JP2022092101A - Denture and mounting attachment thereof - Google Patents

Abstract

To provide a denture providing a denture wearer with excellent fit and comfortable bite during meal, and a mounting attachment of the denture.SOLUTION: A denture base includes an abutment tooth storage recess part 150 at a bottom surface thereof, and further first and second latch engagement parts 110 and 120 are respectively provided at a position facing an inner peripheral surface of the abutment tooth storage recess part. An attachment is attached to a residual root part for forming the abutment tooth 30, and includes a denture engagement projection part 200 including first and second engagement force receiving parts 210 and 220 respectively engaging with the first and second latch engagement parts, formed on a denture wearer. The mounting state of the denture on the abutment tooth is retained by mutually substantially equal elastic pressing force of the first and second latch engagement parts respectively applied to the first and second engagement receiving parts from both sides of the denture engagement projection part and by adhesion force generated when the denture base of the denture closely adhere to gingiva.SELECTED DRAWING: Figure 1

Description

The present invention relates to a denture and its attachment.

With the recent aging society, if the tooth decay is left unattended for many years, the condition of the crown deteriorates, and eventually the crown collapses. The same applies to the case where the dental caries generated inside gradually progresses and worsens considerably after many years have passed since the dental caries was treated long ago and covered with a metal crown.

When such a state is reached, it is conceivable to remove the crown portion to leave only the root and attach a conventionally known denture using this as an abutment tooth for the time being.

However, when such dentures are attached, it is essential to use a clasp (hook) for the portion of the abutment tooth that supports the dentures. Therefore, when you open your mouth, you can see the metal part of the metal clasp from the outside, for example, you can see at a glance that you are wearing dentures from the other side during a conversation, and the metal part of the clasp is conspicuously aesthetic. Not preferable.

On the other hand, if the tooth is left unextracted, the food cannot be chewed sufficiently, and if it is swallowed as it is, it will put a burden on the digestive organs and damage the health. Therefore, in recent years, a procedure for attaching an artificial tooth to a portion where a tooth has been removed by an implant has been widely performed (see, for example, Patent Document 1).

Japanese Patent No. 6383957

When treating implants, it is of course necessary to implant one implant for each extraction site. And since the cost per implant is very high, if the number of missing teeth is large and the implant is used for all of those defective parts, the total cost will increase considerably. Also, as the jawbone contracts with age (because it becomes thinner), the suitable sites for implant placement tend to be limited as the age increases.

An object of the present invention is to provide a denture and its attachment attachment that can be easily attached to and detached from the abutment tooth and can give the denture wearer an excellent wearing feeling and a comfortable biting feeling during meals. ..

In order to solve the above-mentioned problems, the denture according to claim 1 of the present invention and its attachment attachment are
A denture having at least two dentures arranged side by side and having an elongated denture base with the plurality of dentures fixed at the top, and a denture having an attachment for attaching the denture to an abutment tooth. In its mounting attachment
The denture is provided with a bottomed abutment tooth accommodating recess for inserting and holding the abutment tooth at a predetermined position in the longitudinal direction on the bottom surface side in contact with the gingiva of the denture base, and the abutment tooth accommodating. A first latch engaging portion and a second latch engaging portion are provided at opposite positions on the inner peripheral surface of the recessed portion.
The first attachment is attached to a residual root portion to form the abutment tooth and engages the denture wearer with the first latch engaging portion and the second latch engaging portion, respectively. It is composed of a denture engaging protrusion on which an engaging force receiving portion and the second engaging force receiving portion are formed, and a fixing member for fixing the denture engaging protrusion to the residual root portion.
The abutment tooth is formed by attaching the prosthesis engaging protrusion to the residual root portion using the fixing member.
In a state where the denture is attached to the abutment tooth, the first engaging force receiving portion and the second engaging receiving portion act on the first engaging force receiving portion from both sides of the protruding portion for engaging the denture. The first elastic pressing force of the latch engaging portion, the second elastic pressing force of the second latch engaging portion, and the adhesion force generated when the denture base of the denture is in close contact with the gingiva of the denture. It is characterized by maintaining the mounting state with respect to the abutment tooth.

Further, the denture and its attachment attachment according to claim 2 of the present invention are the denture and its attachment attachment according to claim 1.
The first engaging force receiving portion and the second engaging force receiving portion are formed as engaging recesses at positions facing each other in the circumferential direction on the peripheral surface of the denture engaging protrusion, respectively, and the denture wearer. When the denture is attached, the first latch engaging portion and the second latch engaging portion are fitted to the first engaging force receiving portion and the second engaging force receiving portion, respectively. The first latch engaging portion and the second latch engaging portion are formed by the first engaging force receiving portion when the denture wearer engages with the denture. And move away from the second engaging force receiving portion to the vicinity of the residual root portion on the peripheral surface of the denture engaging protrusion, and the first latch engaging portion according to the magnitude of the occlusal force. And the second latch engaging portion further exerts the first elastic pressing force and the second elastic pressing force on the peripheral surface of the denture engaging protrusion toward the residual root portion side. As well as being mobile,
The prosthesis engaging protrusion continues to receive the first elastic pressing force and the second elastic pressing force in a direction substantially orthogonal to the axial direction thereof and facing each other, so that the artificial tooth is engaged even during occlusion. It is characterized in that one abutment tooth supporting the prosthesis is continuously sandwiched between the first elastic pressing force and the second elastic pressing force to maintain the mounted state of the artificial tooth on the abutment tooth.

Further, the denture and its attachment attachment according to claim 3 of the present invention are the denture and its attachment attachment according to claim 1.
The first engaging force receiving portion and the second engaging receiving portion are composed of a longitudinally extending engagement region having a predetermined length in the longitudinal direction of the denture engaging protrusion.
When the prosthesis wearer occludes the prosthesis, the first elasticity that acts from the first latch engaging portion to the first engaging force receiving portion of the prosthesis engaging protrusion according to the occlusal state. The pressing force and the second elastic pressing force acting on the second engaging force receiving portion of the artificial tooth engaging protrusion from the second latch engaging portion are the first elastic pressing force and the second elastic pressing force. The position where the elastic pressing force acts is moved along the first engaging force receiving portion and the second engaging force receiving portion, and the prosthesis engaging protrusion is in a direction substantially orthogonal to the axial direction thereof. By continuing to receive the first elastic pressing force and the second elastic pressing force in the directions facing each other, one abutment tooth that supports the artificial tooth even during occlusion is referred to as the first elastic pressing force. It is characterized in that the artificial tooth is continuously sandwiched by the second elastic pressing force to maintain the mounted state of the artificial tooth on the abutment tooth.

Further, the denture and its attachment attachment according to claim 4 of the present invention are the denture and its attachment attachment according to claim 2 or 3.
When the denture wearer occludes the denture, the occlusal force generated by the occlusal force is handled by the compressive repulsive force from the gingiva generated by the entire denture base of the denture crushing the gingiva.

Further, in the denture according to claim 5 of the present invention and its attachment attachment, the abutment tooth is formed based on the residual root portion in the denture and its attachment attachment according to any one of claims 1 to 4. Instead, it is characterized by being formed on the basis of an implant placed in the jawbone.

Further, in the denture according to claim 6 of the present invention, the denture engaging protrusion according to any one of claims 1 to 4 is based on the residual root portion according to any one of claims 1 to 4. The denture according to any one of claims 1 to 4, which is detachably attached to the formed abutment tooth.

Further, in the denture according to claim 7, the denture engaging protrusion according to any one of claims 1 to 4 is removed from the abutment tooth formed based on the implant according to claim 5. The denture according to any one of claims 1 to 4, which can be mounted.

Further, any one of claims 1 to 4 in which the denture engaging protrusion according to claim 8 of the present invention can be detachably attached to the denture according to any one of claims 1 to 4. It is a protrusion for engaging a denture that covers the residual root portion in order to form the abutment tooth according to the above.

Further, the protruding portion for engaging the denture according to claim 9 of the present invention has the abutment tooth according to claim 5, wherein the denture according to any one of claims 1 to 4 can be detachably attached. A denture engaging protrusion that covers the implant to form.

According to the present invention, it is possible to provide a denture and an attachment thereof, which makes it easy to attach and detach the denture and can give the denture wearer an excellent wearing feeling and a comfortable biting feeling during meals.

FIG. 3 is a schematic side view showing a state in which a denture is attached and attached to an attachment in a partial cross section in the first embodiment of the present invention. A partial cross section of an elastic pressing unit provided with a first latch engaging portion and a second latch engaging portion as well as a recess for accommodating abutment teeth and integrated with the denture base of the denture. Schematic side view (FIG. 2 (a)), schematic bottom view (FIG. 2 (b)) of the elastic pressing unit shown in FIG. 2 (a) viewed from the bottom surface, and a recess for accommodating abutment teeth from the bottom surface of the denture base. Schematic bottom view (FIG. 2 (c)) showing only the portion, and schematic bottom view (FIG. 2 (d), FIG. 2 (FIG. 2)) showing the accommodation arrangement state of the elastic pressing unit housed in the denture base in FIG. 2 (c). A schematic end view (FIG. 2 (e)) showing the accommodation position of the elastic pressing unit accommodated in d) and the recessed portion for accommodating the abutment tooth, and the elastic pressing unit being accommodated and supported in the denture base provided with the artificial tooth. It is a schematic arrangement drawing (FIG. 2 (f)) which shows the denture accommodating recess. It is a schematic side view which shows the state before attaching the denture to the abutment tooth and the state after removing a denture from an abutment tooth by a partial cross section which concerns on 1st Embodiment of this invention. It is a schematic side view which shows the state just before the attachment to the abutment tooth of the denture and the state just after the removal from the abutment tooth of a denture which concerns on 1st Embodiment of this invention in a partial cross section. From the state shown in FIG. 1, the denture wearer occludes with a certain amount of occlusal force, and the two spheres disengage from the two sphere engaging recesses of the denture engaging protrusions and begin to move toward the residual root. It is a schematic side view which shows the state and the state just before the denture finishes the occlusion and returns to the wearing state of the abutment tooth of the denture in a partial cross section. The denture wearer further occludes with respect to the state shown in FIG. 5, and the two spheres further move from the engaging recess of the denture engaging protrusion toward the residual root, and the denture base is crushed by the gingiva. It is a schematic side view which shows the state in which the subsidence of a denture base is stopped by the compression repulsion force from the gingiva in a partial cross section. FIG. 3 is a schematic side view showing a state in which a denture is attached and attached to an attachment in a second embodiment of the present invention in a partial cross section. It is a schematic side view which shows the state which started the attachment to the abutment tooth of the denture which concerns on the 2nd Embodiment of this invention, and the state which started the removal from the abutment tooth of a denture by a partial cross section. It is a schematic side view which shows the state immediately before the denture which concerns on the 2nd Embodiment of this invention is completely attached to the abutment tooth, and the state immediately after starting the removal from the abutment tooth of a denture by a partial cross section. From the state shown in FIG. 7, the denture wearer occludes with a certain amount of occlusal force, and the two spheres begin to move toward the residual root along the two sphere engagement grooves of the denture engagement protrusion, respectively. It is a schematic side view which shows the state in a partial cross section. With respect to the state of FIG. 10, the denture wearer occludes with a large occlusal force, and the two spheres move further toward the residual root along the two sphere engaging grooves of the denture engaging protrusion, and the denture It is a schematic side view which shows the state in which the denture base is crushed by the gingiva and the subsidence of the denture base is stopped by the compression repulsive force from the gingiva. It is a schematic side view which shows the 1st modification of this invention with a partial cross section. It is a schematic side view which shows the 2nd modification of this invention with a partial cross section.

Hereinafter, embodiments of the denture and its attachment attachment according to the present invention and modified examples thereof will be described with reference to the drawings. In the following description, a drawing will be created based on a form in which the denture and its attachment attachment according to the present invention are attached to the residual root portion on the mandibular side of the mandible, and the description will be given accordingly.

Therefore, the upward, downward, and left-right directions in the drawings and sentences are defined based on the mode in which the implementation is mounted in such a form. In addition, the explanations in the following sentences and how to draw drawings are merely examples of the scope to which the present invention belongs, and various shapes and dimensions are shown as long as the effects of the present invention can be exerted. , Size and material can be changed as appropriate.

In addition, the arrangement relationship, dimensional relationship, presence / absence of gaps, etc. between the constituent elements of the drawings are slightly exaggerated and drawn with dimensional relationships different from the actual ones in order to facilitate understanding of the invention. Specifically, for example, the thickness of the gingiva in each drawing is larger than the actual size in order to facilitate understanding of the invention as compared with the recessed portion for accommodating the abutment tooth and the residual root portion constituting the abutment tooth. It is drawn exaggeratedly. Similarly, the thickness of the periodontal ligament and the relative positional relationship with the residual root portion and the gingiva are also shown schematically, unlike the actual dimensional relationship and positional relationship in order to facilitate understanding of the invention.

Based on the above, when applying the denture and its attachment attachment according to the present invention to actual dentistry, the present invention may be changed to a preferable form depending on the mounting position, mounting site, and number of artificial teeth for each denture wearer. It is natural to change it according to various actual dentistry, and it should be mentioned in advance that such various variations are also included in the scope of the present invention. Further, in the drawings, cross-sectional hatching is omitted as appropriate to facilitate understanding of the explanation.

Further, with respect to each component of each embodiment and its modified example, the equivalent component will be described with the same reference numerals even if there are some differences in shape and the like.

The denture and its attachment attachment according to the present invention include a denture having an elongated denture base in which at least two dentures are arranged side by side and a plurality of dentures are fixed to the upper part, and the denture is attached to an abutment tooth. A denture with an attachment for this and its mounting attachment.

In the present invention, premolars and molars, which are two or more artificial teeth in total, are provided on the upper part of the denture base. In the present invention, the types, number, and arrangement of premolars and molars provided in the denture base can be variously combined within the range in which the effects of the present invention can be exhibited. It can be appropriately selected according to the condition of the missing tooth around the root.

Hereinafter, the first embodiment of the present invention will be described. FIG. 1 is a schematic side view showing a state in which a denture is attached and attached to an attachment in the first embodiment of the present invention in a partial cross section.

Further, FIG. 2 is provided with a first latch engaging portion and a second latch engaging portion, and is provided with a recess for accommodating abutment teeth, and is integrated with the denture base of the denture to provide elastic pressing in the denture base. A schematic side view (FIG. 2 (a)) showing a partial cross section of the unit, a schematic bottom view (FIG. 2 (b)) of the elastic pressing unit shown in FIG. 2 (a) seen from the bottom surface, and from the bottom surface of the denture base. Schematic bottom view showing only the recessed portion for accommodating abutment teeth (FIG. 2 (c)), and schematic bottom view showing the accommodating arrangement state of the elastic pressing unit housed in the denture base in FIG. 2 (c) (FIG. 2 (C)). d), a schematic end view (FIG. 2 (e)) showing the accommodation position of the elastic pressing unit accommodated in FIG. 2 (d) and the recessed portion for accommodating the abutment tooth, and elastic pressing on the denture base provided with the artificial tooth. It is a schematic arrangement drawing (FIG. 2 (f)) which shows the recess part for accommodating a unit and accommodating an abutment tooth.

In the first embodiment of the present invention, a denture having an elongated denture base in which at least two artificial teeth are arranged side by side and a plurality of artificial teeth are fixed at the upper part, and the denture are attached to an abutment tooth. A denture with an attachment for it and its mounting attachment.

The denture 10 is provided with a bottomed abutment tooth accommodating recess 150 for inserting and holding the abutment tooth 20 at a predetermined position in the longitudinal direction on the bottom surface side in contact with the gingiva 90 of the denture base 100, and also supports the denture 10. A first latch engaging portion 110 and a second latch engaging portion 120 are provided at positions facing each other on the inner peripheral surface of the denture accommodating recess 150. Further, the upper part of the denture base 100 is provided with artificial teeth 101, 102, 103, ... Consisting of molars and premolars.

Further, the attachment is attached to the residual root portion 21 to form the abutment tooth 20, and the first engagement portion engages with the first latch engaging portion 110 and the second latch engaging portion 120 when the denture is attached. It is composed of a denture engaging protrusion 200 on which a resultant force receiving portion 210 and a second engaging force receiving portion 220 are formed, and a fixing member 250 for fixing the denture engaging protrusion 200 to the residual root portion 21.

Then, the abutment tooth 20 is formed by attaching the prosthesis engaging protrusion 200 to the residual root portion 21 by using the fixing member 250.

When the first embodiment has the above configuration, in a state where the denture 10 is attached to the abutment tooth 20, the denture engaging protruding portion 200 is sandwiched and acts on the engaging force receiving portions 210 and 220 from both sides thereof. The abutment of the denture 10 is due to the substantially equal elastic pressing force of the first latch engaging portion 110 and the second latch engaging portion 120 and the adhesion force generated when the denture base 100 of the denture 10 is in close contact with the gingiva 90. It is designed to maintain the attachment state to the teeth 20.

More specifically, in the configuration peculiar to the first embodiment of the present invention, the first engaging force receiving portion 210 and the second engaging force receiving portion 220 are respectively on the peripheral surface of the denture engaging protruding portion 200. It is formed as a latch engagement recess at positions facing each other in the circumferential direction, and when the denture wearer mounts the denture 10 on the abutment tooth 20, the first latch engagement portion 110 and the second latch engagement portion 120 are formed. , The first engaging force receiving portion 210 and the second engaging force receiving portion 220 are fitted to each other to maintain the denture mounting state.

Further, when the denture wearer engages, the first latch engaging portion 110 and the second latch engaging portion 120 are disengaged from the first engaging force receiving portion 210 and the second engaging force receiving portion 220. The first latch engaging portion 110 and the second latch engaging portion 120 are first, depending on the magnitude of the occlusal force, while moving to the vicinity of the residual root portion on the peripheral surface of the denture engaging protrusion 200. While applying the elastic pressing force and the second elastic pressing force, the denture engaging protrusion 200 can be further moved toward the residual root portion on the peripheral surface.

In this way, the denture engaging protrusion 200 continues to receive the first elastic pressing force and the second elastic pressing force that are substantially uniform in the direction substantially orthogonal to the axial direction thereof, thereby supporting the denture 10. The abutment tooth 20 is continuously sandwiched by a substantially uniform elastic pressing force, and the denture 10 can be maintained in a mounted state on the abutment tooth 20.

Then, the entire denture base of the denture 10 receives the compressive repulsive force from the gingiva 90 generated by crushing the gingiva 90. Further, the denture wearer further occludes, and the two spherical bodies described later further move from the engaging force receiving portions 210 and 220 of the denture engaging protrusion 200 toward the residual root portion 21, and the denture base 100 moves the gingiva 90. The compression repulsive force from the gingiva 90 generated by crushing finally stops the subsidence of the denture base 100.

Hereinafter, the detailed structures of the latch engaging portions 110 and 120 of the first embodiment, which form an important part in the present invention, will be described. The first latch engaging portion 110 and the second latch engaging portion 120 are engaged units 130 having an abutment tooth accommodating recess 150 formed on the bottom surface of the central portion and integrally arranged with the denture base 100. At a predetermined position in the longitudinal direction of the recessed portion on the inner peripheral surface in the abutment tooth engaging recessed portion, one of the ends thereof is arranged so as to face each other in an exposed state. It should be added that such a form of the engaging unit 130 is merely an example of the configuration considered in the present invention.

The first and second latch engaging portions 110 and 120 were received by the first and second cylinders 111 and 121 as housings and one ends of the first and second cylinders 111 and 121, respectively. Disk-shaped first and second spring holding plates 112, 122, and first and second coil springs 113, which are housed inside the first and second cylinders 111, 121 and generate elastic compressive force. It has 123 and first and second spheres 114, 124 provided at the end opposite to the end to which the first and second spring holding plates 112, 122 abut.

Then, the tips of the first and second sphere side ends of the first and second cylinders 111 and 121 are slightly closer to the tips than the outer shapes of the first and second spheres 114 and 124. The diameter is reduced to form tapered inner flange portions 111t, 121t as first and second sphere pop-out stoppers, and approximately half of the first and second spheres 114, 124 are the first and first. The first and second spheres 114 and 124 are held by the first and second cylinders 111 and 121 in a state of protruding from the ends of the cylinders 111 and 121 of 2.

The first and second coil springs 113 and 123 have the first and second spherical bodies 114 and 124 as a whole from the tapered inner flange portions 111t and 121t at the ends of the first and second cylindrical bodies 111 and 121. It is compressed to about half of the pressure so as to generate an elastic pressing force protruding from the first and second cylinders 111 and 121, and is housed inside the first and second cylinders 111 and 121.

That is, the first elastic pressing force and the second elastic pressing force act in directions substantially orthogonal to the axial direction of the abutment tooth 20 and with substantially equal magnitude in the directions facing each other. There is.

As described above, the tapered inner flange portions 111t and 121t are provided at the tips of the first and second spherical side end portions of the first and second cylindrical bodies 111 and 121, and the flange inner diameters are the first and second. Since it is slightly smaller than the outer shape of the spherical bodies 114 and 124, it serves as a stopper for popping out the first and second spherical bodies. That is, when the denture 10 is removed from the abutment tooth 20, the first and second spherical bodies 114 and 124 are prevented from popping out from the first and second cylindrical bodies 111 and 121.

The two first and second spherical engaging recesses 210 and 220 formed in the denture engaging protrusion 200 are separated from each other by about 180 degrees in the circumferential direction of the denture engaging protrusion 200 for denture engagement. It is formed near the tip of the protrusion 200 in the longitudinal direction.

Specifically, the first and second spherical engaging recesses (engaging force receiving portions) 210 and 220 are combined with the first latch engaging portion 110 when the denture 10 is attached to the abutment tooth 20. The first and second spherical bodies 114 and 124 at the tip of the second latch engaging portion 120 are formed so as to sandwich the denture engaging protruding portion 200 from both sides.

That is, the denture engaging protrusion 200 has a recessed portion at a position where the first and second spherical bodies 114 and 124 at the tips of the first latch engaging portion 110 and the second latch engaging portion 120 enter, respectively. Each is formed on the outer peripheral surface.

In other words, the first and second spherical engaging recesses 210 and 220 are first when the denture base 100 comes into close contact with the denture 10 via the saliva layer D when the denture 10 is attached to the abutment tooth 20. The first and second spheres 114 and 124 are fitted to the first and second sphere engaging recesses 210 and 220, and the denture 10 is attached to the abutment tooth 20 to maintain the state before occlusion. It is formed so that it is in the right position.

Then, at the first stage in which the denture engaging protrusion 200 enters the denture accommodating recess due to the elastic pressing force of the first and second coil springs 113 and 123, the first and first denture engaging protrusions 200 are inserted. The first and second spheres 114 and 124 are inside the first and second cylinders 111 and 121 along the peripheral surface above the portion where the sphere engaging recesses 210 and 220 of 2 are formed. Then, as the denture engaging protrusion 200 enters the denture accommodating recess 150, the first and second spheres 114 and 124 become the first and second sphere engaging recesses. It is designed to enter 210 and 220.

Further, in the case of the present embodiment, the first and second spherical engaging recesses 210 and 220 form two hypotenuses in a side view without forming a step on the peripheral surface of the denture engaging protrusion 200. It is formed from a combination of tapered surfaces.

The taper angle α (see FIG. 4) of the tapered portion on the tip end side of the denture engaging protrusion, that is, the angle α of the denture engaging protrusion 200 with respect to the abutment tip side axial direction, attaches the denture 10 to the denture 20. When pressed against the peripheral surface of the peripheral surface of the tip of the denture engaging protrusion 200 by the first elastic pressing force and the second elastic pressing force, the first of the first and second latch engaging portions 110 and 120. And the second spheres 114 and 124 do not receive an excessive impact when entering the first and second recesses, respectively, and when the denture 10 is attached to the abutment tooth 20, the first and second spheres 114 and 124 do not receive an excessive impact. The first and second spherical bodies 114 and 124 of the latch engaging portions 110 and 120 of the above are at an angle that does not disengage from the first and second spherical engaging recesses 210 and 220 over the tapered portions 211 and 221. ing.

Further, the first and second spherical body engaging recesses 210 and 220, the first latch engaging portion 110, and the first and second spherical bodies 114 and 124 of the second latch engaging portion 120, respectively. In order to disengage the denture, the denture wearer must pick the denture 10 with a finger and intentionally pull it, so that the denture 10 does not come off the abutment tooth 20 at an angle.

At angles β (see FIG. 5) of the second tapered portions 212 and 222, the first latch engaging portion 110 and the second latch engaging portion 120 engage in the first engagement when the denture wearer engages. It separates from the resultant force receiving portion 210 and the second engaging force receiving portion 220 and moves to the vicinity of the residual root portion side on the peripheral surface of the denture engaging protruding portion 200, and the first latch engagement is performed according to the magnitude of the occlusal force. The occlusal portion 110 and the second latch engaging portion 120 exert a first elastic pressing force and a second elastic pressing force on the peripheral surface of the denture engaging protrusion 200 toward the residual root portion. The angle is suitable for further movement to 21.

As for the elastic pressing force of the coil springs of the first latch engaging portion 110 and the second latch engaging portion 120, the first and second spherical bodies 114 and 124 are the first and second as described above. Even when the first and second spheres 114 and 124 are inserted into the spherical engaging recesses 210 and 220, respectively, the denture 10 is attached to the first and second spherical engaging recesses 210 and 220. While pressing with sufficient force to prevent accidental disengagement from the abutment tooth 20, the first and second spheres 114 and 124 disengage from the first and second recesses during occlusion. Even when the peripheral surface of the denture engaging protrusion 200 is moved toward the residual root portion 21, the first and second spherical bodies 114 and 124 are pressed against the peripheral surface of the denture engaging protrusion 200 with a predetermined force. It is stipulated in a size that can be continued.

As a result, the protruding portion 200 for engaging the denture continues to receive the first elastic pressing force and the second elastic pressing force that are substantially uniform in the direction substantially orthogonal to the axial direction thereof, thereby supporting the denture 10 even during occlusion. Continue to pinch one abutment tooth 20 from two points facing each other in the circumferential direction with substantially equal elastic pressing force so that the denture 10 is attached to the abutment tooth 20 even during occlusion. It has become.

By having such a structure, when the denture wearer occludes the denture 10, the occlusal force generated by the occlusal force is the compressive repulsive force from the gingiva 90 generated by the entire denture base of the denture 10 crushing the gingiva 90. It is possible to take charge of it.

The procedure for attaching and detaching the denture and its attachment attachment according to the first embodiment described above will be described below with reference to the drawings. FIG. 3 is a schematic side view showing a state before the denture 10 according to the first embodiment of the present invention is attached to the abutment tooth 20 and a state after the denture 10 is removed from the abutment tooth 20 in a partial cross section. be. The denture wearer first picks the denture 10 with his fingers and brings it closer to the abutment tooth 20 to reach the state shown in FIG.

FIG. 4 is a schematic side view showing a state immediately before attachment of the denture 10 to the abutment tooth 20 and a state immediately after removal of the denture 10 from the abutment tooth 20 according to the first embodiment of the present invention in a partial cross section. Is. Following the state shown in FIG. 3, the denture wearer begins to insert the abutment tooth 20 into the abutment tooth accommodating recess 150 of the denture 10. This leads to the state shown in FIG.

FIG. 1 is a schematic side view showing a state in which the denture 10 is attached to the abutment tooth 20 in a partial cross section in the first embodiment of the present invention. When the denture wearer pushes the denture 10 toward the gingiva 90 with a finger, the first sphere 114 and the second sphere 124 are subjected to this pressing force to cause the first latch engaging portion 110 and the second latch. The coil springs of the engaging portions 120 are contracted (compressed), respectively, and the first and second spherical bodies 114 and 124 slightly enter the first and second latch engaging portions.

That is, the first sphere 114 and the second sphere 124 are slightly retracted in the horizontal direction along the peripheral surface of the denture engaging protrusion 200, respectively, to reach the denture mounting state shown in FIG. In this state, the first and second spherical bodies 114 and 124 at the tips of the first and second latch engaging portions 110 and 120 are engaged with the first and second spherical bodies of the denture engaging protrusion 200. Engage with the concave portions 210 and 220, respectively.

In this engaged state, the first and second latch engaging portions 110 and 120 are formed into first and second spherical bodies due to the elastic pressing force of the coil springs of the first and second latch engaging portions 110 and 120. The entire bottom surface of the denture base 100 of the denture 10 is firmly adhered to the gingiva 90 via the saliva layer D while being fitted so as not to be easily disengaged from the engaging recesses 210 and 220, and the abutment tooth 20 of the denture 10 is firmly attached. Maintain the attachment to.

In FIG. 5, the denture wearer engages with a certain amount of occlusal force from the state shown in FIG. 1, and the two spheres 114 and 124 are the two sphere engaging recesses 210 and 220 of the denture engaging protrusion 200, respectively. It is a schematic side view which shows the state which deviated from, and started to move toward a residual root portion 21 in a partial cross section. By occlusing to some extent from the state of FIG. 1, the occlusal force is applied to the denture 10, the entire denture moves so as to press the gingiva 90, and the elastic pressing force of the first and second latch engaging portions 110 and 120 causes the denture to move. The latch engagement state is released.

That is, the spherical bodies 114 and 124 at the tips of the first and second latch engaging portions 110 and 120 are disengaged from the first and second spherical engaging recesses 210 and 220 of the denture engaging protrusion 200. , The entire denture will be pressed against the gingiva 90.

In FIG. 6, the denture wearer further occludes with respect to the state of FIG. 5, and the two spheres further move from the sphere engaging recesses 210 and 220 of the denture engaging protrusion 200 toward the residual root portion 21. It is a schematic side view showing a state in which the denture base 100 has stopped sinking due to the compressive repulsive force from the gingiva 90 generated by the denture base 100 crushing the gingiva 90 in a partial cross section.

When the denture wearer bites the denture 10 more strongly, the entire denture sinks into the gingiva 90. Further, as can be easily understood from the degree of change in the thickness of the gingiva 90 from FIG. 10 to FIG. 11, the compressive repulsive force of the gingiva 90 increases according to the degree of subsidence of the denture 10 into the gingiva 90, and eventually the repulsion thereof. The force balances with the occlusal force to stop further subsidence of the denture 10 with respect to the gingiva 90.

Even in this state, the first and second latch engaging portions 110 and 120 continue to apply an even elastic pressing force to the positions facing each other in the circumferential direction on the peripheral surface of the artificial tooth engaging protruding portion 200. The force in the direction orthogonal to the axial direction of the abutment tooth 20 is offset.

As a result, the two elastic pressing forces act on the abutment tooth 20 in a well-balanced manner, and the moment in the tilting direction of the abutment tooth 20 can be prevented. As a result, it is possible to prevent damage to the fibrous tissue of the periodontal ligament 80 that connects the residual root portion 21 of the abutment tooth 20 having only one tooth and the jawbone, and to prolong the life of the abutment tooth 20. As a result, the denture 10 can be attached for a long period of time with only one abutment tooth 20.

When the occlusal motion by the denture wearer is completed, the occlusal force does not act on the denture 10, and the denture 10 returns to the state shown in FIG. 1 in the reverse order of the above-mentioned order with respect to the abutment tooth 20. Then, the denture wearer picks and pulls the denture 10 with his / her fingers as needed, such as after eating, and removes the denture 10 from the abutment tooth 20. In this case as well, the denture 10 can be easily removed from the abutment tooth 20 by the same continuous operation as described above.

Subsequently, the configuration peculiar to the second embodiment will be described. In the second embodiment, the first engaging force receiving portion 310 and the second engaging receiving portion 320 of the denture engaging protruding portion 300 have a predetermined length in the longitudinal direction of the denture engaging protruding portion 300. It is composed of an extended engagement region, that is, a first spherical engagement groove portion 310 (first engagement force receiving portion) and a second spherical engagement groove portion 320 (second engagement force receiving portion).

Then, when the denture wearer occludes the denture 10, the first latch engaging portion 110 acts on the first engaging force receiving portion 310 of the denture engaging protruding portion 300 according to the occlusal state. The position where the elastic pressing force and the second elastic pressing force acting on the second engaging force receiving portion 320 of the denture engaging protruding portion 300 from the second latch engaging portion 120 act on these pressing forces is first. While moving along the engaging force receiving portion 310 and the second engaging force receiving portion 320, the denture engaging protruding portion 300 has a first elastic pressing force and a first elastic pressing force substantially uniform in a direction substantially orthogonal to the axial direction thereof. By continuing to receive the elastic pressing force of 2, the one abutment tooth 30 that supports the denture 10 is continuously sandwiched by the substantially even elastic pressing force even during occlusion, and the denture 10 is attached to the abutment tooth 30. It is designed to be maintained.

By having such a structure, when the denture wearer occludes the denture 10, the occlusal force generated by the occlusal force is the compressive repulsive force from the gingiva 90 generated by the entire denture base of the denture 10 crushing the gingiva 90. It is possible to take charge of it.

Here, since the first latch engaging portion 110 and the second latch engaging portion 120 have the same configuration as that of the first embodiment, the description thereof will be diverted and the detailed description of the configuration will be omitted.

The elastic pressing force of the first and second coil springs 113 and 123 is the first stage in which the denture engaging protrusion 300 enters the abutment tooth accommodating recess 150, and the first and first denture engaging protrusions 300 are applied. The first and second spheres 114, 124 are placed in the first and second cylinders 111, 121 along the peripheral surface above the portion where the sphere engaging groove portions 310, 320 of 2 are formed. The first and second spheres 114, 124 are moved into the first and second sphere engaging grooves 310, as the denture engaging protrusion 300 enters the denture accommodating recess 150 after being slightly pushed in. The size is specified to be suitable for entering 320.

The two first and second spherical engaging grooves 310 and 320 formed in the denture engaging protrusion 300 are separated from each other by about 180 degrees in the circumferential direction of the denture engaging protrusion 300, and the denture engaging protrusions 300 are separated from each other. It is formed so as to extend from the distal end side to the proximal end side of the denture engaging protrusion 300 in the middle of the longitudinal direction of the portion 300.

That is, the first and second spherical engaging groove portions 310 and 320 have the first latch engaging portion 110 and the second latch engaging portion when the denture 10 is attached to the abutment tooth 30 as described above. The first and second spherical bodies 114 and 124 at the tip of the 120 are positioned so as to sandwich the denture engaging protrusions 300 from both sides. That is, the outer periphery of the denture engaging protrusion 300 is provided as a groove at a position where the first and second spherical bodies 114 and 124 at the tips of the first latch engaging portion 110 and the second latch engaging portion 120 enter, respectively. Each is formed on a surface.

Then, on the tip end side of the protrusion for engaging the denture of the first and second spherical engagement grooves 310 and 320, the bottom surface of the first and second spherical engagement grooves 310 and 320 and the denture engagement on the tip side thereof. Tapered portions 311, 321 are formed in place of the steps between the peripheral surfaces of the combined protrusions 300 and the like.

The taper angle α of the tapered portions 311, 321 (see FIG. 8), that is, the angle α with respect to the axial direction of the denture engaging protrusion 300 is the tip of the denture engaging protrusion 300 when attached to the abutment tooth 30 of the denture 10. The first and second spheres 114 and 124 pressed against the peripheral surface of the portion by elastic pressing force receive an excessive impact when entering the first and second sphere engaging grooves 310 and 320. After the denture 10 is attached to the abutment tooth 30, the first and second spherical bodies 114 and 124 of the first latch engaging portion 110 and the second latch engaging portion 120 form the tapered portions 311, 321. The angle is such that it does not deviate from the first and second spherical engaging grooves 310 and 320 after getting over it.

That is, the angles of the tapered portions 311, 321 are the first and second latch engaging portions 110 and the second latch engaging portions 120 from the first and second spherical engaging grooves 310 and 320. In order to remove the spheres 114 and 124, the denture wearer must pick the denture 10 with his fingers and pull it intentionally, so that the denture 10 does not come off from the abutment tooth 30.

The lengths of the first and second spherical engagement grooves 310 and 320 are the first and first when the denture base 100 is in close contact with the denture layer D when the denture 10 is attached to the abutment tooth 30. The first and second spheres 114 and 124 are located near the tapered portion of the spheroidal engaging groove portions 310 and 320 of 2, and when the denture wearer subsequently starts the occlusal motion, the entire denture base has an occlusal force. As the denture 10 sinks in accordance with the sinking of the gingiva 90, the first and second spheres 114 and 124 are tapered along the first and second sphere engaging grooves 310 and 320. The length is such that it can move in the direction away from 311, 321, that is, on the peripheral surface of the denture engaging protrusion 300 toward the proximal end side.

Then, when the denture wearer occludes with the maximum occlusal force, the proximal end side (lower side) ends of the first and second spherical engagement grooves 310 and 320 reach the vicinity of the abutment tooth proximal end side. As described above, the first and second spherical engaging grooves 310 and 320 are formed.

The elastic pressing force of the coil springs of the first latch engaging portion 110 and the second latch engaging portion 120 is such that the first and second spherical bodies 114 and 124 are the first and second spherical engaging groove portions. Even when entering 310, 320, the size is sufficient to be pressed against the first and second spherical engagement grooves 310 and 320 of the first and second spherical bodies 114 and 124 with a predetermined force. Have.

The procedure for attaching and detaching the denture 10 and its attachment attachment according to the second embodiment described above will be described below with reference to the drawings. FIG. 8 is a schematic cross-sectional view showing a state in which the denture 10 according to the second embodiment of the present invention is started to be attached to the abutment tooth 30 and a state in which the denture 10 is started to be removed from the abutment tooth 30. It is a side view. The denture wearer first picks the denture 10 with his fingers and brings it closer to the abutment tooth 30 to reach the state shown in FIG.

FIG. 9 is a partial cross-sectional view of a state immediately before the denture 10 according to the second embodiment of the present invention is completely attached to the abutment tooth 30 and a state immediately after the denture 10 is started to be removed from the abutment tooth 30. It is a schematic side view which shows. Following the state shown in FIG. 8, the denture 10 begins to insert the abutment tooth 30 into the recessed portion for accommodating the abutment tooth. This leads to the state shown in FIG.

FIG. 7 is a schematic side view showing a state in which the denture 10 is attached to the abutment tooth 30 in a partial cross section in the second embodiment of the present invention. From the state shown in FIG. 9, the denture wearer pushes the denture 10 toward the gingiva 90 with a finger to reach the denture wearing state shown in FIG. In this state, the first and second spherical bodies 114 and 124 at the tips of the first and second latch engaging portions 110 and 120 are engaged with the first and second spherical bodies of the denture engaging protruding portion 300. They are engaged with the groove portions 310 and 320, respectively.

In this engaged state, the first and second latch engaging portions 110 and 120 are first and second by the elastic pressing force of the coil springs 113 and 123 of the first and second latch engaging portions 110 and 120. The entire bottom surface of the denture base 100 of the denture 10 is firmly adhered to the gingiva 90 via the saliva layer D while being fitted so as not to be easily disengaged from the spherical engaging grooves 310 and 320 of the denture 10. The state of attachment to the tooth 30 is maintained.

In FIG. 10, the denture wearer engages with a certain amount of occlusal force from the state shown in FIG. 7, and the two spheres 114 and 124 are formed into the two sphere engaging grooves 310 and 320 of the denture engaging protrusion 300, respectively. It is a schematic side view which shows the state which started to move toward the residual root portion 21 along a partial cross section. From the state of FIG. 7, the occlusal force is applied to the denture 10 by occlusing to some extent, the entire denture moves so as to press the gingiva 90, and the two spherical bodies of the first and second latch engaging portions 110 and 120 are formed. 114 and 124 have begun to move toward the residual root portion 21 along the two spherical engaging grooves 310 and 320 of the denture engaging protrusion 300 while applying elastic pressing force to the denture engaging protrusion 300, respectively. I understand.

FIG. 11 shows that the denture wearer occludes with a large occlusal force with respect to the state of FIG. FIG. 3 is a schematic side view showing a state in which the denture base 100 has stopped sinking due to the compression repulsive force from the gingiva 90 generated by the denture base 100 crushing the gingiva 90 while moving further. When the denture wearer bites the denture 10 more strongly, the entire denture sinks into the gingiva 90, and the state shown in FIG. 10 is changed to the state shown in FIG.

As can be easily understood from the degree of change in the thickness of the gingiva 90 from FIG. 10 to FIG. 11, the compressive repulsive force of the gingiva 90 increases according to the degree of subsidence of the denture 10 into the gingiva 90, and eventually the repulsive force increases. It balances with the occlusal force and stops further subsidence of the denture 10 with respect to the gingiva 90.

Even in this state, the first and second latch engaging portions 110 and 120 continue to apply an even elastic pressing force to the positions facing each other in the circumferential direction on the peripheral surface of the artificial tooth engaging protruding portion 300. The force in the direction orthogonal to the axial direction of the abutment tooth 30 is offset.

As a result, the two elastic pressing forces act on the abutment tooth 30 in a well-balanced manner, and the moment in the tilting direction of the abutment tooth 30 can be prevented. As a result, it is possible to prevent damage to the fibrous tissue of the periodontal ligament 80 that connects the residual root portion 21 of the abutment tooth 30 having only one tooth and the jawbone, and to prolong the life of the abutment tooth 30.

When the occlusal motion by the denture wearer is completed, the occlusal force does not act on the denture 10, and the denture 10 returns to the state shown in FIG. 7 in the reverse order of the above-mentioned order with respect to the abutment tooth 30. Then, the denture wearer picks and pulls the denture 10 with his / her fingers as needed, such as after eating, and removes the denture 10 from the abutment tooth 30. In this case as well, the denture 10 can be easily removed from the abutment tooth 30 by the same continuous operation as described above.

In each of the above-described embodiments of the present invention, even when the denture wearer bites the denture 10 with all one's might, the upper end of the denture engaging protrusion 300 and the bottom of the denture accommodating recess 150 are formed. A further feature is that it has a structure that leaves a certain residual space S (see FIGS. 6 and 11) between them.

By having such a configuration, the following effects can be exerted. Specifically, in a state where the denture 10 is fully occluded, the tip of the denture engaging protrusions 200 and 300 (upper end in the figure) and the bottom of the abutment tooth accommodating recess 150 (lower bottom in the figure). By leaving a certain residual space S (see FIGS. 6 and 11) between the denture and the denture, the occlusal force does not directly act on the tips of the denture engaging protrusions 200 and 300 when the denture is occluded in this way. It has become. This makes it possible to prevent an unreasonable force from acting in the axial direction of not only the protrusions 200 and 300 for engaging the denture but also the residual root portion 21 to which the protrusions 200 and 300 are attached.

That is, the quotient force is extremely large, about 3 MPa to about 9 MPa (average 30 kg to 90 kg per 1 cm ² (300 tons to 900 tons per 1 m ² )). Further, according to the present invention, it is possible to prevent such an occlusal force from being applied to the abutment tooth as an impact force when the occlusal force is fully occluded.

In this way, it is possible to prevent such a large bite force quotient from being applied as an impact force to the abutment tooth, that is, the residual root portion and the periodontal ligament connecting the residual root portion and the jawbone, and only one for attaching the denture of the present invention. The abutment tooth made of the abutment can be maintained in a healthy state for a long period of time.

As a result, once the denture and its attachment attachment according to the present invention are attached, it is possible to maintain the attached state for a long period of time, and it is not necessary to frequently visit the dental clinic for maintenance, and the denture and its attachment attachment are not required. Can be prevented from breaking and causing serious problems such as reattaching new dentures and their attachments.

Next, the effects peculiar to each embodiment and each modification described above, that is, the peculiar effects based on the configuration of the present invention will be described. In the present invention, the denture is attached to the abutment tooth only by the close contact between the elastic latch engaging mechanism and the gingiva of the denture base, and the present invention does not have any other conceivable components such as a magnet.

The moment the denture is properly attached to the abutment tooth, the corresponding latch engagement part of the denture clicks into the engagement recesses on both sides of the abutment tooth, so this feeling is felt for the nerves of the fingertips and auditory nerves. Instead, it is transmitted directly to the brain via the trigeminal nerve, and even in old age, it is possible to surely realize (confirm) that the denture was firmly attached to the abutment tooth. Therefore, the denture can be easily attached and detached by oneself without the trouble of having a third party such as a caregiver help or confirm the attachment.

This makes it possible to reduce the size of the entire denture. Since the width of the denture (thickness in the direction connecting the outside and the inside of the mouth) can be reduced by downsizing the denture, the denture according to the present invention is attached to these narrow portions via the residual root portion or the implant. be able to.

The reason for this is that the width of the denture engaging protrusions that make up the denture for mounting the denture must be approximately the same as or at least less than the width of the residual root or implant to which it is fixed, and is greater. This is because various problems occur after the denture is attached.

In this way, by realizing a denture that can be attached and detached by itself, which has been miniaturized by the present invention, the denture can be attached to a woman with a small occlusal diameter or an elderly person who wears a denture whose occlusal diameter contracts with age. In doing so, the degree of freedom regarding the wearable subject and the wearable occlusal site is increased.

In addition, since the width of the denture can be narrowed, the denture according to the present invention can be positively attached to the anterior tooth where the width of the residual root and the implant must be reduced due to the original structure of the tooth. can. This makes it possible to eliminate the problems when the clasp type denture described below is attached to the anterior teeth.

The groove portion according to the second embodiment described above also serves as a guide (guidance) for guiding the direction of the quotient force acting on the free end denture in the correct and regular direction. This also has the role of correcting an unfavorable biting habit. As a result, it becomes possible to get into the habit of chewing food to the extent that it can promote digestion and absorption.

Hereinafter, according to the present invention, it will be described that the problems caused by scrubs, which have been widely used in the past, can be solved at once. Specifically, if a general denture fixed with a clasp is used for a long period of time, the clasp part will be plastically deformed and eventually fatigued and fractured, and the tip will pierce the mucous membrane in the mouth and the tongue. It can hurt them or swallow clasp debris with food, leading to accidental ingestion.

However, when the denture and its attachment attachment according to the first embodiment described above are used, the denture itself does not have a mechanical effect on the denture due to the complicated movement of the denture due to such occlusion, and the role of the denture itself is used. It can be left for a long period of time while maintaining the above, and the denture itself can be used for a long period of time without being damaged.

In addition, since the entire denture is attached to the abutment tooth with respect to the protrusion for engaging the denture in the recess for accommodating the abutment tooth inside the denture without using a clasp, a metal member such as a clasp is exposed to the outside. There is nothing to do. As a result, the metal part of the clasp is not visible from the outside when the mouth is opened, and at first glance it is not clear that the denture is attached, so that the denture according to the present invention is very aesthetically pleasing. It can be said that there is. In addition, denture wearers can go out from this point of view and enjoy conversations with friends and acquaintances without hesitation, and if questions arise while shopping or attending lectures, the other party will be fully satisfied. It is possible to listen without hesitation with an audible voice.

In addition, when an abutment is provided at the residual root and a denture with a clasp that has been conventionally used is attached to the abutment, the quotient force is about 3 MPa to about 9 MPa (average 30 kg to 90 kg per 1 cm ² ) as described above. 300 tons to 900 tons per 1 m ² )), which is extremely large. When such a large occlusal force that constantly changes direction and size during occlusal acts on the clasp part of the denture equipped with the clasp that is generally used in the past, this part loosens or breaks due to metal fatigue. There is a chilling problem.

Further, when a conventional denture equipped with a clasp is attached to the abutment tooth, the clasp is conspicuous when the mouth is opened, and there is an aesthetic problem. Furthermore, after long-term use, the clasp will loosen and the denture will easily come off, and the denture that has come off in the mouth will continue to be pressed with the tongue, or the denture will accidentally come off due to sneezing and pop out of the mouth. Due to such a situation, it cannot be used for a long period of time, which hinders the improvement of quality of life, which is regarded as important for the advent of an aging society in recent years.

Furthermore, when using a denture equipped with a conventional clasp, it is necessary to periodically check whether the clasp part is loose and to perform time-consuming maintenance to restore this part when it is found. It is supposed to be. In addition, when removing a denture equipped with a conventional clasp and cleaning it, especially for a denture wearer with a handicapped fingertip, the denture is accidentally dropped on the floor, and the metal clasp part is bent. There is also a risk of breaking or breaking. In such a case, if this part of the clasp is restored to its original state, or if it is bent or damaged to the extent that it cannot be repaired, it causes a troublesome problem that the entire clasp must be replaced with a new one. ..

Then, while requesting repair or replacement of the clasp part, the denture cannot be used, which is extremely inconvenient. However, according to the present invention, since a metal part such as a clasp for fixing and supporting the denture is not provided on the outside of the denture, such inconvenience does not occur at all and it is almost maintenance-free. It has a great merit that you can continue to use the denture with peace of mind.

Subsequently, a first modification and a second modification of the present invention will be described below. Regarding the first modification and the second modification, the reference numerals shown in the drawings are the same as those of the above-described embodiment, and detailed description thereof will be omitted.

FIG. 12 is a schematic side view showing a first modification of the present invention in a partial cross section. In the first modification, the denture engaging protrusion 200 is viewed from the direction orthogonal to the direction in which the first and second elastic pressing forces are applied, from the tip end side to the proximal end side of the abutment tooth. It has a continuous contour shape of tapered portions 211 and 221 forming a predetermined angle and bulging portions 213 and 223 whose width gradually expands. The two valleys 214 and 224, which are the joint points between the tapered portions 211 and 221 and the bulging portions 213 and 223 shown on the left and right in the drawing, correspond to the spherical engaging recesses of the first embodiment described above. do.

FIG. 13 is a schematic side view showing a second modification of the second embodiment of the present invention in a partial cross section. In the second modification, the prosthesis engaging protrusion 300 is viewed from the direction orthogonal to the direction in which the first and second elastic pressing forces are applied, from the tip end side to the proximal end side of the abutment tooth. It has a continuous contour shape with tapered portions 311, 321 forming a predetermined angle and straight portions 312, 322 in the vertical direction.

Then, the two valleys 313 and 323 shown on the left and right in the drawing in which the tapered portions 311, 321 and the straight portions 312 and 322 are connected are formed at the distal end side of the spherical engaging groove portion of the first embodiment described above. Equivalent to. Further, a certain region of the straight line portion corresponds to the spherical body engaging groove portion of the second embodiment.

It should be noted that each of the above-described embodiments and various modifications thereof merely show exemplary contents of the present invention, and within the scope of the present invention, various structures having different shapes, materials, sizes, etc. may be used. Needless to say, it may be a denture and its attachment.

Specifically, for example, the present invention can be applied even if the abutment tooth is formed based on an implant implanted in the jawbone instead of being formed based on the residual root portion. By using an implant that needs to be used for a long period of time once implanted as a part of the denture and the abutment tooth of the attachment according to the present invention, one implant can be prevented from being damaged and one can be used. The denture according to the present invention can be used for a long period of time without the need to implant an implant in a portion close to the abutment tooth and at no cost.

In addition, the same effect as that obtained when the abutment tooth is constructed by using the residual root portion described above can be naturally enjoyed even when the abutment tooth is constructed by using the implant.

Specifically, regardless of whether the abutment tooth is configured using the residual root or the implant, the tip of the protrusion for engaging the denture and the recess for accommodating the abutment tooth are dented when the denture is fully occluded. By leaving a certain residual space between the implant and the bottom of the part, the implant does not destroy the residual root and the periodontal ligament around it in the former case, and it is difficult to re-implant once destroyed in the latter case. Can be used for a long period of time.

In constructing the abutment tooth, it can be said not only when the residual root part is used but also when the abutment tooth is constructed by using the implant, but when the abutment tooth is bitten too strongly, the abutment tooth is flat. The dimensional relationship of the denture with the abutment tooth can be adjusted for each denture wearer by intentionally abutting the bottom surface of the abutment tooth accommodating recess (in each drawing, the bottom surface shown on the upper side in the figure) against the head. You may choose.

As a result, when you bite too hard, you can directly feel that you have bitten too much from the abutment tooth through the residual root and jawbone, and you will be able to actively pay attention to the subsequent excessive bite. The abutment tooth itself can be made to last longer without damaging the residual root of the pedicle.

Further, in the first embodiment of the present invention, the size of the spherical engaging recess is large enough to allow the spherical body to fit into the recess, but the denture has an abutment tooth. As long as the mounting state can be sufficiently secured by the degree of mounting of the denture base and the gingiva, it may be formed from a recessed portion having a certain length in the circumferential direction.

Similarly, also in the second embodiment, if the state of attachment of the denture to the abutment tooth can be sufficiently secured by the degree of attachment of the denture base and the gingiva, the longitudinal direction of the denture engaging protrusion instead of the spherical engaging groove portion. In, the entire circumference may be reduced in diameter so as to correspond to the depth of the groove portion.

In other words, it is conceivable that the contour shapes of the first modification and the second modification described above are formed over the entire circumference of the denture engaging protrusion.

10 Denture 20 Abutment tooth 21 Residual root 30 Abutment tooth 80 Periodontal ligament 90 Gingiva 100 Denture base 101, 102, 103, ... Artificial tooth 110 1st latch engagement part 111, 121 1st and 2nd cylinder Body 111t, 121t Tapered inner flange 112, 122 First and second spring holding plates 113,123 First and second coil springs 114, 124 First and second spheres 120 Second latch engagement 130 Engagement unit 150 Abutment tooth accommodating recess 200 Prosthesis engagement protrusion 210 First spherical engagement recess (first engagement force receiving portion)
211,221 (1st) taper part 212,222 (2nd) taper part 213,223 bulge part 214,224 valley 220 2nd spherical engagement recess (second engagement force receiving part)
250 Fixing member 300 Prosthesis engaging protrusion 310 First spherical engaging groove (first engaging force receiving portion)
320 Second spherical engagement groove (second engagement force receiving portion)
311,321 Tapered part 312,322 Straight part 313,323 Valley 350 Fixing member D Saliva layer S Constant residual space

In order to solve the above-mentioned problems, the denture according to claim 1 of the present invention and its attachment attachment are
A denture having at least two dentures arranged side by side and having an elongated denture base with the plurality of dentures fixed at the top, and a denture having an attachment for attaching the denture to an abutment tooth. In its mounting attachment
The denture is provided with a bottomed abutment tooth accommodating recess for inserting and holding the abutment tooth at a predetermined position in the longitudinal direction on the bottom surface side in contact with the gingiva of the denture base, and the abutment tooth accommodating. A first latch engaging portion and a second latch engaging portion are provided at opposite positions on the inner peripheral surface of the recessed portion.
The attachment is attached to the residual root portion to form the abutment tooth, and the denture wearer engages with the first latch engaging portion and the second latch engaging portion, respectively . The denture engaging protrusion on which the engaging force receiving portion and the second engaging force receiving portion are formed, and a fixing member for fixing the denture engaging protrusion to the residual root portion.
The abutment tooth is formed by attaching the prosthesis engaging protrusion to the residual root portion using the fixing member.
In a state where the denture is attached to the abutment tooth, the first engaging force receiving portion and the second engaging receiving portion act on the first engaging force receiving portion from both sides of the protruding portion for engaging the denture. The first elastic pressing force of the latch engaging portion, the second elastic pressing force of the second latch engaging portion, and the adhesion force generated when the denture base of the denture is in close contact with the gingiva of the denture. A denture and its attachment that maintain the attachment to the abutment tooth .
The first engaging force receiving portion and the second engaging force receiving portion are positioned so as to face each other in the circumferential direction on the peripheral surface of the protruding portion for engaging the denture, and are aligned with the extending direction of the denture base. It is formed as an engaging recess at the position facing the circumferential direction.
When the denture wearer wears the denture, the first latch engaging portion and the second latch engaging portion engage with each other with the first engaging force receiving portion and the second engaging portion. It is designed to be fitted to each of the resultant force receiving parts, and
When the denture wearer engages, the first latch engaging portion and the second latch engaging portion are disengaged from the first engaging force receiving portion and the second engaging force receiving portion. The first latch engaging portion and the second latch engaging portion are moved to the vicinity of the residual root portion on the peripheral surface of the denture engaging protrusion, and the first latch engaging portion and the second latch engaging portion are formed according to the magnitude of the occlusal force. While sandwiching the denture engaging protrusion at two locations facing each other in the circumferential direction by the elastic pressing force of 1 and the second elastic pressing force, the denture engaging protrusion is placed on the peripheral surface of the denture engaging protrusion toward the residual root portion. In addition to being able to move further along the longitudinal center axis of the denture engaging protrusion,
The protruding portion for engaging the denture continues to receive the first elastic pressing force and the second elastic pressing force in a direction substantially orthogonal to the axial direction of the abutment tooth and facing each other during occlusion. Even in the above case, one abutment tooth supporting the denture is continuously sandwiched between the first elastic pressing force and the second elastic pressing force to maintain the mounted state of the denture on the abutment tooth. Ori,
By having a structure in which the denture wearer takes charge of the occlusal force generated by the denture by the compressive repulsive force generated by the entire denture base of the denture crushing the denture. The denture engaging protrusion supports the denture even during occlusion by continuing to receive the first elastic pressing force and the second elastic pressing force that are substantially uniform in the direction substantially orthogonal to the axial direction thereof. A single denture is continuously sandwiched from two locations facing each other in the circumferential direction with substantially equal elastic pressing force, and the denture is maintained in a mounted state on the denture even during occlusion, and the denture is maintained. When a denture wearer bites the denture, the occlusal force generated by the denture can be handled by the compression repulsive force from the denture generated by the entire denture base of the denture crushing the denture. It is a feature.

Further, the denture according to claim 2 of the present invention and its attachment attachment are
A denture having at least two dentures arranged side by side and having an elongated denture base with the plurality of dentures fixed at the top, and a denture having an attachment for attaching the denture to an abutment tooth. In its mounting attachment
The denture is provided with a bottomed abutment tooth accommodating recess for inserting and holding the abutment tooth at a predetermined position in the longitudinal direction on the bottom surface side in contact with the gingiva of the denture base, and the abutment tooth accommodating. A first latch engaging portion and a second latch engaging portion are provided at opposite positions on the inner peripheral surface of the recessed portion.
The attachment is attached to the residual root portion to form the abutment tooth, and the first engaging force that engages the denture wearer with the first latch engaging portion and the second latch engaging portion, respectively. It consists of a denture engaging protrusion on which a receiving portion and a second engaging force receiving portion are formed, and a fixing member for fixing the denture engaging protrusion to the residual root portion.
The abutment tooth is formed by attaching the prosthesis engaging protrusion to the residual root portion using the fixing member.
In a state where the denture is attached to the abutment tooth, the first engaging force receiving portion and the second engaging receiving portion act on the first engaging force receiving portion from both sides of the protruding portion for engaging the denture. The first elastic pressing force of the latch engaging portion, the second elastic pressing force of the second latch engaging portion, and the adhesion force generated when the denture base of the denture is in close contact with the gingiva of the denture. A denture and its attachment that maintain the attachment to the abutment tooth.
The first engaging force receiving portion and the second engaging receiving portion are positioned so as to face each other in the circumferential direction on the peripheral surface of the protruding portion for engaging the denture, and are aligned with the extending direction of the denture base. It is formed as a longitudinally extending engaging groove portion having a predetermined length in the longitudinal direction of the protruding portion for engaging the denture at a position facing the circumferential direction.
When the denture wearer occludes the denture, the first elasticity acting from the first latch engaging portion to the first engaging force receiving portion of the denture engaging protrusion according to the occlusal state. The denture engaging protrusion is opposed to the denture engaging protrusion in the circumferential direction by the pressing force and the second elastic pressing force acting on the second engaging force receiving portion of the denture engaging protrusion from the second latch engaging portion. While sandwiching it at two places, the position where the first elastic pressing force and the second elastic pressing force act is moved along the first engaging force receiving portion and the second engaging force receiving portion. During occlusal, the protruding portion for engaging the denture continues to receive the first elastic pressing force and the second elastic pressing force in a direction substantially orthogonal to the axial direction of the abutment tooth and facing each other. Also, one abutment tooth supporting the denture is continuously sandwiched between the first elastic pressing force and the second elastic pressing force to maintain the mounted state of the denture on the abutment tooth. ,
By having a structure in which the denture wearer takes charge of the occlusal force generated by the denture by the compressive repulsive force generated by the entire denture base of the denture crushing the denture. The denture engaging protrusion supports the denture even during occlusion by continuing to receive the first elastic pressing force and the second elastic pressing force that are substantially uniform in the direction substantially orthogonal to the axial direction thereof. A single denture is continuously sandwiched from two locations facing each other in the circumferential direction with substantially equal elastic pressing force, and the denture is maintained in a mounted state on the denture even during occlusion, and the denture is maintained. When a denture wearer bites the denture, the occlusal force generated by the denture can be handled by the compression repulsive force from the denture generated by the entire denture base of the denture crushing the denture. It is a feature.

Further, in the denture according to claim 3 of the present invention and its attachment attachment, instead of the abutment tooth being formed based on the residual root portion in the denture and its attachment attachment according to claim 1 or 2 . It is characterized by being formed on the basis of an implant placed in the jawbone.

Further, the denture according to claim 4 of the present invention is the denture according to claim 1 which is used only for the denture according to claim 1 and its attachment.

The denture according to claim 5 of the present invention is the denture engaging protrusion according to claim 1, which is used only for the denture according to claim 1 and its attachment.

The denture engaging protrusion according to claim 6 of the present invention is the denture according to claim 2, which is used only for the denture according to claim 2 and its attachment.

The denture engaging protrusion according to claim 7 of the present invention is the denture engaging protrusion according to claim 2, which is used only for the denture according to claim 2 and its attachment .
Further, the denture according to claim 8 of the present invention is a denture used only for the denture according to claim 1 defined in claim 3 and its attachment, and is formed based on the implant in claim 3. It is a denture that can be detachably attached only to the abutment tooth that has been removed.
Further, the denture engaging protrusion according to claim 9 of the present invention is a denture engaging protrusion used only for the denture and its mounting attachment according to claim 1 defined in claim 3. It is a denture engaging protrusion for covering the implant only for forming the abutment tooth in item 3.
Further, the denture engaging protrusion according to claim 10 of the present invention is a denture used only for the denture according to claim 2 and the attachment to which the denture is attached, which is defined in claim 3, and is an implant according to claim 3. It is a denture to be detachably attached only to the abutment tooth formed based on the above.
Further, the denture engaging protrusion according to claim 11 of the present invention is a denture engaging protrusion used only for the denture and its mounting attachment according to claim 2 defined in claim 3. It is a denture engaging protrusion for covering the implant only for forming the abutment tooth in item 3.

In order to solve the above-mentioned problems, the denture according to claim 1 of the present invention and its attachment attachment are
A denture having at least two dentures arranged side by side and having an elongated denture base with the plurality of dentures fixed at the top, and a denture having an attachment for attaching the denture to an abutment tooth. In its mounting attachment
The denture is provided with a bottomed abutment tooth accommodating recess for inserting and holding the abutment tooth at a predetermined position in the longitudinal direction on the bottom surface side in contact with the gingiva of the denture base, and the abutment tooth accommodating. A first latch engaging portion and a second latch engaging portion are provided at opposite positions on the inner peripheral surface of the recessed portion.
The attachment is attached to the residual root portion to form the abutment tooth, and the first engaging force that engages the denture wearer with the first latch engaging portion and the second latch engaging portion, respectively. It consists of a denture engaging protrusion on which a receiving portion and a second engaging force receiving portion are formed, and a fixing member for fixing the denture engaging protrusion to the residual root portion.
The abutment tooth is formed by attaching the prosthesis engaging protrusion to the residual root portion using the fixing member.
In a state where the denture is attached to the abutment tooth, the first engaging force receiving portion and the second engaging force receiving portion act on the first engaging force receiving portion from both sides of the denture engaging protruding portion. The denture is formed by the first elastic pressing force of the latch engaging portion 1 and the second elastic pressing force of the second latch engaging portion, and the adhesion force generated when the denture base of the denture is in close contact with the gingiva. A denture and its attachment attachment that maintain the attachment state to the abutment tooth.
The first engaging force receiving portion and the second engaging force receiving portion are positioned so as to face each other in the circumferential direction on the peripheral surface of the protruding portion for engaging the denture, and are aligned with the extending direction of the denture base. It is formed as an engaging recess at the position facing the circumferential direction.
When the denture wearer wears the denture, the first latch engaging portion and the second latch engaging portion engage with the first engaging force receiving portion and the second engagement portion, respectively. The first latch engaging portion and the second latch engaging portion are engaged with the first engaging force when the denture wearer engages with each other so as to be fitted to the resultant force receiving portion. The first latch engagement is provided according to the magnitude of the occlusal force while moving away from the receiving portion and the second engaging force receiving portion and moving to the vicinity of the residual root portion on the peripheral surface of the denture engaging protrusion. The denture engaging portion and the second latch engaging portion sandwich the denture engaging protrusion at two locations facing each other in the circumferential direction by the first elastic pressing force and the second elastic pressing force. The peripheral surface of the denture protrusion can be further moved toward the residual root side along the longitudinal center axis of the denture engagement protrusion.
The protruding portion for engaging the denture continues to receive the first elastic pressing force and the second elastic pressing force in a direction substantially orthogonal to the axial direction of the abutment tooth and facing each other during occlusion. Even in the above case, one abutment tooth supporting the denture is continuously sandwiched between the first elastic pressing force and the second elastic pressing force to maintain the mounted state of the denture on the abutment tooth. Ori,
By having a structure in which the denture wearer takes charge of the occlusal force generated by the denture by the compressive repulsive force generated by the entire denture base of the denture crushing the denture. The denture engaging protrusion supports the denture even during occlusion by continuing to receive the first elastic pressing force and the second elastic pressing force that are substantially uniform in the direction substantially orthogonal to the axial direction thereof. A single denture is continuously sandwiched from two locations facing each other in the circumferential direction with substantially equal elastic pressing force, and the denture is maintained in a mounted state on the denture even during occlusion, and the denture is maintained. When the denture wearer bites the denture, the occlusal force generated by the denture can be handled by the compression repulsive force from the denture generated by the entire denture base of the denture crushing the denture. It is a feature.

Further, the denture according to claim 2 of the present invention and its attachment attachment are
A denture having at least two dentures arranged side by side and having an elongated denture base with the plurality of dentures fixed at the top, and a denture having an attachment for attaching the denture to an abutment tooth. In its mounting attachment
The denture is provided with a bottomed abutment tooth accommodating recess for inserting and holding the abutment tooth at a predetermined position in the longitudinal direction on the bottom surface side in contact with the gingiva of the denture base, and the abutment tooth accommodating. A first latch engaging portion and a second latch engaging portion are provided at opposite positions on the inner peripheral surface of the recessed portion.
The attachment is attached to the residual root portion to form the abutment tooth, and the first engaging force that engages the denture wearer with the first latch engaging portion and the second latch engaging portion, respectively. It consists of a denture engaging protrusion on which a receiving portion and a second engaging force receiving portion are formed, and a fixing member for fixing the denture engaging protrusion to the residual root portion.
The abutment tooth is formed by attaching the prosthesis engaging protrusion to the residual root portion using the fixing member.
In a state where the denture is attached to the abutment tooth, the first engaging force receiving portion and the second engaging force receiving portion act on the first engaging force receiving portion from both sides of the denture engaging protruding portion. The denture is formed by the first elastic pressing force of the latch engaging portion 1 and the second elastic pressing force of the second latch engaging portion, and the adhesion force generated when the denture base of the denture is in close contact with the gingiva. A denture and its attachment attachment that maintain the attachment state to the abutment tooth.
The first engaging force receiving portion and the second engaging force receiving portion are positions facing each other in the circumferential direction on the peripheral surface of the denture engaging protrusion, respectively, and in the extending direction of the denture base. It is formed as a longitudinally extending engaging groove portion having a predetermined length in the longitudinal direction of the protruding portion for engaging the denture at the position facing the circumferential direction.
When the denture wearer occludes the denture, the first elasticity acting from the first latch engaging portion to the first engaging force receiving portion of the denture engaging protrusion according to the occlusal state. The denture engaging protrusion is opposed to the denture engaging protrusion in the circumferential direction by the pressing force and the second elastic pressing force acting on the second engaging force receiving portion of the denture engaging protrusion from the second latch engaging portion. While sandwiching it at two places, the position where the first elastic pressing force and the second elastic pressing force act is moved along the first engaging force receiving portion and the second engaging force receiving portion. During occlusal, the protruding portion for engaging the denture continues to receive the first elastic pressing force and the second elastic pressing force in a direction substantially orthogonal to the axial direction of the abutment tooth and facing each other. Also, one abutment tooth supporting the denture is continuously sandwiched between the first elastic pressing force and the second elastic pressing force to maintain the mounted state of the denture on the abutment tooth. ,
By having a structure in which the denture wearer takes charge of the occlusal force generated by the denture by the compressive repulsive force generated by the entire denture base of the denture crushing the denture. The denture engaging protrusion supports the denture even during occlusion by continuing to receive the first elastic pressing force and the second elastic pressing force that are substantially uniform in the direction substantially orthogonal to the axial direction thereof. A single denture is continuously sandwiched from two locations facing each other in the circumferential direction with substantially equal elastic pressing force, and the denture is maintained in a mounted state on the denture even during occlusion, and the denture is maintained. When a denture wearer bites the denture, the occlusal force generated by the denture can be handled by the compression repulsive force from the denture generated by the entire denture base of the denture crushing the denture. It is a feature.

Further, the denture according to claim 4 of the present invention is the denture according to claim 1 which is used only for the denture according to claim 1 and its attachment.

The denture according to claim 5 of the present invention is the denture according to claim 2, which is used only for the denture according to claim 2 and its attachment.

The denture engaging protrusion according to claim 6 of the present invention is the denture according to claim 3 , which is used only for the denture according to claim 3 and its attachment.

The denture engaging protrusion according to claim 7 of the present invention is the denture engaging protrusion according to claim 1, which is used only for the denture according to claim 1 and its attachment.
The denture engaging protrusion according to claim 8 of the present invention is the denture engaging protrusion according to claim 2, which is used only for the denture according to claim 2 and its attachment.
The denture engaging protrusion according to claim 9 of the present invention is the denture engaging protrusion according to claim 3 , which is used only for the denture according to claim 3 and its attachment.

Claims (9)

A denture having at least two dentures arranged side by side and having an elongated denture base with the plurality of dentures fixed at the top, and a denture having an attachment for attaching the denture to an abutment tooth. In its mounting attachment
The denture is provided with a bottomed abutment tooth accommodating recess for inserting and holding the abutment tooth at a predetermined position in the longitudinal direction on the bottom surface side in contact with the gingiva of the denture base, and the abutment tooth accommodating. A first latch engaging portion and a second latch engaging portion are provided at opposite positions on the inner peripheral surface of the recessed portion.
The first attachment is attached to a residual root portion to form the abutment tooth and engages the denture wearer with the first latch engaging portion and the second latch engaging portion, respectively. It is composed of a denture engaging protrusion on which an engaging force receiving portion and the second engaging force receiving portion are formed, and a fixing member for fixing the denture engaging protrusion to the residual root portion.
The abutment tooth is formed by attaching the prosthesis engaging protrusion to the residual root portion using the fixing member.
In a state where the denture is attached to the abutment tooth, the first engaging force receiving portion and the second engaging receiving portion act on the first engaging force receiving portion from both sides of the protruding portion for engaging the denture. The first elastic pressing force of the latch engaging portion, the second elastic pressing force of the second latch engaging portion, and the adhesion force generated when the denture base of the denture is in close contact with the gingiva of the denture. A denture and its attachment attachment, characterized in that it maintains its attachment to the abutment tooth. The first engaging force receiving portion and the second engaging force receiving portion are formed as engaging recesses at positions facing each other in the circumferential direction on the peripheral surface of the denture engaging protrusion, respectively, and the denture wearer. When the denture is attached, the first latch engaging portion and the second latch engaging portion engage with the first engaging force receiving portion and the second engaging force receiving portion, respectively. The first engaging force receiving portion and the second engaging force receiving portion are fitted to the first engaging force receiving portion and the second engaging force receiving portion, respectively, and the denture is fitted with the denture. When the wearer engages, the first latch engaging portion and the second latch engaging portion are separated from the first engaging force receiving portion and the second engaging force receiving portion, and the denture engagement is provided. The first latch engaging portion and the second latch engaging portion are moved to the vicinity of the residual root portion on the peripheral surface of the combined protrusion, and the first latch engaging portion and the second latch engaging portion are formed according to the magnitude of the occlusal force. While applying the elastic pressing force and the second elastic pressing force, the denture can be further moved on the peripheral surface of the denture engaging protrusion toward the residual root portion.
The denture engaging protrusion continues to receive the first elastic pressing force and the second elastic pressing force in a direction substantially orthogonal to the axial direction thereof and facing each other, so that the denture can be engaged even during occlusion. 1. The denture is characterized in that the one abutment tooth supporting the denture is continuously sandwiched between the first elastic pressing force and the second elastic pressing force to maintain the mounted state of the denture on the abutment tooth. Dentures and their mounting attachments as described in. The first engaging force receiving portion and the second engaging receiving portion are composed of a longitudinally extending engagement region having a predetermined length in the longitudinal direction of the denture engaging protrusion.
When the prosthesis wearer occludes the prosthesis, the first elasticity that acts from the first latch engaging portion to the first engaging force receiving portion of the prosthesis engaging protrusion according to the occlusal state. The pressing force and the second elastic pressing force acting on the second engaging force receiving portion of the artificial tooth engaging protrusion from the second latch engaging portion are the first elastic pressing force and the second elastic pressing force. The position where the elastic pressing force acts is moved along the first engaging force receiving portion and the second engaging force receiving portion, and the prosthesis engaging protrusion is in a direction substantially orthogonal to the axial direction thereof. By continuing to receive the first elastic pressing force and the second elastic pressing force in the directions facing each other, one abutment tooth that supports the artificial tooth even during occlusion is referred to as the first elastic pressing force. The artificial tooth and its attachment attachment according to claim 1, wherein the artificial tooth is continuously sandwiched by the second elastic pressing force to maintain the attachment state of the artificial tooth to the abutment tooth. A claim characterized in that when the denture wearer occludes the denture, the occlusal force generated by the occlusal force is handled by the compression repulsive force from the gingiva generated by the entire denture base of the denture crushing the gingiva. The denture and its attachment attachment according to item 2 or claim 3. The denture according to any one of claims 1 to 4, wherein the abutment tooth is formed based on an implant implanted in the jawbone instead of being formed based on the residual root portion. Mounting attachment. A claim for detachably attaching the denture engaging protrusion according to any one of claims 1 to 4 to an abutment tooth formed based on the residual root portion according to any one of claims 1 to 4. The denture according to any one of items 1 to 4. Any of claims 1 to 4, wherein the denture engaging protrusion according to any one of claims 1 to 4 is removably attached to an abutment tooth formed based on the implant according to claim 5. The denture described in the claim. The denture that covers the residual root portion to form the abutment tooth according to any one of claims 1 to 4, wherein the denture according to any one of claims 1 to 4 can be detachably attached. Combined protrusion. The denture engaging protrusion to be placed on an implant to form the abutment tooth according to claim 5, wherein the denture according to any one of claims 1 to 4 can be detachably attached.

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