gums with instruments and drugs, It fulfills its mission as a medical practice through repeated trials and corrections of dentures. In other words, according to dentistry, for the purpose of aesthetics of teeth only, even if the discolored teeth are decolored, the missing teeth are repaired, or the tooth alignment is corrected, the user from diagnosis to treatment Time and physical burden, and also the cost burden. Since dental care is a medical practice in the first place, it should be adopted as a cosmetic method for routinely changing the aesthetics and decoration of teeth according to the mood of the day, TPO, etc., as with normal face makeup. Is not realistic.

  As described above, taking a look at the prior art as a whole, daily care cannot be effective in cosmetics for teeth, and it is too much to make dental care a daily cosmetic method for teeth like ordinary face makeup. Even in the artificial decoration method that is unrealistic and can be said to be an intermediate means, there are unsolved parts in both technical and practical aspects in order to implement the conventional decoration methods 1 to 4 on an individual level. Many.

  Here, in view of the above-mentioned problems of the prior art, and in view of the reason why face makeup, nail art, etc. are widely used as daily cosmetics and as an industry, safety and hygiene are first ensured for dental cosmetics. It must be free from physical risks such as dental surgery. In addition, a certain cosmetic effect can be obtained, and the time, physical and cost burden associated with this must be comparable to general cosmetic methods. Under these basic conditions, it is necessary to enhance the wearability and feeling of use so that the decoration effect can be confirmed in advance and the decoration contents can be easily changed, and that there should be no pain or excessive discomfort during use. Furthermore, it must be capable of responding to the tastes and trends of each person by making it rich in variations by making it highly productive.

  From this point of view, the object of the present invention is to make it easy to manufacture according to each person's intraoral aspect and desired cosmetic content, and to be highly compatible in a short time even at the individual level with the current oral conditions. Furthermore, the present invention provides a decorative tooth that can be applied to teeth with a decorative property and that can be routinely detached according to the mood of the day, TPO, and the like, and a method for manufacturing the same. It is also an object of the present invention to provide a bridge with dentistry through this decorative tooth.

  In order to achieve the above-described object, a decorative tooth according to the present invention is formed by bending a hard resin into a U-shaped band with a plurality of teeth existing between the left and right premolars in the oral cavity and the front surface of the gingiva as a part to be applied. And it forms so that the said to-be-coated part can be coat | covered. The U-shaped band-shaped surface has a desired dentition and gingival surface shape, and the back surface has a concavo-convex shape that can be in close contact with the portion to be covered. Thus, in the present invention, means is used in which the back surface is concavo-convexly engaged with at least the tooth neck and between the teeth due to the flexibility of the hard resin so as to be detachably attached to the makeup site. In addition, the tooth | gear which exists in a to-be-decorated site | part, ie, the tooth | gear coat | covered with the makeup tooth | gear based on this invention contains a denture (artificial tooth) other than a natural tooth.

  In the above-mentioned means, the decorative tooth according to the present invention has a decorative surface and a back surface as a mounting surface, and by mounting this on a makeup site in the oral cavity, The color and form, and even the tooth neck line, can be improved to the color and form desired by the person. However, it does not matter whether or not the teeth or gums of the part to be covered have defects such as discoloration or defects in appearance. In any case, by applying the cosmetic tooth according to the present invention, if there is the above-mentioned deficiency, it is concealed, and the appearance can be improved, for example, with ideal colors and teeth. Furthermore, since the decorative tooth according to the present invention is formed of a hard resin, it is easy to correct and repair the form afterwards as well as desired molding. Further, by using two colors of a crown color and a gingival color as the hard resin, the surface dentition portion can be a crown color, and the surface gingival portion can be a gingival color, so that the color tone can be highly aesthetic.

  Furthermore, by fixing the decorative member on the decorative surface, it is possible to positively decorate the oral cavity at the same time as improving the above-described appearance. Here, the decorative member can be selected from shapes and colors according to personal preferences, etc., and the material is conventional, such as jewels, precious metals, glass, resin, paper, cloth, photographs, etc., assuming that there is no effect on the human body. A well-known thing can be employ | adopted.

  Moreover, by sticking a transparent resin laminate sheet on the surface, it is possible to know the replacement timing of the decorative tooth according to the present invention, using as a guide the decrease (dullness) in the permeability of the sheet. In other words, the resin (resin) can become a nest of miscellaneous bacteria due to its water absorption and the like, but in this case, since the laminate sheet starts to dull, it is possible to avoid wearing unsanitary. Furthermore, by sticking the laminate sheet so as to cover the decorative member, it is possible to prevent the decorative member from falling off and to reliably know the decrease in the permeability of the laminated sheet due to a decrease in the decorative effect such as the brightness of the decorative member. Can do.

  On the other hand, the back surface of the decorative tooth according to the present invention is formed as an uneven shape that reproduces the intraoral aspect of each user as a mounting surface for the part to be covered. Moreover, since the uneven | corrugated shape can be closely_contact | adhered in a press-contact state with respect to the tooth | gear and gingiva front surface to cover | cover by the moderate clamp | tightening feeling which the flexibility of hard resin brings, it is excellent in compatibility. Furthermore, since the back surface is unevenly engaged with at least the tooth neck and the teeth of the part to be decorated, such as a three-dimensional uneven engagement, the cosmetic tooth according to the present invention is wobbled or inadvertent. It can be attached to the part to be dressed without falling off. Further, by bending the decorative tooth according to the present invention so that the U-shape is slightly expanded against the tightening feeling, the concave-convex engagement is released, and the decorative tooth according to the present invention is removed from the oral cavity. Can do. Further, since the tooth neck portion including at least the adjacent portion of the tooth on the back surface is formed of a flexible resin, there is no pain or excessive discomfort at the time of attachment / detachment due to a buffering action against the movement of each tooth. The resin having flexibility in the present invention refers to a resin that is between objects and has a cushioning (buffering) action by deforming following the fluctuation of the object, and necessarily means elastic deformation / plastic deformation. is not. That is, in the present invention, any object may be used as long as it deforms following the delicate movement of the teeth. Moreover, the application back surface of the resin having flexibility, that is, the cervical part including the adjacent part of the tooth, refers to the boundary from the tooth to the gingiva to the cervical part.

  By the way, the shape of the mounting surface on the back is unique to each person. Once an impression of the oral form is taken, the impression type is saved, and only the surface (decorative surface) is changed thereafter. This makes it possible to make decorative teeth. In addition, since the surface can be patterned to some extent, if a mold is prepared for a plurality of pattern patterns, it is possible to produce a cosmetic tooth suitable for each person's wishes by combining with the impression mold. Can be done easily. And by having a plurality of decorative teeth with different surface forms and decorative contents, it is possible to make cosmetics on a daily basis according to the mood, TPO, etc. of the day.

  That is, in order to manufacture the decorative tooth according to the present invention, a plurality of teeth existing between the left and right premolars and a male mold in which the front shape of the gingiva is marked, and a desired dentition and the front shape of the gingiva are marked. It can be realized by a step of injecting a hard resin into a cavity of a mold constituted by a female mold, a step of curing the hard resin in the cavity, and a step of releasing after the curing. In addition, as a method of manufacturing the cosmetic tooth, a hard resin of two colors of a crown color and a gingival color is injected into the cavity of the mold, or the tooth neck marking portion including at least the adjacent portion of the male mold is made flexible. The hard resin and the resin having flexibility are integrated, or a decorative member is disposed on the female dentition marking part, and the decorative member is integrally fixed to the hard resin after curing. Alternatively, each means such as disposing a transparent resin laminate sheet on the female dentition marking part, or arranging the laminate sheet on the female dentition marking part so as to cover the decorative member is selectively used.

  In addition, the coverage (covered part) by the cosmetic tooth which concerns on this invention does not necessarily need to be all the several teeth which exist between right and left premolars. That is, for some teeth, if the person does not want to actively improve aesthetics or make up with a decorative member, or because it is, for example, a denture, the thickness increases if the cosmetic tooth according to the present invention is applied, In the case where the above-mentioned dental symptom is promoted and the mouth becomes unnatural, it may be an aspect of covering a part except for such teeth. However, even with this partial coating, the gingival portion covers the entire space between the left and right premolars. This is because if the gingival part is partially covered, the decorative tooth according to the present invention may not be formed into a continuous U-band shape. And in the case of the said partial coating, the decorative tooth which concerns on this invention is comprised in the aspect which lost the part which exposes a user's own tooth | gear. On the other hand, if there is a missing tooth between the left and right premolars, regardless of whether it is cervical or cervical, with regard to the missing part, unless there is a special reason such as not wishing to be aesthetically or cosmetically, In principle, a surface (decorative surface) for concealing this is constructed. This is because the purpose of the present invention is to improve the intraoral morphology. However, since there is no uneven surface to be brought into close contact / engagement with the back surface of the defect site, the uneven shape on the back surface can be omitted.

  As described above, according to the present invention, the surface can be configured in an ideal color, tooth arrangement, or a form that the person desires separately. For example, a missing or discolored tooth has a natural color and form, or has been retracted. The gingiva can be brought into a normal position and the cervical line can be improved at the same time, and an appropriate decorative member can be provided on the surface, so that the desired tooth cosmetic can be easily performed. In addition, the back surface is in close contact with the part to be covered and has good compatibility, and is formed of a flexible resin, so that there is no pain or excessive discomfort during desorption. In addition, since the decorative tooth according to the present invention is detachably attached to the part to be covered with at least the back surface of the tooth neck and the interdental engagement due to the flexibility of the hard resin, the adhesive tooth or the rimple is used. As in the prior art having a fitting structure such as a concave-convex fitting, the cosmetic tooth according to the present invention can be easily detached in a short time on an individual level without any special treatment or time and physical burden. Can do. In addition, once the back surface shape is determined by taking an impression of the user's intraoral morphology, the user can then select the user's favorite one from the sample etc. It is possible to improve the appearance and decoration of teeth according to your preference. Furthermore, since the decorative tooth according to the present invention is molded from a hard resin, it can be manufactured at low cost by a conventional resin molding technique, and post-correction and repair are easy. Accordingly, it is possible to confirm the suitability of the details and the decoration effect by temporary attachment or trial fit. If there is a problem with the suitability or the decoration content at this time, the portion can be easily corrected or changed. Furthermore, in the case where a transparent resin laminate sheet is attached to the surface, the replacement time of the decorative tooth according to the present invention can be known by the decrease in the permeability of the sheet, and the decorative tooth that is also good in terms of hygiene It can be. Furthermore, in the case where the decorative member is coated with a laminate sheet, the decorative member can be prevented from falling off, and a decrease in the permeability of the laminate sheet can be easily determined from the gloss of the decorative member. Furthermore, since the decorative tooth according to the present invention is mounted on the front surfaces of the teeth and gums, it does not affect the occlusion at all and is safe.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows an upper jaw model of a user who has taken an impression beforehand with the inventor as a user when applying the decorative tooth according to the present invention. That is, the user's intraoral aspect assumes that the right side incisor B has no cervical defect in the upper jaw and that the right first premolar D has a prosthetic treatment with a metal crown. The user himself wants to improve aesthetics at least with respect to the defect site and the metal crown. At the same time, suppose that he wishes to make a decoration with jewelry as far as he can see when talking or smiling. On the other hand, for the central incisor A, it is assumed that neither the left or right side is desired to be aesthetic or cosmetic. In addition, if the part names in the oral cavity are listed using the same figure, A is a central incisor, B is a side incisor, C is a canine, D is a first premolar, E is a second premolar, and F is It is a gingiva, and for each tooth, G is a crown, H is a tooth neck, and I is an interdental.

  With respect to the upper jaw example of the above aspect, the decorative tooth 10 according to the present embodiment has left and right central incisors A among teeth existing between the left and right second premolars E and E as shown in FIG. -It has the form which coat | covers the front surface as a to-be-decorated part regarding all the gingiva between several teeth (eight) except A, and the 2nd premolar tooth E * E. That is, as an overall shape, it exhibits a U-shaped band shape (horse-shoe shape) formed by bending a hard resin. More specifically, in the covering range, the gingiva part 1 imitating the desired surface shape of the gingiva, and the continuous surface shape imitating the desired second premolar, first premolar, canine and side incisors. The dentition part 2 to be configured constitutes a decorative surface on the surface. Here, the gingival part 1 is molded from a gingival-colored hard resin, and the dentition part 2 is molded from a crown-colored hard resin. That is, in this embodiment, when molding the decorative tooth 10, two colors of hard resin of gingival color and crown color are used. Further, in this decorative tooth 10, light purple cubic zirconia is fixed as a decorative member 3 in a portion corresponding to the central incisor of the tooth row portion 2. Furthermore, the decorative member 3 is covered with a thin laminate sheet 4 made of a transparent resin.

  In addition, in this embodiment, since importance was attached to aesthetic improvement, the surface (decorative surface) was configured based on an ideal tooth arrangement, but the surface configuration standard is not limited to this. At the same time, it is not necessary for the surface to faithfully reproduce the user's oral form. For example, for the purpose of disguise by disguise or playfulness, it is possible to change the size and angle of some teeth according to the purpose of use so as to have a form like a protruding tooth. In any case, the surface in the present invention can be selected from various forms according to the desire of the person. Also, the color tone of the dentition part 2 of the gingival part 1 is the same, and using two colors of gingival color and crown color is the most natural finish, but it is not necessarily limited to two colors, By using a multicolored hard resin, it is possible to set the color tone closer to that of natural teeth or natural gingiva. Furthermore, by replacing a part of the hard resin with a highly functional material such as ceramic or composite resin, a cosmetic tooth with higher aesthetics can be obtained.

  On the other hand, the back surface of the decorative tooth 10 is obtained by taking an impression from a user's intraoral aspect and reproducing it faithfully. Specifically, as shown in FIG. 3, for each tooth of the first and second premolars D, E, canine C, and lateral incisor B in the covering range of the decorative tooth 10, its crown, neck, A concave-convex mounting surface that can be closely contacted between the teeth and the gingiva is formed. According to this configuration, the up and down direction of the back surface is formed in a substantially concave shape with the tooth neck as a boundary, the left and right direction is formed in a substantially convex shape between the teeth, and a complex uneven shape is formed by the gingiva. The entire back surface can be made of a hard resin, but at least the close contact part with the gingiva (including interdental papilla) is molded with a resin having flexibility, so that pain or excessive wear is caused. It is preferable because it can alleviate or eliminate the uncomfortable feeling. At this time, although the color of the resin having flexibility is not limited, it is preferable to avoid the resin that transmits the color of the elastic resin as viewed from the surface, and as a result, loses the aesthetics and decoration effect of the surface.

  According to the cosmetic tooth 10 according to the present embodiment, while slightly expanding the U-shaped band-shaped cosmetic tooth, it is inserted into the oral cavity from the front or side surface of the mouth, and the back surface is brought into close contact with the part to be decorated, It is mounted by engaging the concave and convex portions at least about the tooth neck and between the teeth. In other words, by releasing the expanded force at the time of mounting, the decorative teeth return to the U-shape with the original curvature due to the shape restoring force of the hard resin, and easily fall off by the uneven engagement with a moderate tightening feeling. It is attached to the part to be covered to the extent that it does not. In this way, it is possible to match the cervical, interdental, and even gingiva as in the case of the present cosmetic tooth 10 rather than the shape of the irregularities on the back surface that simply matches the crown. As a result, it is possible to prevent the cosmetic tooth 10 from wobbling or inadvertently falling off. Then, after mounting, according to the surface shape of the decorative tooth 10, in this embodiment, the missing right side incisor B is disguised, and the metal crown of the right first premolar D is concealed. The shape and color of the teeth and gums in the covering range) can be made highly aesthetic. At that time, the interior of the oral cavity can be positively decorated by the decorative member 3.

  In addition, according to the trial experiment of the cosmetic tooth 10 by the present inventor, the cosmetic tooth 10 did not wobble or come off in daily life such as conversation. However, the present cosmetic tooth 10 may come off when eating a very hard object or an adhesive such as gum. However, the main purpose of the cosmetic tooth according to the present invention is to improve the appearance and decoration of the oral cavity on a daily basis, and not to improve the occlusion. Therefore, omission during mastication is not a problem. Further, in the case of long-term use (in the case of this embodiment, use in about two months and about 800 hours), the laminate sheet 4 covering the decorative member 3 on the surface is dull, and the decorative effect of the decorative member 3 is reduced. . However, the dullness of the laminate sheet 4 is due to the growth of various germs, and if this cosmetic tooth 10 is stopped using this as a guide, hygiene in the oral cavity will not be deteriorated. In addition, over time, the flexibility of the hard resin has decreased, and the tightening feeling at the time of mounting has also decreased, but in this case as well, it is easy for the user to perceive it as an uncomfortable feeling at the time of mounting. By using the cosmetic tooth 10 as a guideline, safety in the oral cavity is maintained.

  Then, the manufacturing method of the cosmetic tooth based on this invention is demonstrated according to FIG. First, FIG. 4A shows a manufacturing process of the mold 20, and in this process, two molds divided into a female mold 21 and a male mold 22 are manufactured. The female mold 21 is for forming the surface shape (decorative surface) of the decorative teeth. For example, the impression mold can be obtained from the front surface shape of the ideal dentition model 23 on the lip side and the cheek side. Specifically, it can be manufactured by using, for example, gypsum using a conventional lost wax method in a dental technician. The impression mold for manufacturing the female mold 21 is not limited to the ideal dentition model 23, and an impression mold in a form desired by the person can be adopted as described above. On the other hand, the male mold 22 is for forming the back surface shape (mounting surface) of the decorative tooth, and the impression of the user's own oral cavity (the front surface shape of the teeth and gingiva on the lip side and cheek side) is marked. The die 24 can be used and manufactured by the lost wax method in the same manner as the female die. Moreover, a quick-drying gypsum can be used for a raw material.

  Next, FIG. 4B shows a process of injecting and arranging the material into the cavity of the mold 20 in which the divided female mold 21 and male mold 22 are combined. Specifically, first, a laminate sheet 25 made of a transparent resin, a decorative layer 26 formed in a desired shape and color by mixing seals and lamé, etc. are arranged on the male mold 22 before the uniting, and the tooth in the viscosity state is placed thereon. Two hard resins 27 and 28 of crown color and gum color are injected. In addition, a resin 29 having flexibility is embedded in the tooth neck portion including the adjacent portion of the teeth of the male mold 22. For convenience of explanation, the drawing shows a state in which the resin 29 having flexibility is built up on the tooth neck portion including the adjacent portion of the tooth, but actually, a smaller amount of resin is embedded. Next, when the arrangement and filling of the material with respect to the male mold 22 and the female mold 21 are completed, the male mold 22 and the female mold 21 are merged, and the mold 20 is put into a pressure pot (not shown), and the viscosity state The hard resins 27 and 28 are subjected to pressure polymerization. At this time, if there is a difference in polymerization time between the hard resins 27 and 28 and the flexible resin 29, the resin having the longer polymerization time is injected or embedded first, It is preferable to adjust the polymerization completion time of each. In this embodiment, the two-color hard resins 27 and 28 are made of a pressure (polymerization) molding method using an injection type resin used in dental technicians. Further, these two-color injection type resins are selected from those having flexibility after curing. On the other hand, the resin 29 having flexibility is obtained by kneading a monomer and a polymer, and has flexibility that can be deformed even after polymerization.

  And (c) of the same figure shows the process of separating the female mold 21 and the male mold 22 again and releasing the decorative teeth after waiting for the injection type resin to harden. After the mold release, the decorative tooth according to the present invention can be obtained by performing appropriate correction such as burr removal. According to this manufacturing method, the decorative tooth 10 according to the above embodiment could be manufactured in about 2 hours.

  In addition, according to the said manufacturing method, there are two methods of providing a decorative member and a transparent resin laminate sheet for covering the surface (decorative surface). One of them is a method in which a decorative member is embedded or bonded to the surface after mold release. In addition, the decorative member is fixed and a laminate sheet is provided from the decorative member by bonding or the like. According to this method, post-decoration can be performed on the finished decorative tooth. On the other hand, in another method, a decorative member or a laminate sheet is placed on the female mold 21 first, and is combined with the male mold 22 in this state to fill the cavity with resin. According to this other method, the decorative member and the laminate sheet can be fixed to the decorative tooth with a strong sense of unity, and after the resin is cured, the decoration is already completed in the mold release step. Production can be streamlined. However, as to which method is adopted, an appropriate method may be adopted in consideration of the physical properties, size, shape, compatibility with the hard resin, and the like of the decorative member and the laminate sheet.

The perspective view which showed the intraoral aspect of the user who applies the cosmetic tooth concerning one Embodiment of this invention The perspective view which showed the surface side of the cosmetic tooth which concerns on the same embodiment The perspective view which showed the back side of the cosmetic tooth which concerns on the same embodiment Process drawing which showed the manufacturing method of the cosmetic tooth of this invention

Explanation of symbols

A Medium incisor B Side incisor C Canine D First premolar E Second premolar F Gingiva G Crown H Dental neck I Interdental 1 Gingival part 2 Dental part 3 Decorative member 4 Laminated sheet 10 made of transparent resin Teeth 20 Type 21 Female type 22 Male type 23 Ideal dentition model 24 Impression type 25 in which the user's intraoral aspect is marked Laminated sheet 26 made of transparent resin Decorative layer 27 Injection resin 28 with crown color Infusion of gingival color Resin 29 Flexible resin

Claims (12)

The front surface of a plurality of teeth and gingiva existing between the left and right premolars in the oral cavity is used as a part to be covered, and the surface to be covered is formed by bending a hard resin into a U-shaped band shape, and its surface Is the surface shape of the desired dentition and gingiva, while the back surface is a concavo-convex shape that can be in close contact with the part to be decorated, and the back surface is engaged with at least the cervical and interdental areas by the flexibility of the hard resin. A cosmetic tooth, which is detachably attached to the part to be decorated. The cosmetic tooth according to claim 1, wherein the surface has a desired dentition and gingival color tone by a hard resin of two colors of a crown color and a gingival color. The cosmetic tooth according to claim 1 or 2, wherein a tooth neck portion including at least a portion adjacent to the tooth on the back surface is formed of a resin having flexibility. The decorative tooth according to claim 1, 2 or 3, wherein a decorative member is fixed on the surface. The decorative tooth according to any one of claims 1 to 4, wherein a transparent resin laminate sheet is adhered to the surface. The decorative tooth according to claim 5, wherein the laminate sheet is attached to the surface so as to cover the decorative member. In a cavity of a mold composed of a male mold with a plurality of teeth and gingival front shapes existing between the left and right premolars, and a female mold with a desired dentition and gingival front shapes printed A method for producing a cosmetic tooth, comprising: a step of injecting a hard resin; a step of curing the hard resin in the cavity; and a step of releasing after the curing. The method of manufacturing a cosmetic tooth according to claim 7, wherein in the step of injecting the hard resin, two colors of hard resin of a crown color and a gingival color are injected into the cavity of the mold. In the step of injecting hard resin, a resin having flexibility is embedded in a tooth neck marking portion including at least the adjacent portion of the male mold, and in the step of hardening the hard resin, the resin having flexibility and the hard resin is embedded. The manufacturing method of the cosmetic tooth of Claim 7 or 8 integrated. The decorative resin is disposed in the female dentition marking portion in the hard resin injection step, and the decorative member is integrally fixed to the hard resin after curing in the hard resin curing step. A method for producing a cosmetic tooth according to claim 9. In the step of injecting the hard resin, a transparent resin laminate sheet is disposed in the female dentition marking portion, and the laminate sheet is integrally attached to the hard resin after curing in the hardening process of the hard resin. The manufacturing method of the cosmetic tooth as described in any one of 7 to 10. The method for manufacturing a cosmetic tooth according to claim 11, wherein the laminate sheet is arranged in a female dentition marking portion so as to cover the decorative member.

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