JP2006255210A - Removable dental prosthesis structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a removable dental prosthesis structure which does not damage an adjacent tooth. <P>SOLUTION: The removable dental prosthesis structure is provided with inner and outer crown bodies 20 and 30 to be used for the oral tooth of a human body. The crown is provided with a bottom part surface 41, an outer peripheral surface 42 and a peak surface 43, a rest 44 is horizontally stretched from the part where the peak surface 43 and the outer peripheral surface 42 cross, the rest 44 is mounted on the occlusal surface of an adjacent anchor tooth (including a healthy natural tooth, an implant dental prosthesis or a dental prosthesis), and thus loads at the time of mastication and occlusion of the dental prosthesis and an upper jaw or a lower jaw facing it are dispersed. Also, the need of cutting, destroying and remaking the abutment tooth (including the healthy natural tooth, the implant dental prosthesis or a dental prosthesis) adjacent to the dental prosthesis is eliminated, and original form and function are maintained. Thus, problems caused by the conventional fixed type dental prosthesis are solved. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a removable denture structure that can be applied to a natural tooth or implant, and in particular, a left and / or right side adjacent to the natural tooth or implant to be treated, provided with a rest on one or both sides of the removable denture. To be placed on the occlusal surface of an abutment tooth (including healthy natural teeth, implant dentures or dentures), thereby eliminating the need to cut adjacent healthy natural teeth or destroying existing implant dentures or dentures In addition, the denture is placed on the adjacent natural tooth or implant denture, or the occlusal surface of the denture so that the occlusal pressure during mastication can be shared on average, and the use of the denture The present invention relates to a removable denture structure that can extend the life.

At present, dentures performed by a dentist in the treatment of a patient's natural teeth cannot be removed after being mounted and fixed on the patient's natural teeth, and are limited to the fixed denture region.
As shown in FIG. 1, a known fixed denture structure is first treated by a dentist in a situation where the patient has no missing teeth or a patient's natural teeth N have already been extracted as shown in FIG. After the upper part of the natural abutment tooth 10 having been completed is cut into the shape of the abutment part 11, the inside is recessed based on the outer shape of the abutment part 11, and the metal can adhere to the outer surface of the abutment part 11 A manufactured outer crown body 30 is produced, and finally, the exterior of the outer crown body 30 is covered with the appearance of the dentures t and t ′. Here, before attaching the dentures t and t ′ having the outer crown body 30 to the natural abutment tooth 10, the adhesive C must first be injected into the inner peripheral surface of the outer crown body 30. Therefore, after the dentures t and t ′ are put on the abutment portion 11 of the upper stage portion of the natural abutment tooth 10, a force is applied to compress the dentures t and t ′ and crimping to the abutment portion 11 of the natural abutment tooth 10. When the contact is formed and the adhesive C is solidified, the dentures t and t ′ are fixedly attached to the abutment portion 11 of the natural abutment tooth 10 and do not leave the abutment portion 11 of the natural abutment tooth 10. .

However, a drawback of such fixed dentures t and t 'is that the patient cannot remove the dentures t and t' by himself and thoroughly clean them, and therefore such fixed dentures t and t '. The gap δ1 between the root of the tooth and the adjacent healthy natural tooth N tends to form a closed space and form a blind spot for cleaning. Over time, the surrounding gingival tissue is infected with bacteria, and the natural support Often, the base teeth 10 and the healthy natural teeth N will have serious consequences that must be extracted in the future.
In addition, the fixed denture t ′ shown in FIG. 2 supports the denture t ′ having three occlusal areas by the abutment portion 11 of the two natural abutments 10 over a long period of time, and is removed by the patient himself / herself. Since the two natural abutment teeth 10 cannot be rested, the two natural abutment teeth 10 continue to bear the three occlusal forces and become excessively fatigued, and the periodontium around the natural abutment tooth 10 Overworked inflammatory phenomenon appears in tissues (including gingiva, periodontal ligament, and alveolar bone), which has serious consequences that natural abutment 10 and healthy natural tooth N must be extracted in the future.
JP 2004-321645 A

It is an object to provide a removable denture structure that solves the above-mentioned drawbacks of known fixed dentures.

The present invention relates to a removable denture structure, comprising an inner crown and fixing on a natural abutment or an abutment of an artificial abutment, and comprising a denture having an outer crown, The outer crown body and the inner crown body are configured to be detachably mounted and connected, the rest is extended from the place where the top surface and the outer peripheral surface of the denture intersect, and the denture is connected to the inner crown body of the natural abutment When mounted on top, the denture rest is arranged on the apex surface of the adjacent abutment tooth.
Further, the denture is characterized in that it is provided with a block portion for prosthesis of the missing tooth portion.
The denture rest is arranged on an occlusal surface of an adjacent healthy tooth, implant denture or denture.
The denture rest is configured to be placed on a fixed point of the outline of an adjacent healthy tooth, implant denture or denture.
The denture rest is provided as a side rest and is placed on the side wall of an adjacent healthy tooth, implant denture or denture.

  The present invention provides a removable denture structure, comprising a denture t having an inner crown body and an outer crown body, the inner crown body fixedly mounted on the abutment portion of the natural abutment tooth, and a natural abutment tooth The denture is structured so that it can be detachably connected between the outer crown and the inner crown so that it can be freely mounted on the natural abutment. Allow to be removed. When the patient cleans the oral cavity, the patient can remove the removable denture, so the gap between the root of the removable denture and the surrounding gingival tissue does not become a blind spot for cleaning, and the natural abutment Bacterial infection of the surrounding gingival tissue is suppressed, thus avoiding the extraction of the natural abutment due to infection. In addition, because the patient can remove the removable denture, the periodontal tissue around the natural abutment (including gingiva, periodontal ligament, and alveolar bone) can be properly rested, and the natural abutment is excessive Overworking inflammation due to burden of occlusal force does not occur, natural abutment teeth are protected and the service life can be extended.

The present invention also provides a removable denture structure, which can be applied to a natural abutment or an artificial abutment, extending flat from one or both sides of the crown of the removable denture. If the rest is provided and the crown is attached to the natural abutment or artificial abutment, the rest will be on the occlusal surface of the abutment on both the left and / or right sides (including healthy natural teeth, implant dentures or dentures) Because there is no need to cut healthy natural teeth, implant dentures or dentures adjacent to the left and right, the left and right adjacent natural (healthy) teeth can retain their original shape and function, or There is no need to destroy and recreate adjacent implants or dentures.
The present invention further provides a removable denture structure applicable to a natural abutment or an artificial abutment, wherein the removable denture rests flatly from one side or both sides of the top of the crown during mastication. Reduces the occlusal pressure of removable dentures by distributing the occlusal force acting on the removable dentures on the occlusal surface of healthy or implant dentures or dentures on which rests are placed. And this can greatly extend the useful life of removable dentures.

  The present invention also provides a removable denture structure that can be applied to a natural abutment or an artificial abutment, and is mounted on a natural abutment or an artificial abutment and then adjacent to the removable denture on the left and right. The space between healthy teeth is shielded by the rest of the removable dentures, so food can be completely prevented from entering the space when biting and masticating food, avoiding physiological incompatibility Can do.

The removable denture structure of the present invention has the following advantages.
1. The removable denture of the present invention enhances the support maintenance force with the denture rest structure and avoids cutting of the healthy natural teeth adjacent to the left and right, so the left and right adjacent natural teeth keep the original shape and yesterday Or left and right adjacent implants or dentures can be avoided from being destroyed and recreated.
2. The removable denture of the present invention can be applied to natural teeth or implants, and the occlusal force acting on this removable denture during occlusal mastication is an abutment tooth (healthy tooth, implant denture or For the abutment tooth (health tooth, implant denture or denture) that supports the rest, it can receive the force only at the time of occlusion. When it is not occluded, no force is applied, and it can be adapted to the desired physiological condition to ensure its health.
3. The rest of the removable denture of the present invention is used to block the gap between adjacent healthy teeth and completely prevent food from being pressed into the toothpaste between the removable denture and healthy teeth in the vertical direction. Can maintain the health of the teeth.

  As shown in FIG. 3, the removable denture structure of the present invention can be used for a natural tooth or an implant, and includes a denture T having an inner crown body 20 and an outer crown body 30. A mounting connection structure is configured to be detachable between the outer crown body 30 and the inner crown body 20 of the denture T, so that the outer crown body 30 of the denture T can be put on the inner crown body 20. It can be attached and detached freely.

  When the removable denture of the present invention is applied to a natural abutment 10 that has caries or lesions and has been treated, the dentist first sets the upper stage of the natural abutment 10 to the shape of the abutment 11. Before the prosthesis T is combined, the adhesive C is injected into the inner peripheral surface of the inner crown body 20 and the abutment of the upper part of the natural abutment tooth 10 is prepared. When the denture T of the outer crown body 30 is mounted on the outer peripheral surface of the inner crown body 20 after the adhesive C is solidified after being put on the portion 11 and pressed and brought into contact, the mounting of the removable denture is completed. To do.

  When the patient cleans the oral cavity, the entire denture T can be removed from the inner crown body 20 on the natural abutment 10, so that the gap δ1 between the root of the denture T and the surrounding gingival tissue becomes an open space, It makes it easier for the patient to clean the residual food, avoids blind spots on cleaning, and prevents the surrounding gingival tissue from being infected with bacteria, thus protecting the natural abutment tooth 10 and having a long service life. The situation in which the natural abutment tooth 10 is extracted due to bacterial infection can also be avoided.

  As shown in FIG. 4, when the patient has an artificial abutment tooth 10 ′ implanted due to dental caries or a lesion, and the natural tooth N on one side adjacent to the artificial abutment tooth 10 ′ is missing. The connecting denture T ′ can be employed. That is, the connecting denture T ′ is provided with a prosthetic block 35 for prosthetic a portion without teeth. However, before installing the connecting denture T ′, the upper stage of the artificial abutment tooth 10 ′ must be cut into the abutment part 11 ′, and the left and right natural abutments closest to the artificial abutment tooth 10 ′. It is necessary to cut the upper stage portion of the base tooth 10 into the abutment portion 11 so that the inner crown body 20 ′ made of a metal material can be attached. When the dentist attaches the connecting denture T ′, the adhesive C is injected into the inner peripheral surface of the inner crown body 20 ′, and the abutment portion 11 of the natural abutment tooth 10 and the abutment of the artificial abutment tooth 10 ′. After covering and compressing and bonding the adhesive C, the connecting denture T ′ having the outer crown 30 ′ and the prosthetic block 35 is mounted on the outer peripheral surface of the inner crown 20 ′. To complete the installation of removable dentures.

When the patient cleans the oral cavity, the connecting denture T ′ can be removed from the inner crown body 20 ′ of the natural abutment tooth 10 and the artificial abutment tooth 10 ′, so that the root and surroundings of the removable denture T ′ can be removed. The gap δ2 between the gingival tissues can be easily cleaned, the surrounding gingival tissues can be kept clean, and there is no situation where food remains and bacteria must propagate or be extracted.
Furthermore, since the peripheral periodontal tissues (including gingiva, periodontal ligament and alveolar bone) of the natural abutment tooth 10 and the artificial abutment tooth 10 'can be appropriately rested after removing the connecting denture T', The natural abutment tooth 10 and the artificial abutment tooth 10 'overload the denture force of the denture T', which has four occlusal areas over a long period of time, avoiding inflammation due to fatigue and avoiding the natural abutment. It is possible to protect the tooth 10 and the artificial abutment tooth 10 ′ and extend the service life.

As shown in FIGS. 5 and 6, the structure of another specific example of the removable denture according to the present invention includes a denture 40 having an inner crown body 20 and an outer crown body 30, and the crown portion of the denture 40. A flat extension from one or both sides to provide a rest 44 structure and when attached to a natural or artificial abutment, the removable denture rest 44 on both sides adjacent to the natural tooth or implant being treated There is no need to cut the healthy natural teeth or implant dentures or dentures on the occlusal surface of the healthy natural teeth or implant dentures or dentures and adjacent to the left and right sides.
Therefore, with this kind of removable denture structure of the present invention, the natural tooth being treated or the healthy natural teeth on both sides adjacent to the implant can maintain their original shape and function, and the range of use is natural teeth. And implants.

  The denture 40 shown in FIG. 5 is a first embodiment of this type of removable denture structure, and the denture 40 includes a bottom surface 41, an outer peripheral surface 42, and a top surface 43, where the denture 40 is recessed from the bottom surface 41. A hole 411 in which the outer crown body 30 can be installed is provided, and the bottom edge 421 of the outer peripheral surface 42 is continuous with the bottom surface 41. The outer peripheral edge 431 of the top surface 43 is continuous with the top edge 422 of the outer peripheral surface 42, and the rest 44 is extended flat from the point where the top surface 43 and the outer peripheral surface 42 intersect.

  As shown in FIG. 6, when the dentist performs the denture 40, the adhesive C is injected into the hollow inner crown body 20 and is placed on the tooth base 11 of the upper stage of the natural abutment tooth 10, and compressed. Then, both are closely bonded. After the adhesive C is solidified, the removable denture 40 having the outer crown body 30 is placed on the outer peripheral surface of the inner crown body 20, and the rest 44 is directly on the occlusal surface H of the adjacent healthy natural tooth N. Place and complete the installation of the removable denture.

  As can be seen from the above, since it is not necessary to cut the healthy natural teeth N on both sides to form a joint support before attaching the denture 40, the natural natural teeth N can maintain their original shape and function as they are. . Further, after the denture 40 is applied, the rest 44 is placed directly on the occlusal surface H of the adjacent healthy natural tooth N or the fixed point G of the outline of the healthy natural tooth N, so that the occlusal force is rested every time the denture 40 is bitten and masticated. In addition to being able to significantly reduce the occlusal load on the denture 40 and to completely block the gap with the adjacent healthy natural tooth N, the food is perpendicular to the gap. Physiological discomfort caused by being caught in the body can be eradicated.

  The denture 50 shown in FIG. 7 is a second embodiment of this type of removable denture structure according to the present invention. The denture 50 includes a bottom surface 51, an outer peripheral surface 52, and a top surface 53. One hole is provided with a hole 511 in which the outer crown body 30 can be inserted and installed, and the other hole is provided in the block portion 512, which can be used for prosthesis of the extracted missing portion. The bottom edge 521 of the outer peripheral surface 52 is continuous with the bottom surface 51. The outer peripheral edge 531 of the top surface 53 and the top edge 522 of the outer peripheral surface 52 are continuous, and the rest extends flatly from the point where the top surface 53 and the outer peripheral surface 52 intersect.

  As shown in FIG. 8, when performing the denture 50, the adhesive C is first injected into the hollow inner crown body 20, covered on the abutment 11 of the upper stage of the natural abutment 10, and compressed. After the adhesive joint C is solidified and the adhesive C is solidified, the denture 50 on which the outer crown body 30 is installed is mounted on the outer peripheral surface of the inner crown body 20, and the rest 54 is placed on the top surface of the adjacent healthy natural tooth N. Place directly to complete the installation of removable dentures.

As can be seen from the above, since it is not necessary to cut the healthy natural teeth N on both sides to form a joint support before attaching the denture 50, this healthy natural tooth N can maintain its original shape and function as it is. .
In addition, the block portion 512 provided on the bottom surface 51 of the denture 50 can be a prosthesis when there is a defect at an adjacent position. Furthermore, since the rest 54 is directly placed on the occlusal surface H of the adjacent healthy natural tooth N or the top surface of the healthy natural tooth N, the adjacent healthy natural tooth on which the occlusal force rests on the rest 54 every time the denture 50 bites and chews. Dispersed on N, significantly reduces the occlusal load on the denture 50, and can completely block the gap with the adjacent healthy natural tooth N, so that the physiological discomfort caused by food caught vertically in the gap Can be eradicated.

  As shown in FIG. 9, the denture 50 of the present invention can also be used for the artificial abutment tooth 10 '. Similarly, it is not necessary to cut the adjacent healthy natural tooth N before performing the denture 50, and the effect thereof is the natural fulcrum. This is the same as in the case of the base tooth 10.

  The removable denture 40 'shown in FIGS. 10 and 11 is a third embodiment of this type of removable denture structure of the present invention, and the rest of the removable denture 40' is formed on the side rest 44 '. The side rest 44 'of the removable denture 40' can be connected to the side tooth wall K of the adjacent natural abutment 10 (including healthy natural teeth N, implant dentures 10 ', and dentures 40'). Thus, it is not necessary to place on the occlusal surface H of the natural abutment tooth 10.

It is the cross-sectional schematic of the structure of a well-known fixed denture, and the mounting fixation on the natural abutment tooth in a state in which a patient is not missing. FIG. 5 is a schematic cross-sectional view of another known fixed denture structure and mounting fixation on a natural abutment tooth in a state where a patient's natural tooth N is missing. It is the cross-sectional schematic of the structure of the removable denture of this invention, and the detachable mounting | wearing on a natural abutment tooth. It is the cross-sectional schematic of the structure of another removable denture of this invention, and the detachable mounting | wearing on an artificial abutment tooth. 1 is a schematic structural cross-sectional view of a first embodiment of a removable denture having a rest of the present invention. FIG. 6 is a schematic cross-sectional view of the removable attachment of the removable denture shown in FIG. 5 on the natural abutment tooth. It is a structural cross-sectional schematic of the 2nd Example of the removable denture provided with the rest of this invention. FIG. 8 is a schematic cross-sectional view of the removable attachment of the removable denture shown in FIG. 7 on the natural abutment. FIG. 8 is a schematic sectional view of the removable attachment of the removable denture shown in FIG. 7 on the artificial abutment tooth. It is a top view by which the 3rd Example of a removable denture provided with the rest of this invention and the rest rests on the side tooth wall of a natural abutment tooth. It is AA sectional drawing of FIG.

Explanation of symbols

10 natural abutment tooth 10 'artificial abutment tooth 11, 11' abutment part 20, 20 'inner crown body 30, 30' outer crown body 35 prosthetic block 41, 51 bottom surface 40, 50, T, T 'removable Prosthetic teeth 42, 52 Peripheral surfaces 43, 53 Top surface 44, 54 Rest 44 'Rest 411, 511 Hole 421, 521 Bottom edge 422, 522 Top edge 431, 531 Outer peripheral edge 512 Block C Adhesive G Outline contour fixed point H Occlusal Surface K Side tooth wall N Healthy natural tooth t, t 'Dentures δ1, δ2

Claims (5)

In a removable denture structure, an inner crown is provided and fixed on a natural or artificial abutment abutment, and a denture having an outer crown is provided, and the outer crown of the denture And a structure that is detachably mounted between the inner crown body and the inner crown body,
When the rest is extended from the point where the top surface of the denture and the outer peripheral side intersect, and the denture is mounted on the inner crown of the natural abutment, the rest of the denture is placed on the top surface of the adjacent abutment A removable denture structure, characterized by comprising:   2. The removable denture structure according to claim 1, wherein the denture is provided with a block portion for prosthesis of a missing tooth portion.   The removable denture structure according to claim 1 or 2, wherein the rest of the denture is arranged on an occlusal surface of an adjacent healthy tooth, implant denture or denture.   3. The removable denture structure according to claim 1 or 2, wherein the denture rest is placed on a fixed point of the outline of an adjacent healthy tooth, implant denture or denture. The removable denture structure according to claim 1 or 2, wherein the denture rest is provided as a side rest and is placed on a side wall of an adjacent healthy tooth, implant denture or denture.

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