JP3968592B2 - Kit of components for alveolar bone or jawbone extension - Google Patents

Description

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

When the alveolar bone or jawbone (6) resorption (retraction / atrophy) occurs with aging, and when the artificial tooth root (not shown) is placed, the alveolar bone or jawbone is thin or the tooth is depressed and difficult to place There is a need, however, for an alveolar or jawbone extension that extends bone and thickens or heightens the bone.
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 (Non-Patent Document 1) with an implant technique using a screw-type planting method conceived for planting an implant in a bone, but this is not possible at the time of the above-mentioned correspondence.

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 implanting an artificial tooth root, there are not a few patients who have a thin alveolar bone or jawbone (6) as a base and no space for implantation. 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, the alveolar bone or the jawbone (6) is depressed or contracted by the corresponding bone resorption shown in FIG. 5 and cut with a treatment cutter or osteotomy saw not shown in FIG. Perform (7D). The screw (1) is set in the hole drilled in the alveolar bone or the jawbone (6) with a drill (hole saw) as shown in FIG.
The tip of the screw has a flat surface to prevent indentation, and the end has four notch grooves (1B) to prevent the screw from falling over.
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 approximately the same diameter as the effective diameter of the screw, and then screwed in the screw (1).

After setting the screw on the mandibular alveolar bone or mandible (A), the mandibular alveolar bone or mandible (B) is inserted into the screw. Thereafter, the screw / slip nut (10A) is screwed into the screw. Then, plate A (3A) with a fixing plate / slip nut is bent and applied to the end of the alveolar bone or jawbone, and then screw (5) is guided through the hole (3C) of plate A (3A). And screwed into the alveolar bone or jawbone .

Notch part (7) of alveolar bone or jaw bone (6B) by pressing with screwdriver (not shown) into screw groove (1A) of screw (1) and turning slip nut A (2A) with a dedicated spanner (with pin) The gap (ΔH1) can be gradually changed with a screw to the bone formation dimension (ΔH) of the screw.
In the example, it is set to change by 0.1 mm every time the nut (2) is turned 90 degrees so that it can be easily managed in accordance with the amount of bone extension per day.
That is, the alveolar bone or the jawbone (6B) moves upward (ΔH1) in FIG. 1 to form a gap in the notch (7). On the other hand, the connector (15) is screwed into the screw (1), and then a stainless steel hard wire wire (14) having a rectangular cross section is passed through the rectangular hole (15C) in the ear (15B) portion of the connector. In order to eliminate the wobbling (falling down) of the screw (1) to be used, the wire is pulled from both sides with brackets (13) fixed to the lower teeth (8) on both sides in the vicinity of the treated tooth in the case.

The present invention extends the alveolar bone or jaw bone (6) in a free direction such as vertical, horizontal, diagonal, etc. when resorption (retraction / atrophy) occurs in the alveolar bone or jaw bone and it is difficult to place an artificial tooth root. achieving the formation of new alveolar bone or new jaw bone, the formation at the same time, the wire, by performing correction of alveolar bone or jawbone through the use of such screws, a stable and rapid formation of the incoming base implantation of the artificial tooth root.
By combining the extension tool shown in FIG. 3 with the connector (15) shown in FIG. 4, the following various effects are further exhibited.

B) Since the structure of the tooth extension tool is simple, there is little uncomfortable feeling during wearing and removal 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) Easy to treat with few peeling surfaces of epithelium (mucosa 9) when attaching / removing the extension tool.
D) Since the epithelial (mucosal) detachment surface is small, blood supply to the bone tissue is not deficient.
E) When mounting or dismounting, it can be handled only by rotating the knurled nut (2).
F) The pitch of the screw (M2 × 0.4) is set according to 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.
(G) By using the connecting tool (15) and the rectangular cross-section wire (14) together with the extension tool, it becomes possible to correct (*) the alveolar bone or the jawbone simultaneously with the bone formation.
In other words, as shown in FIG. 9, the alveolar bone or jaw bone can be corrected (* about 2 to 5 mm) by combining the unique bending part (14A) of the wire with a rectangular cross section and the rectangular hole (15C) of the connector. It becomes.

In addition, the conventional method of attaching only a small screw (for example, M2) to an inferior alveolar or jaw aggregate that is not strong enough causes glitches and may cause discomfort and infection. It eliminates them and is highly reliable.
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 to increase thickness or bone perform distraction if the implantation is difficult shallow. 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 (6), 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, and there may be 3-4 or more of locking screws (5). Accordingly, the plate A is lengthened.

When implanting an artificial dental root to a therapist, extend the bone when the alveolar bone or jaw bone is shallow and difficult to insert, then implant a shape with a screw type selected as an implant, and then connect an abutment not shown Then, 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 with a component with a fixing plate / slip nut (10A) and screw (1). ) Is provided with a cut (7D), so that it is easy to extend the bone.

  In addition, as a material of a product used in the present invention, it is preferable to use a plastically deformable material such as a titanium alloy, stainless steel, cobalt chrome alloy or the like that has no interest in a living body.

Hereinafter, the use of the alveolar bone or jawbone extension tool of the present invention in the dental treatment process will be described in order based on the drawings.
FIG. 1 is a schematic diagram of a mandibular anterior tooth at the start of treatment in the use of an alveolar bone or jawbone extension device of the present invention. This is referred to as Usage Example 1 for convenience.
FIG. 2 shows an end view (schematic diagram) of the CC cutting section of FIG.
3 to 4 show the main components of the alveolar bone or jawbone extension.
5 to 6 show a part of the front teeth before treatment and at the start of treatment.
7 to 8 show treatment ( use ) example 2 and ( use ) example 3 of the lower tooth as an example.

A fixed plate / slip nut (10A) used for these treatments is composed of a nut (2) and a fixed plate (3) with a cylinder as shown in FIG. 3 (d).
A screw (1) that is screwed into the nut A (2A) is fitted inside the slip nut (10). Four notch grooves (1B) are provided on the outer periphery of 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) on the inside, and has four holes (2E) on the circumference for turning the nut.
The inner diameter (2D) rotates (slidably fits) with the outer diameter (3D) of the plate A (3A).
The fixed plate / slip nut (10A) with a cylinder in FIG. 3 (d) inserts the outer diameter (3D) of the fixed plate with cylinder (3) into the inner diameter (2D) of the nut (2), and then the nut A ( 2A) K part of the outer end is formed into a shape as shown in the figure by “sparing”. At this time, the nut A (2A) and the plate A (3A) of the fixed plate with the cylinder are formed with a gap fitting with a diameter that can be rotated lightly and with a backlash (0.1 mm gap) in the axial direction. Has been.

At the time of treatment, the plate A (3A) of the 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 depending on the situation as shown in FIG. In order to make it easier, a thin hole (3E) is provided in the plate A (3A). on the other hand,

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

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 to easily form the spatula processed portion (K) of the nut A (2A).

The 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 being embedded in the alveolar bone or the jawbone (6). It is provided so that it will not be detached immediately after the passage of time.
The reason why the “knitted or flat” knurled (2G) is provided on the outer diameter portion of the nut is that manual operation and operation at the time of attachment / detachment of the present invention can be performed in a short time.

The processing of the plate A (3A) of the cylinder fixing plate (3) is made into 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.

Since plate A (3A) uses a superplastic material of titanium alloy as described above, it is easily attached to the alveolar bone or jaw bone (6) as shown in FIG. The plate A (3A) is fixed with screws (5) on both sides of the alveolar bone or the jawbone.
Since the plate A (3A) is attached to the alveolar bone or the jawbone (6), the plate A (3A) is not required to be excessively strong and is easily bent at a place where workability is difficult. A dullness (3E) is provided at the base of 3A).

On the other hand, when the screw (1) used for the alveolar bone or jawbone extension device is placed on the alveolar bone or jawbone (6A), the connector (15) fitted to the screw to maintain the uprightness of the screw. Is used.
As shown in FIG. 4, the connector is provided with a screw (15A) that fits into the screw (1) on the inside, and has a rectangular hole (15C) in the outer ear (15B) portion.
The rectangular hole is used through a wire (14) of a stainless steel wire having a rectangular or square cross section.

Bracket A (13A) fixed to the lower teeth on both sides with adhesive or the like after setting the connector at the optimum position as shown in FIG. 1 and passing the wire (14) through the hole (15C) of the connector. The end of the wire is tied to the bracket B (13B), and the wire (14) is pulled from both sides with an optimum force, and the screw (1) is fixedly held.
With the progress of the treatment date and time, the screw (1) is turned around with a screwdriver (not shown), and the nut (2) is loosened (turned counterclockwise) to remove the alveolar bone or jawbone (6B). Move upward to increase the gap in the horizontal zone (ΔH1).

Each time, the wire is used by changing the large size of the rectangular cross section according to the purpose when the strength needs to be increased. 4 and 9 show the connector (15) of the first usage example.

The wire used in Fig. 9 is straight before passing through the connector, and after passing through the connector, the bent part of the wire is slack (margin) as shown in the figure to make the direction necessary for correction. (14A) is for correcting the fall of the screw (1) in the necessary direction by performing handwork on both sides of the treatment tooth.
When holding this wire with a slack (margin), use a wire with a rectangular section with increased strength.

The wire (14) corrects simultaneously with the bone formation of the alveolar bone or the jawbone from the combination with the rectangular hole (15C) provided in the ear (15) portion of the connector (15) screwed into the screw (1). I can do it.
In addition, it takes about 3 months to correct the alveolar bone or the jaw bone from the initial formation of the new bone (i.e., immature state) and to reach a bone that is somewhat mature. In this manner, the orientation and position of the alveolar bone or jaw bone are corrected and adjusted (plastic) by gradually repeating until a predetermined size / shape is reached in several months to half a year.
For bone extension, 360 degree rotation per day is adjusted twice (0.8 mm / day) as a guide.

FIG. 10 shows a connector (16) of the second embodiment. A plate (16D) is fixed to the outside of the cylindrical shape (16B), and a hollow pipe (16C) or a wire engagement piece (16E) is coupled to the plate. In addition, the cross-sectional shape of the wire (14) used in this case does not need to be limited to a rectangle, and uses the same way as FIG. Stainless steel or the like is used as the material of the connector.
Next, an example using the kit of the component of the alveolar bone or jawbone extension device of the present invention will be shown.
Figure 1 shows an example 1 using Example typical alveolar bone or jaw bone extension tool components of the kit of the present invention.
FIG. 7 shows an example 2 of how to use the extension tool , and FIG. 8 shows an example 3 of using a kit of components of the extension tool .
Note that FIG. 9 shows a specific bending method (how to use) of a large wire (14) having a large rectangular cross section to be inserted into a rectangular hole (15C) of a connecting tool screwed to a screw (1) of an extension tool. The example of correcting the orientation of the alveolar bone or the jawbone (while forming the bone) by applying a lateral force to the screw shaft was shown.

First, before explaining the usage example of the extension component kit, the names and locations of the relevant parts are defined and explained.
FIG. 5 shows an overview of the location of the anterior teeth before using the extension kit component kit for the treatment area concerned.
FIG. 6 shows an example at the start of use of a kit of extension tool components in the lower jaw to be treated. The use of the present invention will be described with the BB cross section of FIG. 6 as a representative example of FIG.
FIG. 7 shows an example 2 in which the kit for the extension tool component in the lower jaw is used and the screw (1) is used in the horizontal direction.
FIG. 8 shows a usage example 3 when the kit of the component of the extension tool is used and the screw (1) is used from the oblique direction.

When implanting an artificial dental root to a therapist, the alveolar bone or jawbone is depressed and thin or shallow, and it is difficult to place the bone. For this purpose, the alveolar bone or jawbone (6) is treated as a therapeutic cutter. Cut (7D), etc., and perform bone formation at the raised portion (ΔH1), and then implant and plant an artificial tooth root.
FIG. 6 shows an example in which the cutting part (7) is in the horizontal zone (7A).
FIG. 7 shows an example of a vertical zone. FIG. 8 shows a case where bone extension is performed obliquely.

When implanting an artificial dental root to a therapist, when the alveolar bone or jawbone is depressed and thin, it is difficult to insert, and after that, implant the screw type selected shape with the implant, and then place the abutment not shown Joint and place artificial teeth on 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). By providing a cutting part (7), it is possible to cope with bone extension.

At this time, during the treatment period using the kit of components of the extension device, the connection tool (15) is fitted to the end of the screw to stabilize the position of the screw (1) used for the extension device and wobbling. And, at a predetermined position, the wire (14) of a hard wire material such as stainless steel having a rectangular cross section is engaged with the rectangular hole (15C) of the ear (15B) portion of the coupler, and the wire is unique on both sides of the ear of the coupler. By crafting the wire bending part (14A), a traction force (unbalanced force) is generated on both sides of the wire. This action force acts on the screw (1) axis by simultaneously new bone formation (extension of alveolar bone or jaw bone), it can be corrected alveolar bone or jaw bone orientation (specific bending of the wire in FIG. 9 Part (14A)).

  Note that both ends of the wire are fixed by being attached or wound around brackets A (13A) and B (13B) fixed to the teeth on both sides of the treatment tooth. (Figure 9 illustrates this)

  Plate A (3A) is formed by precision casting with titanium, titanium alloy or the like, so the hole (3C), fool hole (long hole) (3E), and protruding part of plate A (3A) of the outer diameter or locking part Since each corner such as (3G) becomes “R corner” at the time of manufacture, it interferes softly on 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, pesticides that harm the human body, artificially modified colors, flavored processed foods, etc. are no longer necessary.

  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.

Use Example 1 of Component (Kit) of Alveolar Bone or Jaw Bone Extender of the Present Invention (Arrow View YY Section in FIG. 5B / Front View of Mandibular Teeth) Use Example 1 of Component (Kit) of Alveolar Bone or Jaw Bone Extender of the Present Invention ( End View of Sectional Sections in FIGS. 1C-C) Main components of the alveolar bone or jawbone extension device used in FIG. 2 of the present invention (a) Plane (upper) view / view A of FIG. 3 (c) (b) Bottom view / FIG. 3 (c) View B (c) Cross section AA / in FIG. 3A (d) With fixing plate / slip nut (10A) (e) Nut (2) (f) Fixing plate with cylinder (3) (A) Horizontal (horizontal) sectional view (b) Vertical (vertical) sectional view of the connector (15) of the present invention (first embodiment) Appearance of the anterior teeth of the lower jaw / local view before using the kit of the component of the extension tool (a) Front view of the appearance of the anterior teeth (b) View XX in FIG. 5 (a) (viewed from above) Appearance / local view of mandibular anterior teeth of YY in FIG. 5B Use example 2 of the kit of the component of the extension tool of the present invention in section BB in FIG. Use example 3 of the kit of the component of the extension tool of the present invention in section BB in FIG. How to use the unique wire (14) of Use Example 1 of the present invention (→ Example of a wire bending portion (14A) for correcting alveolar bone or jaw bone) The perspective view of (2nd Example) of the connector (16) of this invention (a) Top view (b) Partial cutaway side view / side view

Explanation of symbols

10A With fixed plate / Slip nut 1 Screw 1A Driver groove 1B Notch groove 1C Spanner mounting part 2 Nut 2A Nut A 2C Female thread 2D Inner diameter 2E Driver pin hole
2F outer diameter 2G knurled 3 fixed plate with cylinder 3A plate A 3C hole 3D outer diameter 3E fool hole 3F inner diameter
3G Convex part or trumpet shape 3H Sliding inner diameter 3J Tube 5 Screw

6 Alveolar bone or Jawbone 6A Mandibular alveolar bone or mandible (I) 6B Mandibular alveolar bone or mandible (B)
7 Cutting part or notch part 7A Horizontal zone 7B Vertical zone 7C Gap zone 7D Cutting surface or notch 7E Cutting surface 8 Lower tooth 8A Lower tooth (I) 8B Lower tooth (b) 8U Upper tooth 9 Epithelium (mucosa)
(11) Artificial tooth root (12) Implant 13 Bracket 13A Bracket A 13B Bracket B
14 Wire 14A Wire bending portion 15 (first embodiment) connector 15A screw 15B ear 15C rectangular hole 16 (second embodiment) connector 16A screw 16B cylindrical (16C hollow pipe)
16D plate 16E wire engagement piece

C Conical surface H Pre-treatment / Mandibular dimensions △ H Bone formation (zone) dimensions △ H1 Horizontal zone △ H2 Vertical zone △ H3 Inclined tooth zone K Spatula processing part or bending processing part

Claims (2)

If alveolar bone or jaw bone (6) resorption (retraction, atrophy) occurs and it is difficult to place an artificial tooth root, increase the amount of bone and extend the alveolar bone or jaw bone to thicken the alveolar bone or jaw bone or In order to make it high, the alveolar bone or jaw bone of the treatment planned portion is cut (7D) with a treatment cutter or the like and divided, and the components of the extension used for the corresponding cutting portion are fixed plate / slip nut, bracket, A kit consisting of a wire and a connector,
B) With a fixed plate / slip nut (10A), the combination of the nut (2) and the fixed plate with cylinder (3) is integrated so that both the nut and the fixed plate with tube can rotate freely.
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 (10A) can be formed into a shape adapted to the shape of the end face of the alveolar bone or the jawbone (6).
D) bis (5) is a threaded Dressings in holes (alveolar bone or jawbone through 3C) (6) of the plate A (3A).
E) Fix the bracket (13) for attaching the wire (14) to the tooth near the treatment tooth,
F) Screw the screw of the connector (15) that attaches the wire to the screw (1) used for bone formation,
G) A wire (14) having a quadrilateral cross section is engaged with a rectangular hole (15C) in a protruding ear (15B) portion provided in the connector.
A kit of components of an alveolar bone or jawbone extension tool, which corresponds to the above configuration. If alveolar bone or jaw bone (6) resorption (retraction, atrophy) occurs and it is difficult to place an artificial tooth root, increase the amount of bone and extend the alveolar bone or jaw bone to thicken the alveolar bone or jaw bone or In order to make it high, the alveolar bone or jaw bone of the treatment planned portion is cut (7D) with a treatment cutter or the like and divided, and the components of the extension used for the corresponding cutting portion are fixed plate / slip nut, bracket, A kit consisting of a wire and a connector,
B) With a fixed plate / slip nut (10A), the combination of the nut (2) and the fixed plate with cylinder (3) is integrated so that both the nut and the fixed plate with tube can rotate freely.
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 jawbone (6A), and the other alveolar bone or jawbone (6B) has a screw (1 ) Penetrates.
C) The plate A (3A) of the fixed plate / slip nut (10A) can be formed into a shape adapted to the shape of the end face of the alveolar bone or the jawbone (6).
D) The screw (5) is screwed into the alveolar bone or the jawbone (6) through the hole (3C) of the plate A (3A).
E) Fix the bracket (13) for attaching the wire (14) to the tooth near the treatment tooth,
F) Screw the screw of the connector (16) for attaching the wire to the screw (1) used for bone formation,
G) Engage the wire (14) with the wire engagement piece (16E) provided on the connector.
A kit of components of an alveolar bone or jawbone extension tool, which corresponds to the above configuration.

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