CN105411697A - Dental implant - Google Patents
Dental implant Download PDFInfo
- Publication number
- CN105411697A CN105411697A CN201610013354.9A CN201610013354A CN105411697A CN 105411697 A CN105411697 A CN 105411697A CN 201610013354 A CN201610013354 A CN 201610013354A CN 105411697 A CN105411697 A CN 105411697A
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- Prior art keywords
- implant
- tooth
- thread
- linkage section
- base station
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
- A61C8/0022—Self-screwing
- A61C8/0025—Self-screwing with multiple threads
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
- A61C8/0034—Long implant, e.g. zygomatic implant
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
- A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
- A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
- A61C8/0069—Connecting devices for joining an upper structure with an implant member, e.g. spacers tapered or conical connection
- A61C8/0071—Connecting devices for joining an upper structure with an implant member, e.g. spacers tapered or conical connection with a self-locking taper, e.g. morse taper
Abstract
The invention provides a dental implant and relates to the technical field of medical supplies. The dental implant comprises a base table, a connection segment and an implant body. The two ends of the connection segment are connected with the base table and the implant body respectively, the end, close to the base table, of the implant body is provided with a multi-head thread, the other end is provided with a single-head thread, and the outer surface of the implant body is provided with multiple anti-spin grooves in the axis direction. The dental implant can effectively promote combination between the dental implant and the oral cavity tissue, and the combination effect is good.
Description
Technical field
The present invention relates to field of medical article technology, in particular to a kind of tooth implant.
Background technology
Tooth implant is a kind of Novel mouth dummy that recent 20 years develops rapidly, can be used as middle dummy implants in the alveolar bone at anodontia position, and combine closely with alveolar bone, play the effect of natural tooth root, to support artificial tooth, thus the dependence avoided base and healthy adjacent teeth, the function of tooth can be recovered preferably.It is good that tooth implant supports denture prognosis, the body sensation of patient and masticatory function can return to the level close to natural teeth, tooth implant substantially increases the quality of life of anodontia patient, is a kind of rising Novel mouth dummy, is also one of forward position of stomatology development.
The developing direction of tooth implant technology mainly concentrates on three aspects: by surface treatment and modification improve tooth implant and host's alveolar bone in conjunction with speed and intensity; Improve model design, make it to meet biomechanics requirement, and facilitate clinical practice; Reduce tooth implant shoulder position stress concentrate and promote the combination of tooth implant and tissue, form biological sealing.All these are the problems that domestic and international relevant speciality research field scientists is constantly explored, improves and innovated always.See with regard to national situations, Sichuan University's biomaterial Engineering Research Center with the bioactivity coatings technology series surface modifying technology that is representative substantially solve tooth implant and alveolar bone in conjunction with problem, by the tooth implant model design of three-dimensional finite element stress analysis optimal design, substantially biomechanics requirement is met, can in conjunction with firm with alveolar bone after implanting.But for last, the but never good tooth implant of a kind of effect in prior art, concentrates to reduce existing tooth implant shoulder position stress, causes implant shoulder surrounding bone to absorb, and tooth implant and the poor problem of tissue bond.
Summary of the invention
In view of this, the invention provides a kind of tooth implant, to improve existing tooth implant and the poor problem of tissue bond.
For achieving the above object, the invention provides following technical scheme:
A kind of tooth implant, comprise base station, linkage section and implant, the two ends of described linkage section connect described base station and described implant respectively, one end of the close described base station of described implant is provided with multiple thread, the other end is provided with one start screw, and the outer surface of described implant is provided with the anti-spin slot of multiple tracks in the axial direction.
The two ends of tooth implant are respectively equipped with one start screw and multiple thread, and multiple thread is arranged on the one end near base station, then when mounted, first be that single-threaded one end is screwed in, be fitted together to into alveolar bone, along with the screw-in gradually of the implant of tooth implant, multiple-threaded part will be threaded in alveolar bone.Tooth implant provided by the invention is implanted by gradual mode, and the design of two-part screw thread can make tooth implant in implantation process, extrude osseous tissue gradually, fixation.And the design of screw thread can be applicable to various sclerotin situation, be also applicable to immediate implant, plantation is convenient.In addition, the setting of anti-spin slot, depressed area can be provided for implant, and these depressed area, just can provide distribution space for alveolar bone, alveolar bone just can be occupied by the growth recovery in later stage, fill anti-spin slot, so, just destroy the verticity of the screw thread of implant, implant is firmly fixed in the alveolar bone in oral cavity, effectively can avoid the derotation of implant and the loosening of tooth implant entirety.
Tooth implant provided by the invention implant after fixation, and can carry out good combination with the oral cavity tissue such as osseous tissue, realize biological sealing, practicality is high, suitable for large-scale promotion.
Preferably, in above-mentioned tooth implant, anti-spin slot described in multiple tracks is all through to multiple thread from the one end at the one start screw place of implant.That is, the length of anti-spin slot is less than the length of implant, and namely anti-spin slot only penetrates into multiple thread place stops.This kind is arranged, and is conducive to body bone tissue growth and embeds while anti-spin slot, can also ensure double thread, locking between one start screw and body bone tissue, increase the probability that tooth implant is securely held.
Preferably, in above-mentioned tooth implant, described anti-spin slot is three roads.The three anti-spin slots in road can make tooth implant fixing more firm.
Preferably, in above-mentioned tooth implant, described linkage section is connected by Morse's taper self-locking with described implant.Linkage section is connected by Morse's taper with implant, is by after linkage section Shi Hanzhang, utilizes static friction principle to obtain enough frictional force, thus reach " cold welding " effect.Enough contact lengths (area) effectively can transmit the moment of torsion that bears when tooth implant is implanted, and make to chew stress and be uniformly distributed along whole contact surface, effectively prevent tooth implant shoulder stress from concentrating.
Preferably, in above-mentioned tooth implant, described linkage section and described implant are fixed by central screw.Fixed by central screw, easy to connect, reliable.
Preferably, in above-mentioned tooth implant, described central screw is provided with external screw thread, described implant is provided with the female thread of coupling, described externally threaded intensity is greater than the intensity of described female thread, the described externally threaded number of turns is less than the number of turns of described female thread, and described external screw thread all screws in described female thread, and remains with near the female thread of described linkage section the screw thread that at least half-turn is in free state.Free state is not namely by state that external screw thread mates, the female thread number of turns is more than externally threaded, so the external screw thread of central screw can all screw in the female thread of implant by force, after screwing in completely, not a half circle can also be remained to not by female thread that external screw thread mates.And be greater than female thread intensity due to external screw thread intensity, so after applying retention screws in by force, there is micro-deformation in the female thread of implant, central screw can be locked in female thread, cannot move, this kind of setting can effectively prevent the derotation of central screw from coming off.
Preferably, in above-mentioned tooth implant, the end of the end of the close described base station of described implant, remains with not by plane that described linkage section covers.In end, implant remains part planar, and this plane is not chimeric with linkage section, and also the section of being connected does not cover.So, when tooth implant is not implanted, from the appearance, the end (i.e. the shoulder position of implant) of that end of the close linkage section exposed part of implant, just remains with part planar; After tooth implant is implanted, body bone tissue or soft tissue growth are recovered, because end remains part planar, so can improve the concentrated phenomenon of stress.And when oral cavity tissue growth recovery, linkage section will form biological sealing with gingiva tissue, avoid oral cavity bacterium to invade implant, also just block the intrusion of antibacterial between implant and alveolar bone.Simultaneously, also just because of the plane of the reservation arranged, so oral cavity tissue can insert the space between this plane and linkage section in recovery process, thus tooth implant just can form good Qian He and biological sealing with oral cavity tissue, improve the stability of tooth implant initial planting, ensure that the long-term effect after tooth implant implantation, practicality is high.
Preferably, in above-mentioned tooth implant, the axis of described linkage section and the axis of described implant are on the same line.This kind is arranged, and make the plane at implant shoulder place be left a circle, when oral cavity tissue growth recovery, this circle plane can be covered by oral cavity tissue uniformly.
Preferably, in above-mentioned tooth implant, on described implant, the angle corresponding away from the tooth side of base station often enclosing screw thread is first jiao, and the angle that often the tooth side of the close base station of circle screw thread is corresponding is second jiao, and described first jiao is greater than described second jiao.What distribute around root of the tooth depths is spongy bone, and what distribute around the shallow place of root of the tooth is cortical bone, and the bone density of spongy bone is lower than cortical bone.When tooth implant is implanted, because first jiao that often encloses screw thread is greater than second jiao, this asymmetric gradual screw thread can meet the density requirements of different parts osseous tissue, and all screw threads all can be held locking surrounding oral tissue, avoids loosening of tooth implant.Simultaneously also can effectively disperse to chew stress, make it change normal pressure on interface into as far as possible.
Preferably, in above-mentioned tooth implant, described multiple thread is double thread.
Relative to prior art, the present invention includes following beneficial effect:
(1) be combined better with oral cavity tissue, realize biological sealing;
(2) fixation, effectively avoids loosening of tooth implant.
Accompanying drawing explanation
In order to the clearer explanation embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the tooth implant that the embodiment of the present invention one provides;
Fig. 2 is the cross-sectional schematic of the tooth implant that the embodiment of the present invention two provides;
Fig. 3 is the elevational schematic view of the tooth implant that the embodiment of the present invention two provides;
Fig. 4 is the cross-sectional schematic of the single-threaded wherein circle screw thread that the embodiment of the present invention two provides.
Wherein, Reference numeral gathers as follows:
Base station 101; Linkage section 102; Implant 103; Double thread 104; One start screw 105; Anti-spin slot 106; Central screw 107; Female thread 108; Outer six side's projections 109; Plane 110; First jiao 111; Second jiao 112.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.The assembly of the embodiment of the present invention describing and illustrate in usual accompanying drawing herein can be arranged with various different configuration and design.
Therefore, below to the detailed description of the embodiments of the invention provided in the accompanying drawings and the claimed scope of the present invention of not intended to be limiting, but selected embodiment of the present invention is only represented.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to define further it and explain in accompanying drawing subsequently.
In describing the invention, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. only for distinguishing description, and can not be interpreted as instruction or hint relative importance.
In describing the invention, also it should be noted that, unless otherwise clearly defined and limited, term " setting ", " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
Embodiment one
Fig. 1 shows the tooth implant that the embodiment of the present invention one provides, comprise base station 101, linkage section 102 and implant 103, the two ends of linkage section 102 connect base station 101 and implant 103 respectively, one end of the close base station 101 of implant 103 is provided with multiple thread, the other end is provided with one start screw 105, and the outer surface of implant 103 is provided with the anti-spin slot 106 of multiple tracks in the axial direction.
The two ends of tooth implant are respectively equipped with one start screw 105 and multiple thread, and multiple thread is arranged on the one end near base station 101, then when mounted, first be that one end of one start screw 105 is screwed in, be fitted together to into alveolar bone, along with the screw-in gradually of the implant 103 of tooth implant, multiple-threaded part will be threaded in alveolar bone.The tooth implant that the present embodiment provides is implanted by gradual mode, and the design of two-part screw thread can make tooth implant in implantation process, extrude osseous tissue gradually, fixation.And the design of screw thread can be applicable to various sclerotin situation, be also applicable to immediate implant, plantation is convenient.In addition; the setting of anti-spin slot 106; depressed area can be provided for implant 103; and these depressed area; just can provide distribution space for alveolar bone; alveolar bone just can be occupied by the growth recovery in later stage, fill anti-spin slot 106; so; just destroy the verticity of the screw thread of implant 103; implant 103 is firmly fixed in the alveolar bone in oral cavity; effectively can avoid the derotation of implant 103 and the loosening of tooth implant entirety, the fine motion of tooth implant can also be eliminated, protection alveolar bone.
Tooth implant that the present embodiment provides implant after fixation, and can carry out good combination with the oral cavity tissue such as osseous tissue, realize biological sealing, practicality is high, suitable for large-scale promotion.
In the present embodiment, multiple thread is double thread 104, and anti-spin slot 106 is three roads.The three anti-spin slots in road 106 can make tooth implant fixing more firm.Certainly, above-mentionedly to choose not as restriction, also can be set as other multiple thread, as three-start screw, and anti-spin slot 106 also can be set to together, four roads.For convenience of explanation, in following examples, multiple thread is double thread 104, and anti-spin slot 106 is all set to three roads.
The tooth implant that the present embodiment provides, base station 101 is connected with implant 103 by linkage section 102, and linkage section 102 is partly interposed in implant 103.One end of linkage section 102 is connected with base station 101, because the connection of this part belongs to prior art, does not repeat them here.And linkage section 102 inserts that end of implant 103, with implant 103 for being threaded.The outer surface of implant 103 is provided with one start screw 105 and double thread 104, and corona will be arranged on base station 101, if corona is the corona of lower tooth, then double thread 104 position is upper, one start screw 105 position under; If corona is the corona of upper tooth, then double thread 104 position under, one start screw 105 position is upper.In fact not clear band between one start screw 105 and double thread 104, namely implant 103 there is no smooth shaft-like section, and one start screw 105 and double thread 104 are adjacent, namely one start screw 105 be adjacent, arrange by double thread 104.
Embodiment two
On the basis of embodiment one, Fig. 2 and Fig. 3 shows the tooth implant that the embodiment of the present invention two provides, comprise base station 101, linkage section 102 and implant 103, the two ends of linkage section 102 connect base station 101 and implant 103 respectively, one end of implant 103 is provided with double thread, the other end is provided with one start screw 105, it is all through to double thread 104 from the one end at one start screw 105 place of implant 103 that the outer surface of implant 103 is provided with the equally distributed three anti-spin slots in anti-spin slot 106, three road, road 106.
That is this kind arranged, the length of anti-spin slot 106 is less than the length of implant 103, anti-spin slot 106 extends to double thread 104 (also can be called close screw thread) from that end of one start screw 105 (also can be called wide screw thread) namely to stop, do not extend into double thread 104, and non-through double thread 104.So, be conducive to body bone tissue growth and embed while anti-spin slot 106, double thread 104, locking between one start screw 105 and body bone tissue can also be ensured, increase the probability that tooth implant is securely held.And the processing mode on implant 103 surface can make implant 103 and body bone tissue be formed " Integrated implant ".Certainly, when arranging, anti-spin slot 106 also can not penetrate into double thread 104 place, but do not arrive double thread 104 place and namely stop, that is, if be initial measurement with that end of one start screw 105, just measured double thread 104 place and namely stopped, the length measured is the first length, then the length of anti-spin slot 106 also can be less than the first length.
The tapered design of implant 103, the one end namely from the one end at one start screw 105 place to double thread 104 place, the diameter of implant 103 is increasing.This kind of design is imitative natural tooth root, can implant immediately at site of extractions, reduces bone lesion during standby nest, can also improve the primary stability after implantation.
More firm in order to lock, researcher is arranged linkage section 102 and is connected by Morse's taper self-locking with implant 103.Linkage section is connected by Morse's taper with implant, is by after linkage section Shi Hanzhang, utilizes static friction principle to obtain enough frictional force, thus reach " cold welding " effect.Enough contact lengths (area) effectively can transmit the moment of torsion that bears when tooth implant is implanted, and make to chew stress and be uniformly distributed along whole contact surface, effectively prevent tooth implant shoulder stress from concentrating.Utilize the connected mode of Morse's taper self-locking, connect more firm.
In addition, linkage section 102 can also arrange outer six side's projections 109, arranges six side's grooves in coupling in implant 103 inside.Linkage section 102 and implant 103 can be located by outer six side's projections 109, interior six side's grooves again.Linkage section 102 and implant 103 are connected by Morse's taper and obtain enough adhesions, and the Main Function of outer six side's projections 109, interior six side's grooves is exactly the rotation preventing base station further---especially during use angle base station.
In the present embodiment, one end of linkage section 102 is connected with base station 101, and in other end partial insertion implant 103, that end inserting implant 103 is just locked by 8 degree of Morse's tapers, and outer six side's projections 109 are just arranged on the position near end.In addition, that end of the insertion implant 103 of linkage section 102 is connected with implant 103 by central screw 107 again, is connected by central screw 107, easy to connect.Certainly, this kind is selected, not as restriction, other junctional complex also can be selected to connect, as pin.
In the present embodiment, base station 101 and linkage section 102 are formed in one, and namely base station 101 and linkage section 102 are an entirety, and whole tooth implant is mainly divided into three parts---and base station 101 and linkage section 102 are a part, central screw 107 is a part, and implant 103 is a part.Base station 101 and linkage section 102 define entirety, are just fixed by central screw 107 between this entirety and implant 103.Certainly, base station 101 and linkage section 102 also can be set to two parts separately, are connected by fixing mode or dismountable mode.
To sum up, whole tooth implant can be regarded as two parts, linkage section 102 and base station 101 one-body molded, be upper part, implant 103 is lower part, and central screw 107 is the connector connecting upper part and lower part.For convenience of explanation and distinguish, an overall upper part can be carried out following vision fractionation, that is: upper part includes base station 101 and linkage section 102, linkage section 102 includes base station cervical region, connecting portion, six side's section and tapered sections, base station 101, base station cervical region, connecting portion, six side's sections, tapered section connect successively, base station cervical region is exposed to the outside of implant 103, and connecting portion, six side's sections and tapered section are all arranged at the inside of implant 103.
Central screw 107 is provided with external screw thread, implant 103 is provided with the female thread 108 of coupling, externally threaded intensity is greater than the intensity of female thread 108, the externally threaded number of turns is less than the number of turns of female thread 108, external screw thread all screws in female thread 108, and remains with near the female thread 108 of linkage section 102 screw thread that at least half-turn is in free state.Free state is not namely by the state that external screw thread mates, and the number of turns herein mentioned, and is that a circle of thread segment, is a circle of screw thread with the cross section of central screw 107 and implant 103.Female thread 108 number of turns is more than externally threaded, so the external screw thread of central screw 107 can all screw in the female thread 108 of implant 103 by force, after screwing in completely, not a half circle can also be remained to not by external screw thread coupling, the female thread 108 being still in free state, see Fig. 3.And intensity refers to that the ability of destruction (permanent deformation and fracture) resisted under external force by material.Because external screw thread intensity is greater than female thread 108 intensity, so after applying retention screws in by force, there is micro-deformation in the female thread 108 of implant 103, central screw 107 can be locked in female thread 108, cannot move, this kind of setting can effectively prevent the derotation of central screw 107 from coming off.
In the present embodiment, the female thread 108 near linkage section 102 remains the screw thread that a circle is in free state, and certainly, this kind is selected, not as restriction, also can be set to other the number of turns, as half-turn, three circles.
In order to reduce stress concentration phenomenon, researcher has carried out again the setting at shoulder position: the end of the end of the close base station 101 of implant 103, remain with the plane 110 of the section of not being connected 102 covering (for convenience of explanation, introduce plane 110), the axis of linkage section 102 and the axis of implant 103 are on the same line.That is this kind arranged, and in end, implant 103 remains a circle plane 110, and this plane 110 is not chimeric with linkage section 102, and also the section of being connected 102 does not cover.So, when tooth implant is not implanted, from the appearance, the end (i.e. the shoulder position of implant 103) of that end of close linkage section 102 exposed part of implant 103, just remains with part planar 110; After tooth implant is implanted, body bone tissue or soft tissue growth are recovered, because end remains part planar 110, so can improve the concentrated phenomenon of stress.And when oral cavity tissue growth recovery, linkage section 102 will form biological sealing with gingiva tissue, avoid oral cavity bacterium to invade implant 103, also just block the intrusion of antibacterial between implant 103 and alveolar bone.Simultaneously, also just because of the plane 110 of " having more a circle " of arranging, so oral cavity tissue can insert the space between this plane 110 and linkage section 102 in recovery process, thus tooth implant just can form good Integrated implant and biological sealing with oral cavity tissue, improve the stability of tooth implant initial planting, ensure that the long-term effect after tooth implant implantation, practicality is high.
The design of this plane 110 (the shoulder position of implant 103), can effectively prevent tooth implant surrounding bone from absorbing, and is mainly reflected in following 3 points:
1. rebuild biological width.At the horizontal zone that implant 103 shoulder position has the section of not being connected 102 to cover, connective tissue adheres at this, restriction soft tissue moves to root side, biological width reconstruction is horizontal direction from vertical direction portions turn, thus decreases the Marginal bone resorption caused for obtaining Vertical dimension biological width;
2. the change of stress distribution.Jaw power can better be transmitted and improve osseous tissue biomechanics reaction;
3. move in microgap, implant 103-linkage section 102 interface.Define conical ring sealing, reduce the impact of bacterial accumulation edge bone, reduce the impact of the fine motion edge bone at microgap place;
4. form soft tissue cuff.Formed to be sealed with biology and be beneficial to the intrusion of opposing external microbe.
The axis of linkage section 102 and the axis setting on the same line of implant 103, make the plane 110 at implant 103 shoulder place be left a circle, and when oral cavity tissue growth recovery, this circle plane 110 can be covered by oral cavity tissue uniformly.
In addition, consider the position difference of body bone tissue, on the implant 103 that researcher is arranged, often enclose the angle corresponding away from the tooth side of base station 101 of screw thread be first jiao 111 (for convenience of explanation, introduce first jiao 111), the angle that often the tooth side of the close base station 101 of circle screw thread is corresponding is second jiao 112 (for convenience of explanation, introducing second jiao 112), and first jiao 111 is greater than second jiao 112.See Fig. 4, under angle corresponding to tooth side be away from angle corresponding to the tooth side of base station 101, namely first jiao 111, be near angle corresponding to the tooth side of base station 101 at the angle that upper tooth side is corresponding, namely second jiao 112 (this corresponding relation is as in triangle, large limit is to big angle, and little limit is to the relation at little angle).What distribute around root of the tooth depths is spongy bone, and what distribute around the shallow place of root of the tooth is cortical bone, and the bone density of spongy bone is lower than cortical bone.When tooth implant is implanted, because first jiao 111 that often encloses screw thread is greater than second jiao 112, this asymmetric gradual screw thread can meet the density of different parts osseous tissue, and all screw threads all can be held locking surrounding oral tissue, avoids loosening of tooth implant.Simultaneously also can effectively disperse to chew stress, make it change normal pressure on interface into, the actual bonded area increasing implant 103 and bone can be maximized, reduce the shear stress on surface, optimum biting load pressure transmit, and threaded tip stress concentrate also reduce, stimulation of bone growth.
Generally speaking, the upper part of the tooth implant that the present embodiment provides (base station 101 with linkage section 102 integrated this part) is be connected by central screw 107 with implant 103, upper part has been stretched at the two ends of central screw 107 respectively and implant 103 is inner, makes the two realize from inside connecting.The upper part of tooth implant of the prior art is just fixed on the surface of implant, its shoulder position mainly through tooth implant meets with stresses, so the shoulder position stress concentration phenomenon of implant is just more serious, and the upper part of the tooth implant that the present embodiment provides and implant 103 just achieve connection from inside, be not restricted to the surface of implant 103, so bear chew stress time, can coordinating along linkage section 102 and implant 103, also just spread by whole inside, meet with stresses with whole tooth implant, so, just reduce the stress suffered by tooth implant shoulder position, effectively improve stress concentration phenomenon.And the asymmetric progressive design of the tapering of implant 103 and screw thread makes stress equilibrium distribute further
The outstanding advantage of the tooth implant that the present embodiment provides is mainly reflected in following 3 points:
1. material system; As long as meet the material of Srgery grafting instructions for use, all can as the material system of tooth implant, and the material system that the preferred pure titanium of the tooth implant that the present embodiment provides is combined with titanium alloy, titanium alloy selected by central screw 107, implant 103 selects pure titanium, and so, the external screw thread being conducive to central screw 107 screws in the female thread 108 of implant 103 by force, reach micro-deformation locking, the effect of anti-derotation.
2. morphosis; The structural designs such as the micro-deformation locking of the anti-spin slot 106 of the tooth implant that the present embodiment provides, internal and external threads, shoulder platform (retaining plane 110), asymmetric gradual screw thread, the connection design of each several part and global design, not only in order to reach visual effect attractive in appearance, and the design of everywhere is all striven for better meeting biomechanics requirement.
3. surface treatment; The tooth implant that the present embodiment provides also have passed through good surface treatment, implant 103 surface roughness is made to reach 2.5 μm, bulky grain media grit blast forms roughness, the fine structure on surface is increased after acid etching, be conducive to the contact of skeletonization relevant cell, seek connections with, assemble and grow, and then release relevant growth factors, promote knitting.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a tooth implant, it is characterized in that: comprise base station, linkage section and implant, the two ends of described linkage section connect described base station and described implant respectively, one end of the close described base station of described implant is provided with multiple thread, the other end is provided with one start screw, and the outer surface of described implant is provided with the anti-spin slot of multiple tracks in the axial direction.
2. tooth implant according to claim 1, is characterized in that: anti-spin slot described in multiple tracks is all through to multiple thread from the one end at the one start screw place of implant.
3. tooth implant according to claim 1, is characterized in that: described anti-spin slot is three roads.
4. tooth implant according to claim 1, is characterized in that: described linkage section is connected by Morse's taper self-locking with described implant.
5. tooth implant according to claim 1, is characterized in that: described linkage section and described implant are fixed by central screw.
6. tooth implant according to claim 5, it is characterized in that: described central screw is provided with external screw thread, described implant is provided with the female thread of coupling, described externally threaded intensity is greater than the intensity of described female thread, the described externally threaded number of turns is less than the number of turns of described female thread, described external screw thread all screws in described female thread, and remains with near the female thread of described linkage section the screw thread that at least half-turn is in free state.
7. tooth implant according to claim 1, is characterized in that: the end of the end of the close described base station of described implant, remains with not by plane that described linkage section covers.
8. tooth implant according to claim 7, is characterized in that: the axis of described linkage section and the axis of described implant are on the same line.
9. tooth implant according to claim 1, it is characterized in that: on described implant, the angle corresponding away from the tooth side of base station often enclosing screw thread is first jiao, and the angle that often the tooth side of the close base station of circle screw thread is corresponding is second jiao, and described first jiao is greater than described second jiao.
10. tooth implant according to claim 1, is characterized in that: described multiple thread is double thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610013354.9A CN105411697A (en) | 2015-10-23 | 2016-01-11 | Dental implant |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520829786 | 2015-10-23 | ||
| CN2015208297868 | 2015-10-23 | ||
| CN201610013354.9A CN105411697A (en) | 2015-10-23 | 2016-01-11 | Dental implant |
Publications (1)
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| CN201620019081.4U Active CN205339182U (en) | 2015-10-23 | 2016-01-11 | Dental implant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111372532A (en) * | 2017-06-19 | 2020-07-03 | 阿德万有限公司 | Intraosseous dental implant |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105411697A (en) * | 2015-10-23 | 2016-03-23 | 成都普川生物医用材料股份有限公司 | Dental implant |
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| Publication number | Publication date |
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| CN205339182U (en) | 2016-06-29 |
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