JP2006514840A - Implant - Google Patents

Abstract

【Task】
By developing a structure that can be directly planted without a drilling process and that minimizes the effect of the tension on the alveolar bone even if a tension is applied after the screw part of the implant is implanted in the alveolar bone, Provided is an implant having improved initial screw stability (by omitting a drilling process in which frictional heat is generated during planting) and medium-term stability (by appropriately distributing stress).
According to the present invention, a head is formed at an upper portion, and a fixing portion for fixing an elastic member, a tool coupling portion for coupling a tool, and a planting portion planted in a dental alveolus at a lower portion thereof. And a screw having a predetermined length, wherein the screw has an upper, lower, and narrow conical shape. A surface having a predetermined width is formed at two or more layers of the screw tip, and an acute angle is formed at the lower screw tip.

Description

  The present invention relates to an implant formed by deforming a screw structure of an implant used by being implanted in an alveolar bone when performing orthodontic treatment, and more specifically, a screw portion for correcting an orthodontics. When planting into the alveolar bone, it can be planted directly without a separate drilling process, and a wire or a spring (hereinafter referred to as an elastic member) is applied to the fixed part of the planted implant. The present invention relates to an implant in which the interface between the implant and the alveolar bone can be kept healthy by appropriately dispersing the stress caused by applying the tension (in combination).

  Since orthodontic implants are used for treatment for the purpose of fixation, it is most important to ensure stability. However, stability is the primary stability immediately after implant placement, and secondary during use of the implant. It can be broadly divided into two categories: mechanical stability.

  In order to improve the primary stability immediately after the planting, it is necessary to maximize the contact surface with the frame while minimizing the damage to the frame at the time of planting. It is desirable to plant directly without a drilling process that generates frictional heat that is fatal to the job. In addition, in this way, if all tapping processes (forming threads) and drilling processes (forming holes) are omitted and immediately planted, soft tissue flap surgery is not necessary. It has the advantage that it is simple and the treatment time is short. However, for this purpose, the thread tip of the implant must form an acute angle.

  In order to improve secondary stability during treatment after the planting, the stress must be distributed so that the corrective force used for corrective treatment does not adversely affect the frame work, This is related to the shape of the screw portion, particularly the screw upper portion where the correction force is concentrated.

  As shown in FIG. 1, the orthodontic correction using the implant is performed by using the elastic member t after mounting the bracket 26 on the correction target tooth 11 and planting the screw portion 21 of the implant 20 in the alveolar bone 10. The one end thereof is coupled to the bracket 26, and the other end thereof is coupled to the fixing portion 23 of the implant 20 so as to correct the tooth 11 to be corrected while applying a predetermined tension.

At this time, the screw portion 21 of the implant 20 inserted into the alveolar bone 10 is subjected to the alveoli by the inclined surface of the screw portion while the implant 20 receives pressure in a direction in which the tension is applied by the tension generated from the elastic member t. Excessive shear that can negatively affect bones
Therefore, there is an urgent need for a structure of the screw portion 21 that can improve the force, for example, because the alveolar bone is absorbed and the interface between the implant and the alveolar bone cannot be maintained healthy.

  However, as shown in FIG. 2, the conventional implant (Korean Utility Model Registration Application No. 1999-30323) has a head 22 formed at the upper part, and a fixing part 23, a tool coupling part 24, A projecting portion 25 and a screw portion 21 to be planted on the alveolar bone 10 are formed to a predetermined length at the lower end where a space sufficient to allow the elastic member t to be applied is secured.

  In the implant 20 having the above-described configuration, when the screw portion 21 is viewed, it is a normal screw-nail shape, and the screw thread 27 has an equally acute angle from the upper end to the lower end of the screw portion 21, Stress concentrates on the cutting surface of the screw 21 planted in the alveolar bone 10 due to the tension generated in the elastic member t mentioned above, whereby the alveolar bone is absorbed and the stability of the implant rapidly decreases. To do.

  This will be described in more detail with reference to FIGS. 3A and 3B. First, in order to correct the correction target tooth, the screw portion 21 of the implant 20 is planted in the alveolar bone 10 (see FIG. 3A), and the elastic member. When the other end of t is applied to the space above the protrusion 25 so as to have a predetermined tension, the implant 20, that is, the threaded portion 21 generates a tension as shown in FIG. 3B due to the tension of the elastic member t. Lean toward you.

  Therefore, not only an excessive shearing force that may adversely affect the alveolar bone is generated by the inclined surface of the screw part 21, but stress concentrates on the tip of the sharp screw thread and the alveolar bone is absorbed thereby. Alveolar bone support is reduced, relative stress is increased, alveolar bone resorption is accelerated, and the implant can eventually fall off.

In addition to the implants having the above-mentioned problems, various types of orthodontic implants have been conventionally provided. In any of these screw parts, the thread reaches from the upper end to the lower end of the screw part. It has a screw structure that requires an even acute angle and a drilling process that generates fatal heat to the alveolar bone at the time of planting, so the planting process or use depends on the structural problems. Occasionally, there has been the problem of reducing the stability by causing undesirable damage to the alveolar bone.

Korean Utility Model Registration Application No. 1999-30323

  The present invention has been made in view of the above-mentioned various problems. The purpose of the present invention is to enable direct planting without a drilling process, and to apply tension after implanting the screw portion of the implant into the alveolar bone. However, by developing a structure that minimizes the effect of the tension on the alveolar bone, the initial stability of the implant screw (by eliminating the drilling process that generates frictional heat during planting) and the mid-term The object is to provide an implant with improved stability (by properly dispersing stress).

  In order to achieve the above-mentioned object, the present invention has a head formed at the upper part, and a fixed part for fixing an elastic member, a tool connecting part for connecting a tool, and a dental alveolus at the lower part. An implant having a predetermined length and a screw having a predetermined length, wherein the screw has an upper, lower, and lower conical shape, and among the screw threads made of the conical shape, A surface having a predetermined width is formed at the upper end of the upper thread layer or two or more layers, and an acute angle is formed at the lower thread end.

  In addition, the thread formed with the surface having the predetermined width is made to be 1/2 or less of the entire length of the screw, and the width of the surface formed at the tip of the thread is positioned at the uppermost part. The width of the thread surface to be formed is the widest, and it is formed so that it gradually becomes narrower toward the lower part.

  The implant of the present invention is a frictional heat that can inactivate the alveolar bone at the time of implantation by forming a screw tip having a surface with a predetermined width in the upper part of the plurality of screw threads. The initial stability of the implant screw can be improved by omitting the perforation process in which the occurrence of sag occurs, and the medium-term stability can be improved by appropriately dispersing the stress.

  The implant configured as described above will be described in detail with reference to the accompanying drawings.

  4 of the present invention is a perspective view of the implant according to the present invention, and FIG. 5 is a sectional view of the implant according to the present invention. First, the head 31 positioned at the top of the implant 30 has an elastic member at the lower part thereof. The diameter is larger than the fixing part 32 formed to fix t. The reason is that when the elastic member t is fixed to the fixing portion 32, the fixed elastic member t is prevented from coming out to the outside.

  A fixing portion 32 for fixing the elastic member t is formed below the head 31 so as to be smaller than the diameter of the head 31 and to have a predetermined length. The reason why it is formed is that it can be easily fixed and securely fixed (connected) regardless of the diameter of the elastic member t.

  In addition, a tool coupling portion 33 for coupling a hand tool when the implant 30 is planted in the alveolar bone 10 is formed below the fixing portion. The tool coupling portion 33 has a hexagonal nut shape. The diameter is larger than the diameter portion of the fixed portion 32. This is because, like the head 31, when the elastic member t is fixed to the fixing portion 32, the fixed elastic member t is prevented from being detached from the fixed position.

  And the planting part 34 planted by the alveolar bone 10 is formed in the lower part of the said tool coupling | bond part 33 with predetermined length, and is formed smaller than the diameter of the said tool coupling | bond part 33, A screw 35 made of a conical shape having an upper, lower, and narrow shape is formed at a lower portion so as to have a predetermined length.

  The screw thread 36 of the screw 35 formed to have the predetermined length is formed to have a plurality of layers, and the upper part of the screw threads 36 formed to have the plurality of layers. The thread tip 37 of one layer or two or more layers is formed with a surface 38 having a predetermined width, and the thread tip 37 below that has an acute angle.

  The reason why the surface 38 having a predetermined width is formed at the screw tip 37 is to eliminate the problem of the conventional screw portion. As shown in FIG. 6A, the screw 35 is implanted in the alveolar bone 10. Then, when the tension of the elastic member t is applied, the surface 38 of the thread tip 37 is in contact with the alveolar bone 10 as shown in FIG. This is to prevent the alveolar bone 10 from being injured by applying only the pressing force.

  However, it is desirable that the thread 36 layer on which the surface 38 having the predetermined width is formed should hold 1/2 or less of the entire length of the screw 35, but if necessary, only the upper one layer or two layers May be used, or may be used by forming 1/2 or more of the entire length of the screw 35.

  Further, it is desirable that the width of the surface 38 formed at the tip of the thread 36 is formed so that the width of the thread surface 38 located at the uppermost part is the widest and becomes gradually narrower toward the lower part. However, the reason is that the screw 35 is easily planted when it is implanted in the alveolar bone 10 and exhibits a safe support force after the planting is completed.

  The implant of the present invention as described above improves the initial stability of the screw of the implant by omitting the drilling process in which frictional heat that can deactivate the alveolar bone during the orthodontic treatment is generated, It is possible to improve medium-term stability by appropriately dispersing.

It is the schematic which shows the state which corrects a dentition using an implant. It is a perspective view which shows one Example of the conventional implant. It is an effect | action figure for demonstrating the problem at the time of the said conventional implant screw part being planted to gums. It is an operation view for explaining a problem when the conventional implant screw part is planted in the gingiva together with FIG. 3a. It is an implant perspective view concerning the present invention. It is an implant sectional view concerning the present invention. It is an effect | action figure for demonstrating the advantage at the time of the implant screw part which concerns on this invention being planted in the alveolus. FIG. 6a is an operation diagram for explaining the advantages when the implant screw portion according to the present invention is planted in the alveoli together with FIG. 6a.

Explanation of symbols

30 implants
31 heads
32 fixed part
33 Tool joint
34 Planting Department
35 screws
36 Screw thread
37 Thread Tip
38 Thread tip

Claims (4)

A head (31) is formed in the upper part, and a fixed part (32) for fixing the elastic member, a tool connecting part (33) for connecting the tool, and a planting part to be planted in the alveolar bone at the lower part thereof (34) and a screw (35) having a predetermined length, which are sequentially formed,
The screw has an upper, lower and narrow conical shape, and among the conical thread (36), the upper one layer or two or more layers of the screw tips (37) have a predetermined width (38). ) And an acute angle is formed at the lower thread tip.   The implant according to claim 1, wherein the thread (36) layer on which the surface (38) having the predetermined width is formed is ½ or less of the entire length of the screw (35).   The width of the surface (38) formed at the tip of the thread (36) is such that the width of the thread surface located at the top is the widest and becomes gradually narrower toward the lower part. The implant according to claim 1.   The fixing part formed on the upper part of the screw implanted in the alveolar bone is configured to apply tension to the correction target tooth and fix one side of the elastic member (t) that corrects the correction target tooth. The implant according to claim 1.

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