JPS6034253Y2 - dental implant material - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to improvements in dental implant materials.

As a conventionally used dental implant material, there is a blade-type implant material shown in FIG.

This blade type implant material has head parts a, a
, a shoulder part and a plurality of leg parts C, c..., and a shoulder part and a plurality of leg parts C, c...
... is formed into a thin plate shape.

In addition, the lower ends of the leg portions C, c, etc. are sharply formed, and the driving ridge lines d, d/curves thereof run in the vertical direction Q, Q.

By the way, as shown in Fig. 8, this blade-type implant material is implanted in the alveolar bone e, but the shoulder part and the leg parts C, c... Because the curves are thin, the lateral force direction P, P
It has the disadvantage that it tends to wobble and the support by the alveolar bone e becomes unstable.

As a conventionally used dental implant material, there is this outer T-shaped implant material, but this case also has the same drawbacks as the blade-type implant material.

The purpose of this invention is to correct the drawbacks of the above conventional example,
As illustrated in the illustrated embodiment, a plurality of leg portions 1a
At least one leg portion 1a of ib... is formed so that it has a width larger than the width A of the shoulder part 2 and a portion whose thickness is sufficiently smaller than the width. At the same time, the driving ridge line 3 at the lower end is moved in the horizontal direction P.
, P to constitute the dental implant material.

Hereinafter, the present invention will be specifically explained based on embodiments shown in the drawings.

The first embodiment shown in FIGS. 1 to 5 includes a head portion 5 having a neck portion 4, a horizontal rod-shaped shoulder portion 2, a pair of leg portions 1a extending downward from both ends of the shoulder portion 2, 1
Consists of b.

One leg portion 1a is formed into a trapezoidal shape, and the entire width of the other portion 7 excluding the upper end 6 is larger than the width A of the shoulder portion 2.

The lower end 8 of this leg portion 1a is formed in a semicircular shape, and its ridge line (in this case, a line connecting the vertices of the semicircular portion) 3 runs in the lateral direction P, P. There is.

The other leg portion 1b is formed to have the same width as the shoulder portion 2, but the driving ridge line 3a at the lower end thereof
are running in the lateral force direction P, P similarly to the leg portion 1a.

Note that the lateral direction here refers to the longitudinal direction (vertical direction, Q,
Of course, it refers to a direction perpendicular to Q), but also a direction that intersects with the longitudinal direction at a certain degree of inclination.

The head part 5, the shoulder part 2 and the two leg parts 1
Preferably, a and 1b are integrally formed from titanium, an alloy of titanium and aluminum, ceramic, or the like.

Also, the entire outer surface or at least the leg portions 1a, lb
It is preferable to form minute irregularities with a surface roughness of 30 to 120 μm on the outer surface of the substrate by blasting, thermal spraying, or the like.

The second embodiment shown in FIG. 6 is formed almost the same as the first embodiment, but is characterized in that a plurality of through holes 9, 9 are provided in the trapezoidal leg portion 1a. There is.

According to this embodiment, as time passes after the implant material is implanted, the tissue of the alveolar bone e is generated within the through holes 9, 9, so that the implant material is more firmly supported by the alveolar bone e. The effect is that it is possible to

The third embodiment shown in FIG. 7 includes two head parts 5.5, shoulder parts 2 and three leg parts 1a, 1. It consists of b and la.

Two leg parts 1a located on the inner circle side of the three leg parts
, la are formed similarly to the trapezoidal leg portion 1a of the first embodiment.

Also, the driving ridge lines 3.3 of the three leg parts 1a, lb, and la
at 3 both run in the lateral force direction P, P.

FIG. 5 shows how the implant material of the first embodiment is applied to the alveolar bone e.
It shows the state where it is planted.

f is the incised soft tissue, which is joined after the implant material is prepared.

g is a T-shaped channel for inserting the implant material.

The present invention can be configured in various ways other than those shown in the above embodiments.

For example, although the implant material in the above embodiment has the head portion 5, it may not have the head portion 5.

Further, all of the plurality of leg portions 1a, lb, .

Furthermore, the leg portion 1a configured in this manner can be formed into various shapes other than the trapezoidal shape.

Since the present invention has the above configuration, the following effects can be achieved.

■ At least one of the plurality of leg parts is formed so that there is a part having a width larger than the width of a part of the shoulder, and the driving ridge line at the lower end is set in the horizontal direction. , it is possible to eliminate the lateral wobble of the implant material and to stably and firmly implant it into the alveolar bone.

Also, since the thickness of the above part is sufficiently small compared to the width,
The channel formed in the alveolar bone can be formed into a slit shape, which is advantageous in terms of channel formation and protection of the human body.

■ At least one of the leg parts is formed so that there is a part having a width larger than the width of a part of the shoulder, so that it is difficult to remove the implant material after it is placed in the alveolar bone. Become.

■ The upper structure can be supported by planting multiple legs in the alveolar bone, so the masticatory force can be distributed to each leg.

Therefore, the stimulation given to the alveolar bone during mastication can be reduced, there is no pain even when chewing something hard, and the denture can be used in a state similar to that of natural teeth.

[Brief explanation of the drawing]

Fig. 1 is a front view of the first embodiment of the present invention, Fig. 2 is its right side view 1, Fig. 3 is its left side view, Fig. 4 is its top view, and Fig. 5 shows its usage state. FIG. 6 is a perspective view of the second embodiment of the present invention, FIG. 7 is a perspective view of the third embodiment of the present invention, and FIG. 8 is a perspective view of the conventional example in use. be. la, lb... Leg part, 2... Part of shoulder, 3... Driving ridge line.

Claims (1)

[Scope of utility model registration request] At least one of the plurality of leg parts is formed so that it has a width larger than the width of a part of the shoulder and a part whose thickness is sufficiently smaller than the width, and the lower end thereof. A dental implant material characterized in that the driving ridge line is set in the horizontal direction.