JP3940846B2 - Alveolar bone or jaw bone extender - Google Patents

Description

The present invention relates to an extension tool for alveolar bone or jawbone (6).

Absorption of alveolar bone or jaw bone with age (regression, atrophy) is generated, in case the implantation of defunct dental implant illustrated difficulty embedding thinned or recessed is alveolar bone or jawbone, the extension of the alveolar bone or jawbone There is a need for an extension tool that performs and thickens or heightens the alveolar bone or jawbone .
When this part is missing, the healthy body is not maintained due to poor food engagement, and the food is not delicious.

  For simple cavities and the like, there is a response (see Non-Patent Document 1) using an implant technique that uses a screw-type planting method conceived for planting an implant in a bone, but this is not possible.

As an improvement measure, there is an extension method of the alveolar bone or jaw bone (6), and the mechanism is an alveolar bone or jaw bone extension tool in which a screw is screwed into the cylinder of the plate (see, for example, Patent Document 1). .
In addition, commercially available pamphlets include a combination of a plate and a screw having a different system (see, for example, Patent Document / Patent Document US Pat. No. 5,769,850).

Maruhashi Ken et al. “Reliable with Implant” Incorporated Association / Agricultural and Fisheries Cultural Association March 2001 First Print Issue-Page 145 JP 2003-135478 A

When embedding an artificial tooth root, there are many treatment persons who have a shallow alveolar bone or jawbone and have no space for embedding. Such a therapist had to give up because it was impossible to install a conventional artificial tooth root.

  An object of the present invention is to use a characteristic that new bones are formed between bones when bones (cutting surfaces of bones) are gradually separated from a close contact state every day.

For this reason, cutting (7D) is carried out with a therapeutic cutter or osteotomy saw where the corresponding alveolar bone or jawbone shown in FIG. 11 is depressed and thinned. The screw (1) is set in the hole drilled in the alveolar bone or the jawbone with a drill (hole saw) as shown in FIG.
The tip of the screw is a flat surface to prevent indentation, and the end is formed with four notch grooves (1B) to prevent the screw from falling.
The drill hole in the mandibular alveolar bone or mandible bone (6B) is 0.6 mm larger than the outer diameter of the screw (gap 0.3 mm), and the drill hole in the mandibular alveolar bone or mandible b (6A) is , Processed with the same size as the effective diameter of the screw, and then screwed in the screw (1).

After that, the screw / slip nut (10) is screwed into the screw. Then, the plate A (3A) with a fixing plate / slip nut is formed by bending and fitting it to the end of the alveolar bone or jawbone, and then the screw (5) is inserted into the alveolar bone or jawbone in the hole of the plate A (3A) ( 3C) is fixed by screwing with a guide.

Notch part (7) of alveolar bone or jawbone (6B) by holding onto screwdriver groove (1A) of screw (1) with a screwdriver (not shown) and turning slip nut A (2A) with a dedicated spanner (with pin) It is possible to gradually change the gap ΔH1 with a screw to the bone formation dimension (ΔH).
In the example, the setting is made so that a change of 0.1 mm is made every time the nut (2) is turned 90 degrees so that the adjustment of the bone length of the day can be easily managed.
That is, the alveolar bone or the jawbone (6B) moves upward (ΔH1) in FIG. 1 to form a gap in the notch (7).

The present invention aims to increase bone mass when alveolar bone or jaw bone resorption (retraction / atrophy) occurs and it is difficult to implant an artificial dental root, and the alveolar bone or jaw bone is extended to make the alveolar bone or jaw bone higher or thicker. The following specific effects occur.

B) The structure of the alveolar bone or jawbone extension device is simple, so there is little uncomfortable feeling when attaching and detaching during treatment.
B) There is a degree of freedom in the direction (direction) of the portion (place) that thickens the alveolar bone or jawbone .
C) There are few peeling surfaces of the epithelium (mucosa, 9) when attaching / removing the extension device, and treatment is easy.
D) Since the epithelial (mucosal) detachment surface is small, blood supply to the bone tissue is not deficient.
E) When mounting or removing, only the nut (2) can be rotated (knurled).
F) The pitch of the screw (M2 × 0.4) is set in accordance with the amount of bone extension per day. That is, in the actual example, since the 90-degree rotation advances 0.1 mm, it is easy to manage the extension amount visually.

Note that the conventional method of attaching only a small screw (for example, M2) to an alveolar bone or jaw bone that has no strength causes glare immediately and there is a risk of discomfort and infection. High reliability is eliminated.
In addition, planting and removal can also be treated left, right, up, down, and diagonally by turning the screw (5) screwed into the alveolar bone or jawbone (6), the slip nut (10A) of the present invention, and the screw (1). The degree of freedom of handling is great regardless of the orientation.

When embedding unillustrated artificial tooth root alveolar bone or jawbone, it is possible to alveolar bone or jaw bone when embedding is difficult or increasing the bone performs extension of alveolar bone or jawbone in superficial, or thicker. The plate A (3A) is made of pure titanium, titanium alloy (JIS standard 60 types) superplastic material, etc., which is thin and highly biocompatible.
Therefore, when the plate A (3A) is attached to the alveolar bone or the jawbone, the adaptability to the living body can be easily obtained.

In addition, this invention is not limited to the above-mentioned Example, It can respond similarly to a maxillary alveolar bone or a maxilla. Moreover, even if there are 3-4 or more locking screws (5). Good. Accordingly, the plate A is lengthened.

And absorption of alveolar bone or jaw bone to the therapist (regression-atrophy) occurs, when implantation of artificial tooth root is difficult to alveolar bone or jaw bone, carried out an extension of the alveolar bone or jaw bone, was selected screw type in the subsequent implant A shaped article is implanted, then an abutment (not shown) is joined, and artificial teeth are attached to the abutment.
Accordingly, alveolar bone or jaw bone extension tool of the present invention for the support, fixed fitted with the slip nut (10A) and screw (1) alveolar bone or jaw bone as shown in FIG. 1 by the components of the (6) By providing a cut (7D), it is easy to perform bone extension.

  The material used in the present invention is preferably a plastically deformable material such as a titanium alloy, a stainless alloy, a cobalt chrome alloy, or the like that has no interest in living organisms.

Hereinafter, Embodiment 1 of the present invention will be mainly described with reference to the drawings. FIG. 1 is a (style) cross-sectional view of an alveolar bone or jawbone extension device according to the first embodiment of the treatment of the present invention. According to the treatment contents, the second embodiment of the treatment of the present invention (FIG. 12) and the present invention. A third embodiment of the treatment (FIG. 13) and a fourth embodiment of the treatment of the present invention (FIG. 14) are shown. This will be described in the order of examples.

As shown in FIG. 2, the fixed plate / slip nut (10A) used for these treatments is composed of three parts: a nut (2), a cylindrical fixed plate (3), and a screw (1). Has been.
A screw (1) screwed into the nut A (2A) is fitted in the center of the slip nut (10). Four notch grooves (1B) are provided at the tip of the screw. The other end is provided with a driver groove (1A) for rotating the screw (1).

The nut A (2A) has a female screw (2C) at the core and a hole (2E) for rotating the nut at the end. The inner diameter (2D) is adapted to fit with the outer diameter (3D) of the plate A (3A).
The cylinder fixing plate / slip nut (10A) of FIG. 5 has an outer diameter (3D) inserted into the inner diameter (2D) of the nut (2A) inside the cylinder fixing plate (3A), and then the outer end of the nut. The K part is formed into the shape shown in the figure by “sparing”. At this time, the nut A and the plate A of the fixed plate with a cylinder are formed with a backlash (about 0.1 mm gap) in the axial direction so that the nut A and the plate A are rotated lightly.

At the time of treatment, the plate A (3A), which is a fixed plate with a cylinder, is attached to the alveolar bone or the jawbone (6), and the plate A (3A) is bent in an appropriate shape according to the situation as shown in FIG. In order to make this easier, a thin hole (3E) is provided in the plate A (3A).

In order to adjust the new bone on the cut surface (7D) of the alveolar bone or jaw bone (6), a screw having a size of about M2 × 0.4 mm is used. The screw (5) is about M1.4 × 0.3 mm. Four notch grooves (1B) are provided at the end of the screw (1), and a driver groove (1A) is provided at the other end.

  The thickness (T) of the plate A (3A) of the fixed plate (3) with the cylinder is about 0.8 mm, and the gap between the inner diameter (3F) of the cylinder portion and the screw diameter is set to 0.2 mm. The outer diameter of the portion is 4.4 mm and there is a gap of 0.05 mm from the nut inner diameter (2D). Moreover, the reason why the outer portion C of the plate A (3A) has a conical surface is that the spatula processed portion (K) of the nut A (2A) is easily formed.

The wall thickness (T) of the cylindrical portion of the fixing plate (3) is about 0.8 mm, and the protruding portion (3G) is provided at the end portion after the time of being embedded in the alveolar bone or the jawbone (6). It is provided so that it will not be detached immediately after elapse of time.
The processing of the plate A of the cylinder fixing plate (3) has a shape that can be easily manufactured by precision casting.
This product is made of titanium or titanium alloy in a soft state for superplasticization.
The number of driver pin holes (2E) is not limited to four on the circumference, but may be three to six. For the screws (1) and screws (5), titanium-baradium alloy (JIS standard 12 types) or the like is used.

Next, a second embodiment of the present invention shown in FIG. 6 will be described.
It is a front view of the slip nut (10B) with a fixing plate of 2nd Example. The difference from the first embodiment is that the screw (1) has a quadrangular spanner mounting portion (1C) when the screw is rotated.

  The slip nut (10B) is different in the configuration of the shape of the nut B (2B) and the plate B (3B), but the functional effect is not changed. The plate B (3B) is fitted to the outer periphery of the outer diameter (3D) of the cylindrical portion integral with the nut B. JIS standard (E type) retaining ring (4) is used to prevent the plate B from being removed in the axial direction, and it is fixed to the outer circumferential groove (2F) of the cylindrical part of nut B (2B) (E type). Use with a ring. The “diamond or flat” knurling (2G) is provided on the outer diameter portion of the nut for the purpose of improving and facilitating the manual operation at the time of attachment / detachment of the present invention. Is.

Depending on the axial backlash (play) of the plate B (3B) (E type) 0.05 mm to 0.1 mm thickness of outer diameter x inner diameter (φD × φd) of adjustment shim not shown inside the retaining ring Select and adjust.
The (E type) retaining ring (equivalent to JIS B 2805) is a stainless steel plate with a thickness of 0.6 mm. The materials used for the nut B (2B) and plate B (3B) are the same as in the first embodiment. Titanium alloy is used.

Since the plate B (3B) uses a superplastic material made of titanium alloy as described above, it can be easily attached to the alveolar bone or jaw bone (6) as shown in FIG. Then, the plate B (3B) is fixed with screws (5) on both sides of the alveolar bone or jawbone.
In addition, when attaching plate B (3B) to the alveolar bone or jawbone (6), it is not necessary to have excessive strength, so that it is easy to bend in places where workability is difficult, so that the base of plate B (3B) is thinned. (See FIG. 4).

Next, treatment examples using the alveolar bone or jawbone extension device of the present invention will be described with reference to FIGS. First, before explaining treatment examples, define and explain the names and locations of each part.

  9 to 11 show an overview of the tooth location before treatment. The treatment example was explained with reference to the CC cross section of FIG. 11 as a representative example in FIG. That is,

When implanting an artificial dental root in a therapist, the alveolar bone or jaw bone is absorbed (retracted / atrophy), and when the artificial dental root is difficult to be implanted, bone extension is performed. For this purpose, the alveolar bone or the jaw bone (6) is treated as a therapeutic cutter. A new bone is formed at the raised portion (ΔH1) by cutting (7D) or the like, and an artificial tooth root is implanted or planted in a place where a sufficient alveolar bone or jawbone is formed. The figure shows an example in which the cutting part (7) is in the horizontal zone (7A).

FIG. 12 shows an example of a vertical zone. FIG. 13 is a variation of FIG. FIG. 14 shows a case in which a new bone is formed obliquely to create an artificial tooth root.
12 to 14 have different purposes, but the present invention can be applied to any type.

When implanting an artificial dental root in a therapist, the alveolar bone or jawbone is absorbed (retracted / atrophy), and when the artificial dental root is difficult to be implanted, bone extension is performed. An abutment (not shown) is jointed, and artificial teeth are attached to the abutment.
Therefore, the alveolar bone or jawbone extension tool of the present invention for the above-mentioned correspondence is an alveolar bone or jawbone (6) as shown in FIG. 1 in the component parts of the slip nut (10A) with fixing plate and the screw (1). Corresponding by extending the bone by providing a cutting part (7).

  Plate B (3B) is formed by precision casting with titanium, titanium alloy, etc., so the hole (3C), fool hole (long hole) (3E), and protrusion of plate A (3A) of the outer diameter or locking part Since each corner part such as the part (3G) is manufactured at the “R corner” at the time of manufacture, it softly interferes with the skin of the patient or the operator.

  If the dentition and alignment are poor, the appetite is reduced and the chewing ability is reduced. When your teeth become healthy, your meal will naturally become delicious and your interest in food and meals will increase. In addition, the excellent aesthetic appearance can maintain and enhance overall life. On the other hand, there is no need for pesticides that harm the human body, artificially modified colors, and processed foods with added flavor.

  By reducing the burden of dental treatment, it is possible for all citizens to maintain health, reduce treatment costs, shorten patient treatment time, etc. It will also be possible to invest in other industries.

Schematic (1) of the alveolar bone or jawbone extension tool of the first embodiment of the treatment of the present invention (part of use example in section CC of FIG. 11) With fixing plate / slip nut (10A) used in the first embodiment of the present invention (cross section AA in FIG. 3) Plan view of the first embodiment (A side in FIG. 2) Bottom view of the first embodiment (B side in FIG. 2) 2 with a fixing plate / slip nut (10A) (A) Fixing plate with cylinder / plate A (3A) (B) Nut A (2A) With fixing plate / slip nut (10B) used in the second embodiment of the present invention Plan view of the second embodiment (C side in FIG. 6) / (left side view) Bottom view of the second embodiment (D side in FIG. 6) / (right side view) Appearance of anterior teeth before treatment / local view (front view) XX arrow view (plan view) in FIG. YY arrow view in FIG. 10 (appearance of front teeth during treatment / local view) Model (2) of the alveolar bone or jawbone extension device of the second embodiment of the treatment of the present invention Model (3) of the alveolar bone or jawbone extension device of the third embodiment (for special treatment) Model (4) of alveolar bone or jawbone extension device of the fourth embodiment of the treatment of the present invention

Explanation of symbols

10 With fixing plate / Slip nut
10A with fixed plate / slip nut A
10B with fixed plate / Slip nut B
1 Screw 1A Driver groove 1B Notch groove 1C Spanner mounting part 2 Nut 2A Nut A 2B Nut B 2C Female thread 2D Inner diameter 2E Driver pin hole 2F Outer diameter 2G Knurl 3 Fixing plate with cylinder 3A Plate A 3B Plate B 3C Hole 3D Outer diameter 3E Stupid hole 3F Inner diameter
3G Projection or trumpet shape 3H Sliding inner diameter 4 (E type) Retaining ring 5 Screw

6 Alveolar bone or Jaw bone 6A Mandibular alveolar bone or mandible B 6B Mandibular alveolar bone or mandible B 7 Cutting part or notch 7A Horizontal zone 7B Vertical zone 7C Gap zone 7D Cut surface or notch 8 Lower tooth 8A Lower tooth i 8B Lower tooth B 8U Upper teeth 9 Epithelium (mucosa)
(11) Artificial tooth root (12) Implant

H Before treatment / Mandibular dimensions △ H Bone formation (zone) dimensions △ H1 Horizontal zone △ H2 Vertical zone △ H3 Oblique zone Δφ Bone formation oblique zone K Spatula or bending part C Conical surface

Claims (6)

When the alveolar bone or jaw bone (6) is resorbed (retracted, atrophy) and it is difficult to implant an artificial dental root, the alveolar bone or In the extension tool used to cut (7D) and divide the jawbone with a therapeutic cutter etc.
B) With a fixed plate / slip nut (10), the nut and the fixed plate with a cylinder can be freely rotated by integrating the combination of the nut (2) and the fixed plate with a tube (3).
B) The nut (2) and the screw (1) are screwed together, but the end face of the screw serves as a receiving portion for dividing the alveolar bone or the jawbone (6A), and the other alveolar bone or the jawbone (6B) has a screw (1 ) Penetrates.
C) The plate A (3A) of the fixed plate / slip nut (10) can be formed into a shape adapted to the shape of the end face of the alveolar bone or the jawbone.
D) The screw (5) is passed through the hole (3C) of the plate A (3A) and screwed into the alveolar bone or the jawbone.
An alveolar bone or jawbone extension device comprising the above components. With the fixed plate / slip nut (10A), the outer K portion is inserted after the outer diameter (3D) forming the conical surface (C) of the fixed plate with cylinder (3) is inserted into the inner diameter (2D) of the nut A (2A). 2. The alveolar bone or jawbone extension tool according to claim 1, wherein the alveolar bone or jawbone extension tool is formed by spatula processing. The fixed nut / slip nut (10B) has a structure in which the retaining ring (4) is fitted after the sliding inner diameter (3H) of the fixed plate with cylinder (3) is fitted to the outer diameter (2F) of the nut B (2B). The alveolar bone or jawbone extension device according to claim 1. Screw (1) extension tool of the alveolar bone or jaw bone according to claim 1, characterized in that a notched groove (1B) on the end of. Cylinder with fixed plate (3) on the protrusion portion alveolar bone or jaw bone extension tool of claim 1, characterized in that a (3G). The alveolar bone or jawbone extension tool according to claim 1, wherein a knurling (2G) is installed on the outer diameter of the nut.

Images