JPH02243140A - Attachment for supporting artificial tooth mountably outside mouth - Google Patents

Abstract

PURPOSE: To obtain an attachment for easily and detachably supporting an artificial tooth into a mouth by the method wherein both ends of an anchor member are formed as a concave shape, and the projected portion of a detachably fixing an artificial tooth member is provided. CONSTITUTION: An anchor member 10 is formed by taking a mold after permanently installing an artificial column, a concave portion 28, 30 is formed at around a member end portion 22, 24. An artificial tooth member 34 is almost continuously connected to the remote surface 18 of the anchor member 10, and an end portion 36, 38 provides an integrally projected portion 40, 42, and is slidably inserted into the concave portion 28, 30 of the anchor member. If the artificial tooth member is directly pulled up, but is impossible to take off the tooth member when the projected portions 40, 42 is coupled into the concave portion 28, 30, because the tooth member provide the shape of pulling up ahead along the axis 32 of the concave portion. When the tooth member is used, the artificial tooth is restricted in a gum portion 48 by moving an arm 52 to a close portion after the artificial tooth is simultaneously inserted rear downwardly, the projected portion 40, 42 is elongated into the concave portion 28, 30, and the artificial tooth is positioned below. A finger nail-shaped coupling portion 62 of the arm is made at a releasing portion by rotating the arm 52 when the artificial tooth is taken off. Therefore, the attachment capable of easily and detachably attaching the artificial tooth can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to means for removably supporting dentures within a user's mouth.

The use of dentures has always been a problem when imperial emperors have lost all of their natural teeth, either upper or lower, especially the lower ones. Although dentures can be precisely fitted to the user's alveolar ridges, it is difficult to hold the dentures in place. Namely: 1 During normal chewing or speaking, the denture tends to rise from the alveolar ridge, making speech difficult, chewing difficult and making the use of the denture unsatisfactory.

In recent years, techniques have been developed to permanently implant teeth within the bony structure of the mouth. This permanent metal post is usually made of titanium and adapts to the human body's biological processes and is locked in place by bone growth. The use of permanent posts in the user's mouth facilitates securing the capsular tooth in place.

, H's η′ Be! The present invention provides a new attachment that removably supports a denture in a user's mouth, and uses implants to secure the denture, but the denture can be easily installed and removed in the user's mouth. The goal is to create a structure with less stress on the plants.

- The attachment according to the present invention for use in the user's mouth includes an anchor member semi-permanently attached to the teeth in the user's mouth with screws or the like.

In a typical construction, the user has at least two teeth; the anchor member is preferably a casting formed using a mold taken from the user's mouth after the teeth have been implanted. In a first embodiment, the anchor members are generally U-shaped and lie in a common plane. The υ-shaped anchor member has both ends and a central part. The central portion is formed by a bar portion that extends between adjacent spaced teeth and is generally circular.

The anchor member has a proximal surface facing the user's alveolar ridge and an opposite distal surface.

The matching denture member is also cast and generally conforms to the distal surface of the anchor member. In this U-shaped embodiment, the denture member conforms to the shape of the alveolar ridges of the user's mouth. The U-shape is in a common plane, and the anchor member has restraint means at both ends. The restraining means is in the form of recesses at both ends of the anchor member. Each recess has an opening, the axis of which is inclined with respect to the plane of the anchor member in a direction toward the center of the anchor member.

The denture member has a restraining means and is in the form of an integral projection configured to removably engage a recess in the anchor member.

The protrusions each have an axis of insertion and are angled relative to the plane of the U-shaped denture component. The dimensions of the recess and the projection are such that the projection can have limited movement within the recess.

The denture member is enclosed within a denture having simulated gums and teeth.

The denture component thus becomes integral with the denture.

When the denture is inserted into the user's mouth, an integral projection extending from the end of the denture member removably extends into a recess in the anchor member such that the rear portion of the denture is restrained and confined in position. enable movement.

One end of the arm is pivoted near the center of the denture member.

The arm has a blade portion and the arm pivots between a locked position and a released position. When in the released position, the arm extends outwardly away from the central portion of the denture member, and when in the locked position, the arm pivots toward the central portion and the blade extends beneath the bar portion of the anchor member. . Thus, when the denture containing the cast denture member is positioned in the user's mouth, the integral protrusion is loosely engaged within the recess of the anchor member, the five arms are engaged in the locking position, and the blades of the arms are engaged with the anchor member. It extends under the bar portion of the member to lock the denture in the user's mouth.

Allows limited rotation around the bar portion of the denture.

The outer end of the arm has a fingernail engagement portion. When the user wants to remove the denture, engage the user's fingernails on the arm and rotate it to the released position, raising the front of the denture upward and pushing the integral protrusion of the denture member out of the recess of the anchor member. The entire denture can be easily removed from the user's mouth.

According to another embodiment of the present invention, at least two (hard teeth) are used at the front of the user's mouth, and the two teeth are spaced apart from the center of the mouth on either side. forming an integral part of the member, the bar being approximately circular in cross-section;
It lies in a plane perpendicular to the length of the bar.

The denture member is compatible with the anchor member and is removably attached to the bar portion as described above. The denture in which the denture member is cast can freely rotate about the cylindrical bar. A backward rotation of the front of the user's mouth is preferred as described above. That is, if the alveolar ridge rotates backward during mastication, etc., the alveolar ridge absorbs the pressure of the denture. This removes most of the stress from the teeth.

That is.

By allowing the denture to rotate, no torsional action is exerted on the post and no loosening of the post occurs due to the action of the denture.

On the other hand, forward rotation of the denture is undesirable beyond a small limit. To this end, the anchoring member is provided with an integral trunnion portion extending in the direction of the plane of the anchoring member, in the preferred example approximately at right angles to the bar. l! The tooth member has an interceptor and is shaped to engage the trunnion member when the denture member rotates at a predetermined angle toward the front of the user's mouth about the bar. This prevents the denture from rising forward beyond a minimum angle and does not limit backward rotation. Limiting forward rotation is important for controlling dentures, especially mandibular dentures.
l! Prevents interference with the user's speech due to excessive elevation of the teeth. At the same time, downward rotation is possible, the alveolar ridge absorbs the masticatory force, and excessive stress is not applied to the teeth.

backyard± The present invention will be explained with reference to embodiments and drawings.

An attachment for removably supporting a prosthesis according to the invention in a user's mouth is formed from two basic parts. 1st
1 is an anchor member 1o, which is shown in FIG. 1 for the lower tooth row. The anchor member 10 is of a type that is attached to a tooth permanently attached in the user's mouth. The teeth can be attached to the bone of the user's mouth, for example, by drilling a hole in the bone and inserting or screwing the post into the bone. Other means of securing the post to the user's mouth are also known.

The teeth usually have threaded recesses, and the anchor member 10 shown in FIG. 1 is secured to the teeth by springs e12.

The alveolar ridge 14 of the user's jaw is shown.

After the teeth are permanently attached, a mold of the user's mouth is taken to form the anchor member 10. Using this mold, the anchor member is cast of metal and has a transparent surface 16 proximate the top surface of the patient's alveolar ridge 14 and a receptacle 18 on the opposite side of the transparent surface, as shown in FIG. Figure 4 is 21! The teeth 20 and screw 12 of j are shown.

As shown in FIG. 1, the anchor member 1o is generally U-shaped and generally conforms to the shape of the alveolar ridge 14 of the user's mouth. U
The mold shape forms a front or intermediate section 28 between the post end 22.24 and the intermediate spaced teeth of the end 22.24. The front portion forms a bar portion 26 extending across the front portion of the anchor member.

Recesses 28, 30 are formed near the anchor member ends 22, 24 as deterrent means. As mentioned above, the anchor member 1
0 is approximately U-shaped and approximately flat. Each recess 28.30
has an axis, the axis 32 of the recess 30 being shown in FIG. 4, the axis of each recess being oblique to the plane of the anchor member. This angle is acute towards the front bar portion 2G of the anchor member.

The other basic part of the attachment is the denture member 34, a plan view of which is shown in FIG. Like the anchor member, the denture member 34 is generally U-shaped and lies in a common plane, such that the denture member 34 is in substantially continuous contact with the anchor member canister 18. The ends 36, 38 of the denture member preferably have integral projections 40.
It has 42. Each projection has an axis, with axis 44 of projection 42 shown in dotted lines in FIG.

The axis of each projection 40 , 42 forms an acute angle with the plane of the prosthesis member 34 and is approximately equal to the angle of the axis 32 of the anchor member 10 . The shape of the protrusion 40.42 is such that it is slidably inserted into the recess 28.30 of the anchor member and, when engaged in the recess, cannot be removed by pulling the denture member directly upwards and along the axis 32 of the recess. It needs to be pulled upwards and forwards.

The denture member 34 is housed within a denture 46 shown in Figure 3.4. The denture includes a fake gingival portion 48 and teeth 50. Dentures 48
When housed therein, the denture member 34 exposes its lower surface and engages the anchor member when the denture is installed. The denture member 34 is small (approximately U in the front central part as shown in FIG.
It is a holy cross-sectional shape, 1! The other portion of the tooth member generally conforms to the circumference of the anchor member.

A first
An arm 52 having an end 54 and a second end 56 is secured. A first end 54 of arm 52 is pivoted to denture member 34 by pivot pin 58 . From the arm 52 to the blade portion 60
extends as a whole. Second end 56 of arm 52 has a fingernail engaging portion 62 .

To use a denture having an attachment member 34 in combination with an anchor member fixed to the teeth in the user's mouth,
The denture is inserted into the anchor member 10 as shown in FIG. That is, the denture is inserted posteriorly and downwardly at the same time, and the protrusion 40.
42 extends into the recesses 28,30. The front portion of the denture 48 moves downward and the denture member contacts the upper surface of the anchor member 10. During installation, the arm 52 is in the open position shown in FIG. 2.3. After the denture has been positioned downwardly, the arm is moved to the closed position shown in Figures 4 and 5. In the closed position the arm is almost completely restrained within the gingival portion 48 of the denture. The fingernail engaging portion 62 of the arm extends slightly from the plane of the denture gingival portion 48 so that when a user removes the denture, the user can extend the fingernail under the portion 62 and rotate the arm 52 to the release position. .

Denture portion 34 has an integral portion 348 under arm 52 to support the arm in the closed position.

When the user has attached at least two teeth, the attachment becomes a highly effective means of anchoring the denture within the user's mouth.

Figures 9-15 show other embodiments of the invention. This embodiment requires only two posts 20, but other posts can also be used. 2 (1! The essential pillars are in front of the user's mouth, as shown in Figure 10, in a preferred example, equidistant on both sides of the center of the mouth.
Another post can be used for anchoring the anchor member 10A. However, when another post is used, it will be behind the two spaced posts 20.

Anchor member 108 attaches to post 20 with screws as described above and includes an integral bar portion 26B extending between the two portions.
Bar portion 26B is an integrally formed short trunnion 26
C, 26D. The trunnion extends into the plane of the bar portion 26B of the anchor member and perpendicular to the longitudinal axis of the bar portion.

Denture member 34B is shorter than the denture member shown in Figures 1-8, but is similarly used. That is, the denture member 34B is the 12th
-15 and is housed within the denture 48 shown in FIG. The denture member 34B has an integral construction and is adapted to be connected to the anchor member 10 in a long way. Denture member 34B includes an arm 52 having a first end 54 and a second end 56 as described above.
is pivoted to the denture member 34B by a pivot pin 58. A blade portion 60 extends integrally from the arm 52. The second end 56 of the arm has a fingernail engaging portion 62 . Additionally, the denture member 34B has raised portions 34C and 34D at both ends that integrally extend forward.

When denture member 34B is engaged with anchor member 10A, ridges 34C and 34D are connected to trunnion 26 of the anchor member.
G, extends parallel to 260. The denture member 34B is
When engaged with the denture as shown, the denture is locked by arms 52 in the same manner as described above.

The embodiment shown in Figures 9-15 has different means for limiting rotation of the denture relative to the anchor member 10. This rotation limiting means consists of trunnions 26C, 26D and protuberances 34C and 34D.
This is done through the joint efforts of Denture member 34B and anchor member 1
The dimension 0A is such that when the denture 48 having the denture member 34B is positioned in the user's mouth, the denture 4
The downward pressure acting on 8 results in the denture rotating about the bar portion 26B of the anchor member. The force of the river action is applied to the rear part of the user's alveolar ridge by the denture member, and no torque is applied to the anchor member 10A and no torque is applied to the post 20. Thus, the external force of the lateral movement of the post is relieved by the rotational action of the denture on the post. but,
At the same time, the denture is prevented from rising at the rear. That is.

The engagement of ridges 34G, 340 with trunnions 26C, 260 prevents unrestricted forward rotation of the denture about anchor member bar portion 26r3. Thus.

The ridge and trunnion combination limits rotation of the denture in one direction, but not in the opposite direction, in which direction the alveolar ridge absorbs the force of the user's lifting action.

In application of the embodiment of FIGS. 9-15, the denture will have an appearance similar to that of FIG. That is, arm 52 is pivoted forward in FIG. 3 to remove the denture, and pivoted to the closed position and locked as shown in FIG. 9. In the closed position, only the small fingernail engaging portion 62 protrudes beyond the surface of the denture, allowing removal by the user.

The embodiment of Figures 9-15 has the same advantages as the embodiment of Figures 1-8. That is, the denture attachment structure allows the rotation of the denture to be movable, so that the user's alveolar ridge absorbs the force of Chuan Ming and at the same time limits the upward rotation of the denture. The primary difference between the embodiment of Figures 9-15 and the embodiment of Figures 1-8 is the manner in which upward rotation of the denture is limited. Another advantage of the embodiment of Figures 9-15 is that the anchor member +OA is significantly shorter.

In the present adiF, the words and phrases described in the claims are the same as the words and phrases used in the manifesto. The same phrases in known documents have a broader meaning than given in the specification. With broad definitions of words used in known literature.

When a question arises about a particular word or phrase in this specification, the meaning of the particular word or phrase shall prevail.

The present invention can be modified in various ways, and the embodiments and drawings are illustrative and do not limit the invention.

[Brief explanation of drawings]

FIG. 1 is a plan view of the anchor member portion of an attachment that removably supports a denture in the user's mouth. Figure 3 shows a plan view of a metal-cast denture component that is attached to a denture with an alveolar bulge in the mandible; FIG. 2 is an exploded view of the two-piece denture and the anchor member fixed to the teeth permanently installed in the user's jawbone, and also shows the direction in which the denture is inserted into the anchor member and locked in the user's mouth. , FIG. 5 is a front view of a cross section of the front part of the user's mouth, FIG. 12 is a plan view of a denture member combined with the anchor member of FIG. 10.11, and FIG. 1
A cross-sectional view of the denture member along line 3, Fig. 14 is Fig. 12.13.
A front view of the denture component shown in the figure, Figure 15 is 12.13°14
FIG. 3 is a bottom view of the denture component shown in the figure. 101. Anchor member 148. Alveolar ridge 200. Teeth 268. Bar part 28, 30. ,, recess 341.
Denture member 40.42. ,,Protrusion 480. Simulated gingival area 500. Teeth 521. Arm 581. Pivot pin 601.
Blade portion 628. Fingernail engaging portion 26B, , Bar portions 26C, 26D, , Trunnion 34B, , ,
FIG. 9 is a partial bottom view along the denture member showing the central portion of the denture member and the arms in the released position; FIG. 9 is a partial cross-sectional view of another embodiment of the present invention; Partial plan view showing the front part of the mouth, Figure 11 is an engraving of the two sides of the anchor attached to the two teeth in the user's mouth (no change in content) Procedural amendment 1゜Representation of the incident 1999 Patent Application No. 28465Q2, Name of the Invention Attachment for removably supporting dentures in the mouth 3° Person who makes the correction/Relationship with the case Patent Applicant Address Name Ralph C. Mays 4, Agent Address 2 Otemachi Building, former No. 2-1, Daif-cho 2, Choyoda-ku, Tokyo, 206-ku 5, subject of correction Appropriate drawing embroidery +l: σ■n゛fire

Claims (1)

[Claims] 1. An attachment for removably supporting a denture in a user's mouth, the attachment comprising at least two spaced teeth mounted in alveolar ridges on both sides of the front center of the user's mouth. and an anchor member that fits within the user's mouth and is attached to two spaced apart posts in the front of the user's mouth with screws or the like,
The anchor member includes a bar portion extending between the two spaced apart portions, and includes a denture member substantially conformable to the anchor member and engageable proximate the bar portion of the anchor member, the denture member being in contact with the simulated gingiva and teeth. The denture member is removably and rotatably interlocked with the bar portion of the anchor member when the denture with the denture member formed therein is in a use position in the user's mouth. locking means formed as part of the anchor member and the denture member to limit the angle of rotation relative to the anchor member about the bar portion in one direction of the denture member when the denture member is interlocked with the anchor member; An attachment for removably supporting a denture in the mouth, characterized by being equipped with movement limiting means. 2. The attachment of claim 1, wherein the bar portion of the anchor member is elongated and has a longitudinal axis, and the bar portion is partially substantially circular in a plane perpendicular to the longitudinal axis. 3. The locking means is in the form of an arm having a first and a second end, the first end being pivotally supported on the denture member to enable the arm to rotate between a locking position and a release position; a blade portion near the second end; a fingernail engaging portion at the second end;
This allows the user to engage the second end with a fingernail to rotate the arm to the release position, and when the arm is rotated to the lock position, the blade portion engages the bar portion of the anchor member. Attachment described in item 1. 4. The rotation limiting means includes: a trunnion means extending from the anchor member; and an interceptor means extending from the denture member and engaging the trunnion means when the denture member rotates by a predetermined angle about the bar portion of the anchor member. The attachment according to claim 1, comprising: 5. The attachment according to claim 1, wherein the rotation limiting means includes means for limiting rotation of the denture member in one direction about the anchor member and not limiting rotation in the other direction. 6. The rotation limiting means includes means for limiting the rotation of the denture member in the direction toward the front of the user's mouth, but not limiting the rotation of the denture member in the opposite direction from the front of the user's mouth. attachment.