CN101262831A

CN101262831A - Orthodontic implant

Info

Publication number: CN101262831A
Application number: CNA038135434A
Authority: CN
Inventors: 金政文; 金钟佑; 朴永哲; 李钟奭
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-06-27
Filing date: 2003-06-25
Publication date: 2008-09-10
Also published as: KR100430770B1; EP1515662A1; WO2004002356A1; AU2003243038A1; JP4163179B2; JP2006514840A; KR20020065873A

Abstract

Disclosed is an orthodontic implant having a head part formed at an upper end thereof, a connection part for connection of an elastic member, a tool engagement part for engagement of a tool, a uniform diameter part, and a screw part having a predetermined length to be driven into an alveolar bone, which are sequentially formed in a downward direction. The screw part of the present invention has a sectional shape of an inverted cone which is widened at an upper end thereof and pointed at a lowered end thereof, and a pre-selected upper portion of a thread of the screw part, which portion corresponds to one or more leads of the thread, is formed to have a flattened crest of a predetermined width, and the remaining portion of the threads of the screw part are formed to have sharp-edged crest.

Description

Orthodontic implant

Technical field

The present invention relates to a kind of orthodontic implant that is used for being implanted in alveolar bone, relate in particular to a kind of like this orthodontic implant, its thread-shaped becomes the process that need not separately boring just can be entered into alveolar bone by driving directly, and can with by be installed in tooth on the silk thread that is connected of carriage or the power that acts on the implant of spring (hereinafter referred to as " flexible member ") more be evenly distributed on the connecting portion of implant so that implant reduces to minimum to the infringement of the osseous tissue of alveolar bone.

Background technology

In the orthodontics treatment of using implant, guarantee that the functional stabilization after implant is in being implanted to alveolar bone is very important.This stability of implant can be analyzed from two aspects.Stability after on the one hand to be that implant is firm be implanted in the alveolar bone is the stability of implant in the orthodontics therapeutic process that uses implant on the other hand.

Stability after implanting in order to ensure implant is firm is necessary and may reduces to minimum by the infringement to the osseous tissue of alveolar bone that this implantation causes.For this reason, preferably implant is directly driven and enter into alveolar bone.Under implant can directly be driven into situation in the alveolar bone, just there is no need in alveolar bone, to carry out individually the process of tapping and boring, this process can produce the deleterious frictional heat of the osseous tissue of alveolar bone, and further can make the orthodontics treatment expend the longer time.For implant, in order to reach this purpose, the screw thread of implant should be formed with sharp edges.

Stability in order to ensure implant in the orthodontics therapeutic process, be necessary will by be installed in tooth on the power that acts on the implant of the flexible member that is connected of carriage more be evenly distributed on the connecting portion of implant, and make implant that the infringement of the osseous tissue of alveolar bone is reduced to minimum thus.For implant, in order to reach this purpose, a specific part of screw thread should form has thick relatively or thick edge.

In the orthodontics therapeutic process that uses implant as shown in Figure 1, carriage 26 is installed on the tooth 11, and to correct, the threaded portion of implant 20 is driven in the alveolar bone 10.Then, by middle device for example silk thread the end of flexible member t is connected on the carriage 26, the other end of flexible member t is connected on the connecting portion of implant 20, thus, orthodontics is treated needed predetermined power and is just constantly acted on the tooth 11 continuously, to correct.

After in being implanted to alveolar bone, implant 20 is subjected to the power from flexible member t, because the threaded portion of implant 20 has the screw thread that has the sharp edges crest, the zone that the implant of alveolar bone is implanted is subjected to the sizable shear stress by the screw thread generation of implant 20.By this shear stress that is caused by screw thread, alveolar bone may little by little rupture, and the region generating of therefore implanting in the implant of alveolar bone is such as problems such as inflammation.

With reference to Fig. 2, show a kind of in the traditional implant disclosed in the Korean Utility Model Application No.1999-30323.Implant by Reference numeral 20 expressions is formed with head 22 in the end thereon.Connecting portion 23, instrument auxiliary section 24, annular flange portion 25 and threaded portion 21 form below head 22 successively.Annular flange portion 25 separate with instrument auxiliary section 24 so that flexible member can be connected implant 20 in the bar portion of extending between instrument auxiliary section 24 and the annular flange portion 25.The predetermined length that threaded portion 21 has is to be driven in the alveolar bone.

In the implant 20 with said structure, the threaded portion 21 that is driven in the alveolar bone has the shape of traditional screw, and like this, on the whole length of threaded portion 21, the crest of screw thread 27 all has sharp edges.Thereby the power that is acted on the implant 20 by flexible member concentrates on the alveolar specific part owing to the sharp crest of screw thread, and this will cause the fracture of the osseous tissue of alveolar bone subsequently.

More particularly, with reference to Fig. 3 a and 3b, in order to correct irregular tooth, the threaded portion 21 of implant 20 is driven in the alveolar bone 10 (sees Fig. 3 a), one end of flexible member is connected in the bar portion of extending between instrument auxiliary section 24 and the annular flange portion 25, is used for applying predetermined corrective therapy power to correct on target tooth.Yet because the existence of the sharp screw thread of threaded portion 21, excessive shear stress has produced injurious effects to alveolar bone, and alveolar bone is ruptured, and therefore, the threaded portion 21 of implant 20 is little by little to the direction inclination (seeing Fig. 3 b) of stress.As a result, increased the probability that implant 20 gets loose from alveolar bone.

Except above-mentioned implant, many kinds of orthodontic implants in this technical field, have been disclosed.Yet the screw thread of the threaded portion of these implants also all forms the crest that has sharp edges on its whole length, and perhaps the mode of holing separately with needs forms, and the process of this boring can produce the deleterious heat of osseous tissue.Therefore, traditional implant has following shortcoming on the whole, promptly in the orthodontics therapeutic process alveolar bone is produced injurious effects, and the result makes the serious variation of their functional stabilization.

Summary of the invention

The present invention considers that the problems referred to above that occur in the prior art make, and the object of the present invention is to provide a kind of implant, in this implant, thread-shaped becomes directly to be driven and enters into alveolar bone, and need not carry out independent boring procedure, so that implant reduces to minimum to the infringement of the osseous tissue of alveolar bone, thus, improve the functional stabilization of implant.

For realizing described purpose, according to the present invention, a kind of orthodontic implant is provided, this implant has the head of end formation thereon, the connecting portion that is used to connect flexible member that forms successively in a downward direction, the instrument auxiliary section that is used for engagement tool, homogeneous diameter portion and have predetermined length enters into alveolar bone with driving threaded portion, wherein, the threaded portion has the cross section of inverted cone, this cross section end thereon is wide, in its bottom is a tip, the previously selected top of the screw thread of threaded portion forms the flat crest with preset width, and this part is corresponding to one or more helical pitches of screw thread, and the remainder of the screw thread of threaded portion forms the crest with sharp edges.

In the present invention, the length on the top of previously selected, the flat crest with preset width of the screw thread of threaded portion is equivalent to half of predetermined length of whole threaded portion, and has maximum width and the mode that reduces gradually towards its bottom width forms in the end thereon with flat crest.

Description of drawings

In conjunction with the accompanying drawings, will to above-mentioned purpose, feature and other advantage with other of the present invention more clear and definite understanding be arranged from following detailed description, wherein accompanying drawing comprises:

Fig. 1 is that expression uses implant to carry out the sketch map of the state of positive tooth treatment.

Fig. 2 is the perspective view of the traditional implant of expression.

Fig. 3 a and 3b are the views that is used for illustrating the problem that causes when the threaded portion of traditional implant is driven in the alveolar bone.

Fig. 4 is the perspective view of expression implant according to an embodiment of the invention.

Fig. 5 is the cutaway view of expression according to implant of the present invention.

Fig. 6 a and 6b are the views that the advantage that is had when the threaded portion according to implant of the present invention is driven in the gingiva is described.

The specific embodiment

With reference now to accompanying drawing,, wherein, in all different accompanying drawings, use identical Reference numeral to represent identical or similar element.

Fig. 4 is the perspective view of expression implant according to an embodiment of the invention; Fig. 5 is the cutaway view of expression according to implant of the present invention.Implant 30 according to an embodiment of the invention has the head 31 of end formation thereon.Connecting portion 32 forms in the lower end of head 31, so that flexible member t connects herein.The diameter of head 31 is greater than the diameter of connecting portion 32, to prevent that flexible member t is by mistake unloaded when flexible member t is connected with connecting portion 32.

Connecting portion 32 has pre-set length, its be formed on the lower end of head 31 so that flexible member t connects herein and its diameter less than the diameter of head 31.Therefore, flexible member t can easily be connected on the connecting portion 32.

Instrument auxiliary section 33 forms like this in the lower end of connecting portion 32, and promptly when driving implant 30 entered into

alveolar bone

10,33 cooperations around the instrument auxiliary section can make tool.Instrument auxiliary section 33 has the shape of hex nut shape.The diameter of instrument auxiliary section 33 is greater than the diameter of connecting portion 32, and is identical with the situation of head 31, is used for preventing promptly that flexible member t is by mistake unloaded when flexible member t is connected with connecting portion 32.

Homogeneous diameter portion 34 forms in the lower end of instrument auxiliary section 33, and it has pre-set length and the diameter diameter less than instrument auxiliary section 33.Threaded portion 35 forms like this in the lower end of homogeneous diameter portion 34, and threaded portion 35 is driven in the alveolar bone 10 to remain on wherein regularly.Threaded portion 35 has the predetermined length and the cross section of inverted cone, and this cross section end thereon is wide, is a tip in its bottom.

Threaded portion 35 forms the predetermined length that has corresponding to several helical pitches of screw thread 36.The previously selected top of the screw thread 36 of threaded portion 35 forms in the mode that the crest 37 of screw thread 36 has the flat surface 38 of preset width, this part is corresponding to one or more helical pitches of screw thread 36, and the remainder of the screw thread 36 of threaded portion 35 forms in the mode that the crest 37 of screw thread 36 has the crest of sharp edges.

The reason that forms the flat surface 38 with preset width on the crest 37 of screw thread 36 is the problem that occurs in traditional threaded portion in order to solve.That is to say, shown in Fig. 6 a, after threaded portion 35 is driven in the alveolar bone 10, when the pulling force of flexible member t acts on the implant 10, contact because the surface is carried out with alveolar bone 10 like that in the flat surface 38 of the crest 37 of screw thread 36 shown in Fig. 6 b, power acts on the alveolar bone 10 in the mode of distribution rather than in the mode on the part that concentrates on alveolar bone 10, with incision alveolar bone 10, therefore, the infringement to alveolar bone 10 can reduce to minimum.

Although the length on the top of previously selected, the flat crest 37 with preset width of the screw thread 36 of threaded portion 35 is preferably the length that is equivalent to whole threaded portion 35 half, but can consider also that where necessary the previously selected top of screw thread 36 can have half of length that is equivalent to one or two screw thread 36 helical pitches or the predetermined length that surpasses whole threaded portion 35.

The previously selected top of the screw thread 36 of threaded portion 35 is preferably with flat crest 37 has maximum width and the mode that reduces gradually towards its lower end width forms in the end thereon.Its reason is in order to make threaded portion 35 be easy to be driven in the alveolar bone 10, and obtains stable holding power thus after implant 30 is installed.

Industrial Applicability As

From above-mentioned obviously as seen, the advantage that implant according to the present invention provides is, owing to omitted the boring procedure that can produce to the deleterious frictional heat of osseous tissue of alveolar bone, improved the functional stabilization of implant, and more be evenly distributed on the alveolar bone owing to act on the power of the flexible member on the implant, therefore further improved the functional stabilization of implant.

Although for illustrative purposes, disclosed the preferred embodiments of the present invention, those skilled in the art should know, only otherwise break away from scope of the present invention and the thought disclosed in the appended claims, can carry out various modifications, augment and replace.

Claims

1. orthodontic implant, this implant has the head of end formation thereon, the connecting portion that is used to connect flexible member that forms successively in a downward direction, the instrument auxiliary section that is used for engagement tool, homogeneous diameter portion and have predetermined length to be driven into the threaded portion in the alveolar bone, wherein, the threaded portion has the cross section of inverted cone, this cross section end thereon is wide, in its bottom is a tip, the previously selected top of the screw thread of threaded portion forms the flat crest with preset width, this part is corresponding to one or more helical pitches of screw thread, and the remainder of the screw thread of threaded portion forms the crest with sharp edges.

2. orthodontic implant according to claim 1 is characterized in that, the length on the previously selected top of the screw thread of threaded portion is equivalent to half of predetermined length of whole threaded portion, and it has the flat crest of preset width.

3. orthodontic implant according to claim 1 is characterized in that, the previously selected top of the screw thread of threaded portion has maximum width and the mode that reduces gradually towards its bottom width forms in the end thereon with flat crest.

4. orthodontic implant according to claim 1, it is characterized in that the function that enters into the connecting portion that forms on the threaded portion of alveolar bone in driving is to be connected herein with the flexible member that carries out orthodontics being used for applying positive tooth treatment power on tooth.