TWI780001B - Tooth extraction aids and tooth extraction kits - Google Patents

Abstract

[Problem] It is to provide an extraction aid, etc., which can reduce the burden on the tooth to be extracted, the alveolar bone at the site, and/or the adjacent teeth. [Solution] A tooth extraction aid (1) having a first auxiliary base (11) and a second auxiliary base (12) is used. The first auxiliary base (11) is inserted into the recess (X0) formed in the tooth (X2), and the second auxiliary base (12) is locked to the first auxiliary base (11). Thereby, in the state where the first auxiliary base (11) is pressed against the tooth (X2), force is applied to the tooth extraction aid (1) through the second auxiliary base (12), and the tooth (X2) is lifted from the gum ( X1) Pull out.

Description

Tooth extraction aids and tooth extraction kits

The present invention relates to tooth extraction aids.

In the case of tooth extraction in dental treatment, generally speaking, between the tooth and the alveolar bone, the tooth extraction pole is inserted into the periodontal ligament around the root of the tooth to dislocate the tooth, and then the dental extraction forceps are used Teeth are caught and extracted (for example, refer to Patent Documents 1 and 2).

However, if the tooth is pressed in by mistake while prying the tooth with the extraction stile, it may cause nerve damage or blood vessel damage, which may lead to increased bleeding, or the alveolar bone may be sunken.

Therefore, the inventors of the present invention propose a tooth extraction aid that can perform tooth extraction more safely and easily (for example, refer to Patent Document 3). The tooth extraction aid is provided with a screw part screwed into the teeth and a handle part, and an anti-slip part is formed on the handle part. Hold the handle part, screw the screw part into the hole in the center of the tooth, and after the screw part firmly bites into the tooth, apply force to the handle part to pull the tooth out of the gum. If there is a torsional force acting on the root of the tooth, the tooth will float from the alveolar bone more easily, so the tooth can be extracted easily. Therefore, it is not necessary to use a tooth extraction bar during tooth extraction, and the force of tooth extraction will only be applied to the tooth to be extracted, so it is rarely affected by or affects adjacent teeth, so it is safe (for example, Refer to Patent Document 4). [Prior Art Literature] [Patent Document]

[Patent Document 1] Japanese Patent Laid-Open No. 2002-291753 (FIG. 1) [Patent Document 2] Japanese Patent Laid-Open No. 2009-119095 (FIG. 15) [Patent Document 3] Japanese Utility Model Registration No. 3162169 [Patent Document 4] Japanese Utility Model Registration No. 3162226

[Problem to be solved by the invention]

However, since the screw portion must surely bite into the tooth, it is inevitable that a force in a twisting direction will be applied to the tooth at this time. Even so, when screwing the screw part into the hole in the center of the tooth by the handle part and firmly biting into the tooth for fixation, it is better not to apply too much force in the direction of twisting to the tooth.

Therefore, an object of the present invention is to provide an extraction aid that can reduce the burden on the tooth to be extracted, the alveolar bone at the site, and/or the adjacent teeth. [Technical means to solve the problem]

The tooth extraction aid of the first form of the present invention comprises: The first auxiliary base is inserted into the recess formed in the tooth; 2nd auxiliary matrix; A slit for dividing the front end portion and a through hole extending from the rear end portion to the front end portion are formed on the first auxiliary base body, and a female screw portion is formed on the inner surface of the first auxiliary base body, The second auxiliary base has a head, and a male thread portion extending from the head is formed on the second auxiliary base, The male screw portion of the second auxiliary base is screwed to the female screw portion of the first auxiliary base, the head is rotated to lock the second auxiliary base to the first auxiliary base, and the slit is expanded. , whereby the front end portion of the first auxiliary base divided by the slit is expanded.

The dental extraction aids with the aforementioned composition are preferably: In the first auxiliary base, the through hole is formed so as to reduce in diameter at least from the middle to the tip.

The dental extraction aids with the aforementioned composition are preferably: In the first auxiliary base, the female thread portion is formed such that the root diameter decreases from at least halfway to the front end.

The dental extraction aids with the aforementioned composition are preferably: A protrusion is formed on the outer surface of the first auxiliary base.

The tooth extraction aid of the second aspect of the present invention comprises: The first auxiliary base is inserted into the recess formed in the tooth; 2nd auxiliary matrix; A hole extending from the rear end and a communication hole connecting the hole to the external space are formed in the first auxiliary base, a female thread portion is formed on the inner surface of the first auxiliary base, and a filling hole is provided in the hole. capsules with adhesive, The second auxiliary base has a head, and a male thread portion extending from the head is formed on the second auxiliary base, The male thread portion of the second auxiliary base is screwed to the female thread portion of the first auxiliary base, the head is rotated to lock the second auxiliary base to the first auxiliary base, and the capsule is broken, Thereby, the adhesive agent flows out to the outside of the first auxiliary base through the communication hole.

The tooth extraction appliance set of the present invention is constituted by the following: the aforementioned tooth extraction auxiliary appliance of the present invention; and The tooth extraction tool is formed with an engaging portion that is guided to the gap between the second auxiliary base and the tooth when the first auxiliary base is inserted into the concave portion formed on the tooth, and engages. On the aforementioned head of the aforementioned second auxiliary base.

The tooth extraction appliance set with the aforementioned composition is preferably: The aforementioned tooth extraction appliance comprises: a first base extending in the longitudinal direction; and a second base connected to one end of the first base in the longitudinal direction and inserted into the patient's oral cavity, Among the engaging holes constituted by the first hole and the second hole, at least one of them is formed in the aforementioned second base as the aforementioned engaging portion; The engagement notch and the second base allow the passage of the second auxiliary base; the second hole is configured so that the second auxiliary base cannot pass through and is continuous with the first hole.

The tooth extraction appliance set with the aforementioned composition is preferably: The second base of the tooth extraction tool is formed in a convex shape, and the bottom of the second base is formed in a flat shape, or formed in a convex shape with a smaller curvature than the periphery of the second base. [Effect of Invention]

According to the tooth extraction aid and the tooth extraction aid set of the present invention, a recess (cavity or depression) is formed on the tooth to the extent that the first auxiliary base can be inserted, and the first auxiliary base is inserted into the recess. , the hot-melt adhesive injected into the recess is solidified, and the second auxiliary base 12 is locked to the first auxiliary base. Thereby, the first auxiliary base 11 is expanded to be crimped and fixed to the teeth. Afterwards, force is applied to the second auxiliary base, whereby the tooth can be easily pulled out from the gum. Thereby, the burden on the tooth to be extracted and the adjacent teeth can be reduced.

(first embodiment) (constitute)

A tooth extraction aid 1 as a first embodiment of the present invention shown in FIG. 1 includes a first auxiliary base 11 and a second auxiliary base 12 . The material of the tooth extraction aid 1 can be selected arbitrarily, but it can be formed of nickel-titanium alloy, for example.

The first auxiliary base 11 is formed in a substantially truncated cone shape (more specifically, a shape in which a cone with a smaller inclination than the truncated cone is formed continuously on the upper bottom surface of the truncated cone). A through hole (or a hole continuous with the slit 110 ) extending in the axial direction from the rear end to the front end is formed in the first auxiliary base 11 . The size of the first auxiliary base 11 is, as shown in FIG. 4 , designed to be inserted into the recess X0 penetrating through the crown of the tooth X2 with the root embedded in the gum X1. The shape of the first auxiliary base 11 may be approximately ellipsoidal, approximately hemispherical, approximately cubic, approximately rectangular parallelepiped, approximately cylindrical, approximately prismatic, approximately conical, approximately pyramidal, or approximately truncated cone, in addition to approximately spherical. Or approximately truncated pyramid shape, or various shapes combining these shapes. This is also the same in other embodiments.

A slit 110 that divides the front end portion into two is formed at the front end portion of the first auxiliary base 11 . The front end portion of the first auxiliary base 11 may be divided into three or more by the slit 110 . On the outer surface of the first auxiliary base 11, a protrusion 111 is formed that protrudes outward in the radial direction while continuously extending in the axial direction in a helical shape. The shape, size, number, and arrangement of the protrusions 111 can also be changed in various ways. A female thread portion 112 is formed on the inner surface (side surface of the through hole) of the first auxiliary base 11 .

The communication hole of the first auxiliary base body 11 is designed to gradually reduce in diameter from the rear end or in the middle to the front end. This is to press the first auxiliary base 11 outward in the radial direction by the front end of the second auxiliary base 12 as the male thread portion 122 of the second auxiliary base 12 advances toward the female screw portion 112 of the first auxiliary base 11 . A structure in which the diameter of the end portion of the first auxiliary base 11 before being divided by the slit 110 is gradually enlarged.

The root diameter of the female thread portion 112 may also be designed to gradually decrease in diameter from the rear end to the front end of the first auxiliary base 11 . This is to follow the male thread portion 122 of the second auxiliary base 12 advancing toward the female thread portion 112 of the first auxiliary base 11, and the threads of the male thread portion 122 press the root of the female thread portion 112 radially outward, It is a structure in which the diameter of the front end portion of the first auxiliary base 11 is gradually enlarged.

The second auxiliary base 12 is formed in a shape in which a substantially spherical head 121 having a larger diameter than the cylinder continues at one end of the substantially cylindrical shape. On the top of the head portion 121, an engaging portion for engaging with a tool such as a screwdriver or a wrench is formed. The shape of the head 121 may be not only approximately cylindrical or approximately disc-shaped, but also approximately regular polygonal plate-shaped, approximately spherical, approximately ellipsoidal, approximately hemispherical, approximately cubic, approximately rectangular parallelepiped, approximately cylindrical, approximately A prism, a substantially conical shape, a substantially pyramidal shape, a substantially truncated cone shape, or a substantially truncated pyramid shape, or various shapes combining these shapes. This is also the same in other embodiments.

On the side surface of the second auxiliary base 12, a male screw portion 122 screwed to the female screw portion 112 of the first auxiliary base 11 is formed.

In FIG. 2 , a tooth extraction tool 2 constituting a tooth extraction tool set together with the tooth extraction auxiliary tool 1 shown in FIG. 1 is shown. As shown in Figure 2, the tooth extraction tool 2 is equipped with: the first base body 21 is elongated and flat in plan view; The bottom is roughly oblong or roughly oval.

At the other end portion of the first base body 21, a hole 210 is formed as a threading portion or the like. Although the second base 22 is formed in a convex shape like a spoon as a whole, the bottom 220 is formed flat or substantially flat (meaning that the curvature of the second base 22 is smaller than that of its surrounding parts). At the front end of the second base body 22, an engaging notch 221 for dividing the front end into two forks is formed. At the rear end portion of the second base body 22, an engaging hole 222 is formed, which is a substantially circular hole with a larger diameter than the head portion 121 of the second auxiliary base body 12 of the tooth extraction aid 1, and a hole continuous to the hole. A substantially rectangular hole whose rear width is smaller than the diameter of the head portion 121 of the second auxiliary base 12 is formed. Although the engagement notch 221 reaches the edge of the second base 22 , the engagement hole 222 does not reach the edge of the second base 22 (the continuous portion with the first base 21 ). In place of the engaging notch 221 , an engaging hole similar to the engaging hole 222 may be formed at the front end of the second base body 22 .

(Instructions) Next, a method of using the tooth extraction aid 1 and the tooth extraction tool 2 configured as described above will be described. First, as shown in FIG. 4 , a concave portion X0 having a size in which the first auxiliary base 11 can enter is formed on the crown of the tooth X2 by a cutting tool. After that, the front end of the male thread portion 122 is screwed to the female thread portion 112, whereby the tooth extraction aid 1 in the state of screwing the first auxiliary base 11 and the second auxiliary base 12 is guided to the patient's oral cavity, and The first auxiliary base 11 is inserted into the recess X0 (FIG. 3/STEP11).

Next, the second auxiliary base 12 is relatively rotated with respect to the first auxiliary base 11 through the head 121 using an appropriate tool. Thereby, the male thread portion 122 advances toward the front end portion of the first auxiliary base 11 . At this time, the first auxiliary base 11 may be rotated inside the recess X0 of the tooth X2, and the helical protrusion 111 may be bitten or hooked on the tooth X2 to stop. Correspondingly, the second auxiliary base 12 presses the first auxiliary base 11 outward in the radial direction, expands the slit 110 , and gradually expands the diameter of the front end of the first auxiliary base 11 . Thereby, the protruding portion 111 formed on the outer surface of the first auxiliary base 11 bites into the tooth X2 or its crown defining the concave portion X0, so that the first auxiliary base 11 is fixed to the tooth X2 (FIG. 3/STEP12).

And, the operator who grasps the first base body 21 of the tooth extraction appliance 2, as shown in FIG. On the upper surface part, the engaging hole 222 of the second base body 22 is hooked to the head portion 121 of the second auxiliary base body 12 of the extraction aid 1 . Then, the tooth X2 is pulled out from the gum X1 together with the tooth extraction aid 1 by moving the tooth extraction tool 2 away from the gum X1 (see FIG. 3 / STEP13).

With the flat or substantially flat bottom 220 of the roughly spoon-shaped second base 22, not only the upper surface portion of the dentition, but also the corners of the dentition can be searched by the operator. Since the corners of the teeth and the steps of the dentition can be found, the operator can respond to the patient's difficulty in opening the mouth and/or the shape of the mouth, as well as the operator's posture, the patient's tooth arrangement and/or occlusion, etc. situation.

The operator holding the first base 21 of the tooth extraction appliance 2 can also use the bottom 220 of the second base 22 to find the tooth adjacent to the tooth X2 (in terms of the opposite direction of the insertion direction of the second base 22 into the oral cavity). The upper surface portion of the row is hooked to the head portion 121 of the second auxiliary base 12 of the extraction aid 1 by the engaging notch 221 at the front end of the second base 22 . In addition, the first base 21 of the tooth extraction tool 2 can be pressed to extract the tooth X2 from the gum X1 together with the tooth extraction auxiliary tool 1 .

In this way, the influence of the teeth adjacent to the tooth X2 can be reduced, and the tooth extraction can be performed safely, stably and easily, thereby reducing the burden on the patient and the operator in performing tooth extraction. Since the shape of the second base body 22 is substantially elliptical in plan view, when the second base body 22 is inserted into the oral cavity of the patient, the sense of resistance is low, and it is also possible to feel relieved in this regard.

The operator may hold the tooth extraction aid 1 on the head portion 121 of the second auxiliary base 12 with fingers to extract the tooth X2 from the gum X1.

(Modification of the first embodiment) In Fig. 6, a dental extraction assisting tool 1 as a modified example of the first embodiment of the present invention is shown. Compared with the tooth extraction aid 1 shown in FIG. 1 , the configuration of the head portion 121 of the second auxiliary base 12 is different. The other parts are the same as the tooth extraction aid 1 shown in Fig. 1, so the same symbols are used for the same components, and the description is omitted. The head 121 is substantially disc-shaped, and on its outer surface, a concave strip 1210 is formed, which is recessed inward in the radial direction while extending in the axial direction.

When holding the second auxiliary base 12 on the head 121 with the thumb, the index finger and/or the middle finger, and then applying a rotational force or a twisting force to its central axis, it is possible to prevent the finger and the second auxiliary base 12 from slipping due to saliva or the like. . When the tooth X2 floats from the gum X1 due to the twist applied to the tooth X2, the tooth X2 is extracted from the gum X1 while the second auxiliary base 12 is clamped by fingers or the jaws of the tooth extraction forceps. out (tooth extraction). It is also possible to use tooth extraction appliance 2 to extract teeth.

(Second Embodiment)

(constitute) The tooth extraction aid 1 shown in FIG. 7 as the second embodiment of the present invention is different from the tooth extraction aid 1 shown in FIG. 1 as the first embodiment of the present invention in that the structure of the first auxiliary base 11 is different. . The other parts are the same as the tooth extraction aid 1 shown in Fig. 1, so the same symbols are used for the same components, and the description is omitted.

The first auxiliary base 11 is formed in a substantially truncated cone shape (more specifically, a shape in which a cone with a smaller inclination than the truncated cone is formed continuously on the upper bottom surface of the truncated cone). In the first auxiliary base 11, a hole extending from the rear end in the axial direction is formed, and a communication hole 114 is formed, extending from the bottom of the hole radially outward or sideways, and passing through the opening of the first auxiliary base 11. The side opening communicates with the outside. The communication hole 114 may also be formed to extend from the bottom of the hole in the axial direction, and communicate to the outside through the opening at the front end of the first auxiliary base 11 . At the bottom of the hole, there is a capsule filled with adhesive M.

The slit 110 is not formed at the front end portion of the first auxiliary base 11 . On the outer surface of the first auxiliary base 11, a protrusion 111 is formed that protrudes outward in the radial direction while continuously extending in the axial direction in a helical shape. The shape, size, number, and arrangement of the protrusions 111 can also be changed in various ways. A female thread portion 112 is formed on the inner surface (the side surface of the hole extending in the axial direction) of the first auxiliary base 11 . The root diameter of the female thread portion 112 is designed to be constant from the rear end to the front end of the first auxiliary base 11 . This is because it is not necessary to expand the diameter of the first auxiliary base 11 in this embodiment.

(Instructions) Next, a method of using the tooth extraction aid 1 and the tooth extraction tool 2 configured as described above will be described. First, a concave portion X0 having a size in which the first auxiliary base 11 can enter is formed on the crown of the tooth X2 by a cutting tool (see FIG. 4 ). After that, the front end of the male thread portion 122 is screwed to the female thread portion 112, whereby the tooth extraction aid 1 in the state of screwing the first auxiliary base 11 and the second auxiliary base 12 is guided to the patient's oral cavity, and The first auxiliary base 11 is inserted into the recess X0 (FIG. 8/STEP21).

Next, the second auxiliary base 12 is relatively rotated with respect to the first auxiliary base 11 through the head 121 using an appropriate tool. Thereby, the male thread portion 122 advances toward the front end portion of the first auxiliary base 11 . At this time, the first auxiliary base 11 may be rotated inside the recess X0 of the tooth X2, and the helical protrusion 111 may be bitten or hooked on the tooth X2 to stop. Thereby, the front end of the second auxiliary base 12 breaks the capsule provided on the bottom of the first auxiliary base 11 to allow the adhesive M to flow out, and flow out to the concave portion X0 of the tooth X2 through the communication hole 114 . Next, the adhesive is cured to fix the first auxiliary base 11 to the tooth X2 (FIG. 8/STEP 22).

And, the operator who grasps the first base body 21 of the tooth extraction appliance 2, as shown in FIG. On the upper surface part, the engaging hole 222 of the second base body 22 is hooked to the head portion 121 of the second auxiliary base body 12 of the extraction aid 1 . Then, the tooth X2 is pulled out from the gum X1 together with the tooth extraction aid 1 by moving the tooth extraction tool 2 away from the gum X1 (see FIG. 8 / STEP23). [Industrial Utilization Possibility]

The tooth extraction aid 1 and the tooth extraction set of the present invention are safe, safe and less burdensome when extracting teeth for children and/or elderly patients. The tooth extraction auxiliary appliance 1 and the tooth extraction appliance set of the present invention can also be applied to tooth extraction of pets or livestock.

1: tooth extraction aids 2: tooth extraction appliance 11: The first auxiliary matrix 12: Second auxiliary matrix 21: The first substrate 22: The second substrate 110: slit 111: protrusion 112: female thread part 114: Connecting hole 121: head 122: Male thread part 210: hole 220: bottom 221: engaging notch 222: engaging hole X0: Concave X1: Gums X2: Teeth M: Adhesive

[ Fig. 1] Fig. 1 is an explanatory diagram of a structure of a tooth extraction assisting tool according to a first embodiment of the present invention. [FIG. 2] It is an explanatory drawing about the structure of the tooth extraction tool which is one embodiment of this invention. [FIG. 3] It is an explanatory drawing concerning the usage method of the tooth extraction assisting tool which is the 1st embodiment of this invention. [FIG. 4] It is an explanatory drawing about the usage method of the tooth extraction aid which is the 1st embodiment of this invention. [FIG. 5] It is an explanatory drawing concerning the usage method of the tooth extraction assisting tool which is the 1st embodiment of this invention. [ Fig. 6] Fig. 6 is an explanatory view showing the structure of a tooth extraction aid as a modified example of the first embodiment of the present invention. [ Fig. 7] Fig. 7 is an explanatory view showing the structure of a tooth extraction assisting tool according to a second embodiment of the present invention. [FIG. 8] It is an explanatory drawing about the usage method of the tooth extraction aid which is 2nd Embodiment of this invention.

1: tooth extraction aids

11: The first auxiliary matrix

12: Second auxiliary matrix

110: slit

X1: Gums

X2: Teeth

Claims (8)

An auxiliary tool for tooth extraction, comprising: The first auxiliary base is inserted into the recess formed in the tooth; and 2nd auxiliary matrix; A slit for dividing the front end portion and a through hole extending from the rear end portion to the front end portion are formed on the first auxiliary base body, and a female screw portion is formed on the inner surface of the first auxiliary base body, The second auxiliary base has a head, and a male thread portion extending from the head is formed on the second auxiliary base, The male screw portion of the second auxiliary base is screwed to the female screw portion of the first auxiliary base, the head is rotated to lock the second auxiliary base to the first auxiliary base, and the slit is expanded. , whereby the front end portion of the first auxiliary base divided by the slit is expanded. The tooth extraction aid as described in claim 1, wherein, In the first auxiliary base, the through hole is formed so as to reduce in diameter at least from the middle to the tip. The tooth extraction aid as described in claim 1, wherein, In the first auxiliary base, the female thread portion is formed such that the root diameter decreases from at least halfway to the front end. The tooth extraction aid as described in any one of Claims 1 to 3, wherein, A protrusion is formed on the outer surface of the first auxiliary base. An auxiliary tool for tooth extraction, comprising: The first auxiliary base is inserted into the recess formed in the tooth; and 2nd auxiliary matrix; A hole extending from the rear end and a communication hole connecting the hole to the external space are formed in the first auxiliary base, a female thread portion is formed on the inner surface of the first auxiliary base, and a filling hole is provided in the hole. capsules with adhesive, The second auxiliary base has a head, and a male thread portion extending from the head is formed on the second auxiliary base, The male thread portion of the second auxiliary base is screwed to the female thread portion of the first auxiliary base, the head is rotated to lock the second auxiliary base to the first auxiliary base, and the capsule is broken, Thereby, the adhesive agent flows out to the outside of the first auxiliary base through the communication hole. A tooth extraction appliance set is composed of the following: The dental extraction aid described in claim 1 or 5; and The tooth extraction tool is formed with an engaging portion that is guided to the gap between the second auxiliary base and the tooth when the first auxiliary base is inserted into the concave portion formed on the tooth, and engages. On the aforementioned head of the aforementioned second auxiliary base. The tooth extraction tool set as described in claim 6, wherein, The aforementioned tooth extraction appliance comprises: a first base extending in the longitudinal direction; and a second base connected to one end of the first base in the longitudinal direction and inserted into the patient's oral cavity, Among the engaging holes constituted by the first hole and the second hole, at least one of them is formed in the aforementioned second base as the aforementioned engaging portion; The engagement notch and the second base allow the passage of the second auxiliary base; the second hole is configured so that the second auxiliary base cannot pass through and is continuous with the first hole. The tooth extraction tool set as described in claim 7, wherein, The second base of the tooth extraction tool is formed in a convex shape, and the bottom of the second base is formed in a flat shape, or formed in a convex shape with a smaller curvature than the periphery of the second base.

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