JPH08257040A - One time method intraosseous implant - Google Patents

Abstract

PURPOSE: To provide a one time method implant by which an implant treatment becomes possible by using an operating appliance and an upper structure body for a two time method implant. CONSTITUTION: In a one time method intraosseous implant having at least a gum penetrating part P and an enthetic part V to be inserted into a bone, a shape of the enthetic part V is set so as to be insertable into both of an enthetic fossa for a one time method intraosseous implant and an enthetic fossa for a two time method intraosseous implant.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a one-time endosseous implant.

[0002]

2. Description of the Related Art At present, there are two types of intraosseous implants (hereinafter sometimes abbreviated as implants) in the dental field: a cylinder type and a blade type. Cylinder type implants having a cylindrical appearance shape are roughly classified into three types: cylindrical, conical, and screw (including taper screw). Further, the blade type has a plate-like appearance.

Further, the implanting method of the implant is described in "2.
There are two methods, one is "one-time". In the “double procedure”, the implant is completely embedded in the bone at the time of implantation (first operation), and after several months, the gingiva is incised and the upper structure is attached to the implant (secondary operation). On the other hand, in the “single-time method”, the implant penetrates the gingiva at the time of implantation and is exposed in the oral cavity, and it is not necessary to incise the gingiva when mounting the upper structure.

The secondary operation of the double implant method is to incise the gingiva and wait for its healing and recovery (generally 1 to 6).
The upper structure (crown part) is attached for a week, but during this recovery period, the healing upper structure is provisionally attached to the incised gingival part. Without this, the gingiva may cover the implant again. Then, after healing and recovery, the regular upper structure is attached.

Superstructures for double implants include
A gingival penetrating member that penetrates a gingival portion and is fastened to an implant (hereinafter, referred to as a first upper structural body or an upper structural intermediate body), and a support abutment that is fastened or joined on the gingival penetrating member and is coupled to a crown portion ( Hereinafter, there is a system composed of a second superstructure or a superstructure upper body). There is also a gingival penetration type support abutment in which the first upper structure and the second upper structure are integrated.

The single-dose implant has an external appearance in which the double-dose implant and the first upper structure are integrated. Also, as the upper structure of the one-time implant,
The equivalent of the second superstructure of the double implant is used. As described above, the double implant method requires two incisions in the gingiva and a period for mounting the healing superstructure before mounting the regular superstructure. On the other hand, in the one-time implant, only one gingival incision is made at the time of implantation, and it is not necessary to use the healing superstructure. Therefore, for both the operator and the patient, the single-dose implant is superior to the double-dose implant in that the number of medical treatments and the cost are low.

[0007] However, in contrast to the two-step implant in which the implant method is not affected by external influences (stress, infection by bacteria in the oral cavity, etc.) until the bone and the implant are completely connected, the one-step implant is Since the upper end surface of the implant is exposed in the oral cavity after the implantation, there is a problem that the bone resorption progresses due to external influences and the possibility of the implant falling off as a result increases.

Therefore, it is not preferable to apply the one-time implant to a patient whose oral environment is not good due to alveolar pyorrhea or the like because there is a high risk of failure. Further, the position of the uppermost surface of the portion where the gingiva contacts the implant may change immediately after the gingival incision and after healing and recovery of the gingiva. Further, it is not preferable from the aesthetic point of view that the metal part of the implant is exposed in the oral cavity.

In the two-step implant in which the upper structure is attached after healing of the gingiva, it is possible to use the upper structure (eg, abutment) according to the height of the gingiva after healing, whereas the implant surgery is performed. In the case of the one-time implant in which the part corresponding to the upper structure (abutment) of the two-time implant (the gingival penetration part) is sometimes implanted, the metal on the upper part of the implant is often exposed after the healing of the gingiva. for that reason,
Single-occurrence implants are very difficult to use in the anterior teeth (especially the lower jaw) where aesthetics are important.

As mentioned above, a double implant and 1 implant
Compared with the single-stage implant, the single-stage implant is superior in terms of the number of operations and cost. However, the one-time implant has a problem that there is a high possibility that the implant will fall off due to the influence of the patient's oral environment, and that the site to be used is restricted from the viewpoint of aesthetics. Therefore, for dentists who use implants for dental treatment,
It is desirable (for both doctors and patients) to use one-time implant and two-time implant properly according to the patient.

[0011]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention However, the suppliers selling implants only supply one of the one-time implant and the two-time implant, and almost none of them provide both. The freedom of doctors for implant treatment is narrowed. Therefore, a dentist who wants to selectively use a single-stage implant and a double-stage implant depending on the patient has to purchase two different types of implant systems from different suppliers, which is very expensive. There is.

[0012] In implant treatment, it is common practice to manufacture a prosthesis by connecting each implant with a metal. However, when connecting the implants from different suppliers, there are problems in that the work difficulty increases, the degree of freedom of the prosthesis decreases, and the accuracy of the finished prosthesis tends to decrease. Furthermore, it takes a great deal of time for the dentist to learn complicated prosthetic procedures for both single and double implants, and also for the components for single and double implants. There is a problem in that there is a possibility that the preparation of the crown portion may fail due to confusion.

The present invention has been made in view of the above problems, and has a high degree of freedom in implant treatment, low cost, good workability in connecting implants, freedom in prosthesis, and completion. The accuracy of the restored prosthesis is high,
It has features that it does not require a great deal of time for learning the prosthodontic method and the possibility of making a crown part failure due to confusion of parts is extremely low. It is an object of the present invention to provide a one-time implant which can be used for implant treatment.

[0014]

Therefore, the present invention firstly provides, in a single-step intraosseous implant, at least a single-step intraosseous implant having a gingival penetration portion and an implant portion embedded in the bone. The shape of the implant portion is set so that the implant portion can be implanted in both the implant cavity and the implant cavity for the two-step intraosseous implant. 1) ”is provided.

Secondly, the present invention provides that "the gingival penetration shape by the double-dose intraosseous implant having the abutment or the superstructure intermediate body and the gingival penetration shape by the single-dose intraosseous implant are the same or substantially the same. The one-time endosseous implant (Claim 2) according to claim 1, wherein the gingival penetration portion is set to have the same shape.

A third aspect of the present invention is characterized in that "a fitting protrusion located at the upper end of the gingival penetration portion and a screw hole penetrating the protrusion and opening on the upper surface are provided. The first-stage intraosseous implant according to claim 1 or 2 is provided. In a fourth aspect of the present invention, "a fitting hole having a large diameter opened on the upper surface and a screw hole having a small diameter opened to the fitting hole are provided. An intraosseous implant (claim 4) ".

A fifth aspect of the present invention is that "a male screw fixing hole or a fastening member fixing hole having a tapered seat surface is provided at an upper end portion of the screw hole. The first-stage endosseous implant according to claim 5 is provided. A sixth aspect of the present invention is that "a single-stage intraosseous implant according to claims 3 to 5, wherein the fitting protrusion or the fitting hole is provided with a rotation stopping structure (claim 6)". I will provide a.

[0018]

In the upper part of the double implant (for example, 3 and 4), a smooth surface portion generally called "collar" is provided. The main body, which is the lower part, has a function of maintaining the implant in the bone and protecting the implant from shaking and falling off against various stresses generated in the oral cavity.

The implanting method of the double implant is different between the screw type implant 3 and the tapping type implant 4. The tap-in implant 4 can be implanted to a predetermined depth by forming a straight hole corresponding to the root diameter of the implant and then hitting the upper end surface of the implant directly or through a jig with a dental mallet or the like.

In the screw-type implant 3, the diameter of the collar portion is larger than the ridge diameter of the main body portion, and the collar portion functions as a screw head. Implantation of the screw-type implant 3 is performed by forming a straight hole corresponding to the root diameter of the implant, enlarging the hole corresponding to the brim into a mortar shape (perforation of the countersink), and finally using a tap to tap the screw part. A screw hole corresponding to is formed, and the implant 3 is embedded along the screw hole. In the conventional screw type intraosseous implant 3, this tap implantation technique has been mainly adopted.

Now, a one-time implant (for example, 1,
Similarly, in 2), there are two types, a tapping type 2 and a screwing type 1. The surgical method of the single-dose implants 1 and 2 is almost the same as that of the double-dose implants 3 and 4, but in the case of the single-dose screw type implant 1, the perforation of the counter sink becomes unnecessary. Further, since the diameters of the gingival penetration portions of the first implant implants 1 and 2 are increased with respect to the implant portion in the bone, the implants 1 and 2 are caught and locked on the upper surface of the bone.

That is, the one-time implants 1 and 2 are different from the tap-type two-time implant 4 which does not have a portion to be caught on the upper surface of the bone, and the screw-type two-time implants whose implantation position is determined by the perforation depth of the counter sink. Different from the method implant 3. Considering the above points, the one-time implant 1,
Intraosseous implant part V of 2 and 2 times implants 3 and 4 (hereinafter,
The diameter of the drill used for drilling can be made common by making the diameters of the implant portions (which may be abbreviated as "implanted portions") common (same or substantially the same). Furthermore, it is preferable to adjust the length of each embedding part V so that the position of the marker of the drill, which serves as a guide for the drilling position, is made common.

By using this common drill, when the operator immediately before the operation or when the gingiva is peeled to expose the bone, an implant suitable for the condition of the gingival thickness, inflammation or the like or the morphology of the bone can be obtained. You can choose. In addition, when drilling was started in advance with the intention to implant the one-time implants 1 and 2, but if the bone inside the jaw bone was found to be rough, the risk of falling out with the one-time implants 1 and 2 Because of the high cost, it is possible to flexibly change from single-stage implant implantation to double-stage implant implantation.

For the opposite reason, it is possible to change the implantation schedule of the double implants 3 and 4 to the implant of the single implants 1 and 2. The degree of compactness of the bone inside the jawbone cannot be known unless it is actually drilled. Therefore, it is very effective that the one-time implants 1 and 2 and the two-time implants 3 and 4 are used in common. Then, 1 of this invention
Implants for single-dose implants (eg 1, 2) are used for implants for single-dose implants and implants for double-dose implants so that the drills of the single-dose implants and double-dose implants can be shared. In order to be able to implant both in the implant cavity,
The shape of the implant part V in the bone was set (Claim 1).

Further, in the one-step implant of the present invention,
The gingival penetrating portion P has the same or substantially the same gingival penetrating shape as the gingival penetrating shape of the double implants 3 and 4 to which the abutment or the superstructure intermediate 5 is attached.
It is preferable to set the shape (Claim 2). In the second-stage implants 3 and 4, when the healing upper structure is attached in the secondary operation and the gingiva is healed after a certain period of time, the upper-structure intermediate body attached to the second-stage implants 3 and 4 The (first upper structure) 5 is fastened to the two-step implants 3, 4 by using the first fastening member (upper structure intermediate fastening member) 6. Further, an upper structure upper body (second upper structure) 7 is provided thereon with a second fastening member (upper structure upper body fastening member).
Fix with 9. Further, the crown portion 8 is produced on it.

On the other hand, in the one-time implant (for example, 1, 2) according to the second aspect, the first fastening member 6 for the two-time implant is first mounted, and the first fastening member 6 for the two-time implant is mounted thereon. By using the second fastening member 9, the upper structure upper body (second upper structure) 7 for the double implant is fastened,
The crown portion 8 can be produced on it. That is, the one-time implant according to claim 2 is a crown of the one-time implant using each component for the two-time implant (the first and second fastening members 6, 9 and the second upper structure 7). In the double implants 3 and 4 in which the crown portion 8 is manufactured by using the superstructure intermediate body (first superstructure body) 5 and the superstructure upper body (second superstructure body) 7. The prosthetic method is the mainstream of the current prosthetic method for implant dental treatment.

Therefore, the one-time implants 1 and 2 are formed by using the respective parts 6, 7, and 9 of the two-time implants 3 and 4.
The fact that the tooth crown portion 8 can be produced does not require learning of two types for learning a complicated prosthesis method, one for a one-time implant and one for a two-time implant, and confusion of parts does not occur. Therefore, the learning time of the prosthetic method is shortened,
Failures during the production of prostheses are less likely to occur. Further, since it is not necessary to prepare two kinds of parts (one-time method and two-time method), it is advantageous in terms of cost.

The single-step intraosseous implant (for example, 1) of the present invention has a fitting protrusion 1 located at the upper end of the gingival penetration portion P.
d and a screw hole 1a penetrating the protrusion 1d and opening on the upper surface
Is preferably provided (Claim 3). Further, it is preferable to provide a fitting hole having a large diameter opened on the upper surface and a screw hole having a small diameter opened to the fitting hole (claim 4).

Further, at the upper end portion of the screw hole 1a, a male screw fixing hole or a fastening member fixing hole 1 having a tapered seat surface is provided.
It is preferable to provide c (claim 5). Further, it is preferable to provide a rotation preventing structure on the fitting protrusion 1d or the fitting hole (claim 6). By providing a fitting protrusion or a fitting hole in the once-intraosseous implant of the present invention, each component (first and second fastening members, second upper structure) is attached to the once-intraosseous implant or At the time of fastening, by fitting the fitting protrusion or the fitting hole with the fitting portion of the upper structure upper body (second upper structure), the axes of the screw holes and the through holes are aligned, and the fastening member is The tightening operation can be made easier and more reliable.

Further, by providing the fitting protrusion or the fitting hole with the rotation preventing shape, it becomes possible to temporarily fix the upper structural upper body (second upper structural body) to the single method intraosseous implant. Thus, the operation of tightening the fastening member can be performed more easily and reliably. As the shape to be given to the fitting protrusion or the fitting hole, a circle, an ellipse, a polygon (for example, a quadrilateral octadecagon), a star polygon, etc. are preferable, but a hexagon or an octagon is particularly easy to operate. In, it is more preferable.

Further, it is more preferable that the side surface of the fitting protrusion or the fitting hole is tapered so that the upper structure upper body can be inserted obliquely. Hereinafter, the present invention will be described more specifically by way of examples, but the present invention is not limited to these examples.

[0032]

EXAMPLES Examples will be described with reference to FIGS. 1 to 14. FIG. 1 is a side view of a screw type one-time implant 1 (one example), and FIG. 2 is a schematic sectional view thereof. Implant 1
Has a screw hole 1a, a counterbore hole 1b, an upper abutment screw fixing hole (an example of a fastening member fixing hole having a tapered seat surface) 1c, and an upper fitting protrusion 1d.

FIG. 3 shows a single-use implantable implant 2
It is a side view of (one example), and FIG. 4 is the schematic sectional drawing. The implant 2 has a screw hole 2a, a counterbore hole 2b, an upper abutment screw fixing hole 2c, and a fitting protrusion 2d on the upper surface. FIG. 5 is a side view of the screw type double implant 3 (one example), and FIG. 6 is a schematic sectional view thereof. The implant 3 has a screw hole 3a opened on the upper surface and a fitting protrusion 3b on the upper surface.

FIG. 7 shows a double implant implant type implant 4
It is a side view of (one example), and FIG. 8 is the schematic sectional drawing. The implant 4 has a screw hole 4a opened on the upper surface and a fitting protrusion 4b on the upper surface. FIG. 9 shows a screw type double implant 3, an abutment (an example of an upper structure intermediate body) 5, an abutment screw (an example of a member for fastening an upper structure intermediate body) 6, a gold cylinder or an acrylic core (an upper structure upper body). 2 is a schematic view (side view) of a crown (an example of a crown portion) 8, and a crown screw (an example of an upper structure upper body fastening member) 9.

FIG. 10 shows a screw type one-time implant 1,
It is a schematic diagram (side view) of an abutment screw 6, a gold cylinder or an acrylic core 7, a crown 8, and a crown screw 9. FIG. 11 is a schematic sectional view of the abutment 5 of FIG. The abutment 5 has a vertically penetrating hole 5a, an upper abutment screw fixing hole 5b, a lower fitting hole 5c that fits into the fitting protrusion 3b, and an upper fitting protrusion 5d.

FIG. 12 is a schematic side view of the abutment screw 6 shown in FIGS. The abutment screw 6 includes a screw leg 6a screwed into the screw hole (1a or 3a), a tapered screw head 6b locked in the abutment screw fixing hole (1c or 5b), and an elastically deformable constriction. Body portion 6c and the screw hole (1a
Or it has a rod tip portion 6d which enters into 3a).

Next, the method of implanting and fenestration of the one-time implant and the two-time implant will be described based on the above configuration. First, an implant cavity is formed in the jawbone and an implant is implanted (FIG. 13). For the screw type single implant 1 and double implant 3, the same straight drill is used to pierce the bone to the same depth, and then the same tap is used to form the tap hole.

Regarding the double implant 3, the perforation using the counter sink is inserted before the tap perforation. After that, 1-time implant 1 and 2-way implant 3
To implant. For the tap-in type single implant 2 and double implant 4, the same straight drill is used to pierce the bone to the same depth, and then the single implant 2 and double implant 4 are implanted.

As described above, the one-time implant of the present invention can be implanted using the perforation device for the two-time implant. After implantation, a sealing cap is attached to the screw holes of the implants 1, 2, 3, 4. After that, for the double implants 3 and 4, the gingiva is placed on the artificial tooth root and the gingiva is sutured.

In addition, after confirming the connection between the bone and the artificial root, the double implants 3 and 4 (about 3 months to 1 year)
Second surgery is performed and the healing superstructure is attached.
The mounting method of the upper structure is shown in FIGS. In addition, FIG. 14 shows an implant implanted in the jawbone and a mounted crown.
Shown in Regarding the one-time implants 1 and 2, first, the abutment screw 6 is inserted from the counterbore holes 1b and 2b of the implants 1 and 2, and tightened with an arbitrary tightening torque to screw the foot 6a and the dental implant 1, The two screw holes 1a, 2a were screwed together to fasten the abutment screw 6 and the dental implants 1, 2.

At this time, the taper-shaped screw head 6b of the abutment screw 6 is locked in the abutment screw fixing holes 1c and 2c of the implants 1 and 2,
A strong frictional force was generated. Therefore, implants 1, 2
The abutment screw 6 is strongly fixed to the abutment screw 6, and the abutment screw 6 is prevented from being loosened due to vibration and the like, and the abutment screw 6 in the implants 1 and 2 can be reliably prevented from being damaged.

Regarding the two-step implants 3 and 4, first, the abutment screw 6 is inserted from the through hole 5a of the abutment 5 and tightened with an arbitrary tightening torque, so that the screw leg 6a and the dental implants 3 and 4 are connected. The abutment screw 6 is screwed into the screw holes 3a and 4a.
And the dental implants 3 and 4 were fastened. At this time, the taper-shaped screw head 6b of the abutment screw 6
Was locked in the abutment screw fixing hole 5b of the abutment 5, and a strong frictional force was generated.

Therefore, the abutment screw 6 is strongly fixed to the abutment 5, and the abutment screw 6 is prevented from being loosened due to vibration or the like, and the abutment screw 6 in the implants 3 and 4 can be surely prevented from being damaged. It became so. Next, implant 1
4 to the inner component 7 by the casting method or the casting technique.
The tooth crown (or metal frame) 8 manufactured by was fastened with the fastening screw 9. At this time, the space formed above the fastening screw 9 was closed (sealed) using various dental resins.

FIG. 15 shows a screw type one-time implant 10
FIG. 16 is a schematic sectional view (one example). The implant 10 has a screw hole 10a and a fitting hole 10b on the upper surface.
Also for the screw type and tapping type single implant implants and double implant implants of the type in which a fitting hole is provided on the upper surface, the same surgical instrument and upper structure can be used as in the implants 1 to 4. .

As described above, the one-time implant of the present invention can be used to produce a crown by using the upper structure of the two-time implant.

[0046]

As described above, according to the present invention,
A single implant can be implanted with a double implant implant and the crown of the single implant can be made using the superstructure of the dual implant. As a result,
A dentist who uses an implant for dental treatment can selectively use the one-time implant and the two-time implant depending on the implantation site or the patient's oral environment. Further, even during the implantation operation, the implantation can be changed between the one-time implant and the two-time implant, which increases the degree of freedom of implant treatment.

Further, since the parts are made common, the cost for the parts is reduced.

[Brief description of drawings]

FIG. 1 is a side view of a screw type one-time implant (one example) 1.

2 is a schematic cross-sectional view of the one-time implant 1 of FIG.

[Fig. 3] is a single implantable implant method (example) 2
FIG.

4 is a schematic cross-sectional view of the one-time implant 2 of FIG.

FIG. 5 is a side view of a screw type double implant (example) 3;

FIG. 6 is a schematic cross-sectional view of the double implant of FIG.

FIG. 7: Hammer-type double implant (example) 4
FIG.

FIG. 8 is a schematic cross-sectional view of the double implant of FIG. 7.

FIG. 9 is a screw type double implant 3, abutment (an example of an upper structure intermediate body) 5, an abutment screw (an example of a member for fastening an upper structure intermediate body) 6, a gold cylinder or an acrylic core (upper structure). It is a schematic diagram (side view) of an example of an upper body 7, a crown (an example of a crown portion) 8, and a crown screw (an example of a member for fastening an upper structure upper body) 9.

FIG. 10 is a schematic view (side view) of a screw type one-time implant 1, an abutment screw 6, a gold cylinder or an acrylic core 7, a crown 8 and a crown screw 9.

11 is a schematic cross-sectional view of the abutment 5 of FIG.

FIG. 12 is a schematic side view of the abutment screw 6 of FIGS. 9 and 10.

FIG. 13 is a schematic view (side view) of perforation cavities (cross-sectional view) formed in the jawbone and implants 1 to 4 implanted therein.

FIG. 14 is a schematic view (cross-sectional view) in which the common upper structure is mounted on the implants 1 to 4 embedded in the perforation hole perforated in FIG. 13.

FIG. 15 is a screw type single-stage implant (another example).
It is 10.

16 is a schematic cross-sectional view of the one-time implant of FIG.

[Explanation of symbols]

1 ... Screw type one-time implant (one example) 1a .. screw hole 1b .. counterbore hole 1c .. abutment screw fixing hole (for fixing upper structure intermediate or first upper structure fastening member) Example of hole 1d ··· Fitting protrusion 2 · Tap-in type single implant method (example) 2a · · Screw hole 2b · · Counterbore hole 2c · · Abutment screw fixing hole (superstructure intermediate or An example of a fixing hole of the first upper structure fastening member) 2d ··· fitting protrusion 3 ··· screw type double implant (example) 3a · · screw hole 3b · · fitting protrusion 4 · ..Tap-in type double implant (one example) 4a..Screw hole 4b..Mating protrusion 5 ... Abutment (an example of upper structure intermediate or first upper structure) 5a .. Hole 5b ··· Abutment screw Fixing hole 5c ... Fitting hole 5d ... Fitting protrusion 6 ... Abutment screw (an example of the upper structure intermediate body fastening member or the first fastening member) 6a .. Screw leg 6b .. Screw head 6c ··· constricted body part (one example of elastically deformable part) 6d ·· Rod tip part 7 ··· Members forming the inside of the crown (one example of upper structure upper body or second upper structure) 8 ... Crown 9 ... Crown screw (an example of upper structure upper body fastening member or second fastening member) 10 ... Screw type one-time implant (another example) 10a, screw hole 10b, fitting Above hole

Claims (6)

[Claims] 1. A single-step intraosseous implant having at least a gingival penetration part and an implant part to be embedded in a bone, wherein a single-step intraosseous implant implant cavity and a double-step intraosseous implant implant are provided. A single-dose intraosseous implant characterized in that the shape of the implant portion is set so that it can be implanted in both of the cavities. 2. A gingival penetrating shape by a double-dose intraosseous implant having an abutment or a superstructure intermediate body and a gingival penetrating shape by the single-dose intraosseous implant have the same or substantially the same shape, The one-time intraosseous implant according to claim 1, wherein the shape of the gingival penetration portion is set. 3. The one-time method according to claim 1, wherein a fitting projection located at an upper end of the gingival penetration portion and a screw hole penetrating the projection and opening on an upper surface are provided. Intraosseous implant. 4. The single-dose intraosseous implant according to claim 1, wherein a fitting hole having a large diameter opened on the upper surface and a screw hole having a small diameter opened on the fitting hole are provided. 5. The single-dose intraosseous implant according to claim 3, wherein a male screw fixing hole or a fastening member fixing hole having a tapered seating surface is provided at an upper end portion of the screw hole. . 6. The one-time intraosseous implant according to claim 3, wherein the fitting protrusion or the fitting hole is provided with a rotation stopping structure.