CN106109032A - A kind of gradient porous structure tooth implant - Google Patents
A kind of gradient porous structure tooth implant Download PDFInfo
- Publication number
- CN106109032A CN106109032A CN201610481191.7A CN201610481191A CN106109032A CN 106109032 A CN106109032 A CN 106109032A CN 201610481191 A CN201610481191 A CN 201610481191A CN 106109032 A CN106109032 A CN 106109032A
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- China
- Prior art keywords
- core body
- tooth implant
- transition zone
- densification
- porous layer
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Classifications
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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
- A61C8/0012—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 material or composition, e.g. ceramics, surface layer, metal alloy
-
- 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
- A61C8/0012—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 material or composition, e.g. ceramics, surface layer, metal alloy
- A61C8/0013—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 material or composition, e.g. ceramics, surface layer, metal alloy with a surface layer, coating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/02—Inorganic materials
- A61L27/04—Metals or alloys
- A61L27/06—Titanium or titanium alloys
-
- 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
- A61C8/0037—Details of the shape
- A61C2008/0046—Textured surface, e.g. roughness, microstructure
Abstract
The invention discloses a kind of gradient porous structure tooth implant, including densification core body, described densification core body includes columned top core body and the lower core of reverse taper shape being connected with top core body, transition zone and porous layer it is enclosed with the most successively outside described densification core body, the inside structure of described transition zone matches with the outboard structure of densification core body, the profile of transition zone is identical with the profile of densification core body, the inside structure of described porous layer matches with the outboard structure of transition zone, the porosity of described densification core body is not more than 1%, the porosity of transition zone is 1%～5%, the porosity of porous layer is 6%～10%.The tooth implant of the present invention, by arranging densification core body, can ensure that tooth implant has enough intensity, by arranging transition zone and porous layer, can effectively reduce the elastic modelling quantity of tooth implant, thus significantly reduce stress shielding phenomenon.
Description
Technical field
The invention belongs to Oral Repair therapeutic device technical field, be specifically related to a kind of gradient porous structure tooth implant.
Background technology
Anodontia is mankind's commonly encountered diseases and frequently-occurring disease, and according to statistics, the whole world has nearly 2,000,000,000 people to suffer from various odontopathy, and China is lost
Tooth patient is just more than 3.7 hundred million people.Therefore, China has become the gear division reparation of whole world maximum and the latent of replacement therapy medical apparatus and instruments
In market, the tooth implant product good in the urgent need to a large amount of quality, performance is excellent, cost performance is high.Tooth implant is to send out over nearly 10 years
Open up rapidly and may replace the high-end product of tradition method for inserting false teeth, beautiful and comfortable and durable in use.Commercialized product the most
Main employing industrially pure titanium and Ti-6Al-4V alloy are as raw material.As longer-term persistence in human body and need to stably play specific
The apparatus of therapeutic effect, the performance of medical titanium alloy material is good and bad most important to the Clinical practice performance of these implantation instruments,
Even can directly influence medical effect.Although biomedical beta-titanium alloy material has high intensity, high rigidity and the most tough
Property, impact resistance, anti-fatigue performance and the biocompatibility of excellence, but, clinical application research finds in recent years, and titanium and titanium close
Gold does not mates with the elastic modelling quantity of bone, and its hot strength, comprcssive strength and bending strength are all much higher than people bone, are answering masterpiece
Under with, by producing different strains, make load can not be passed to adjacent osseous tissue well by implant, between material and bone
Relative displacement occurs, creates " stress shielding " phenomenon.In the case of this stress, lack the osseous tissue meeting of enough stress stimulations
Degeneration, atrophy occur, is even absorbed, ultimately result in loosening and fracture of implant, it is impossible to meet life-time service requirement.
For medical titanium alloy above shortcomings, the elastic modelling quantity between solution tooth implant and bone does not mate asks
Topic, and strengthen the stability between implantation body and bone, to accelerate Integrated implant, shorten healing time, research worker proposes introduction hole
The method of gap, i.e. prepares porous titanium coating, or is made into the POROUS TITANIUM of Integrate porous on medical titanium alloy surface.But pass
Porous tooth implant prepared by the methods such as the powder metallurgy of system is usually homogeneous microcosmic loose structure, and mechanical property can not expire
Foot oral environment high frequency, high intensity force request.
Summary of the invention
The technical problem to be solved is for above-mentioned the deficiencies in the prior art, it is provided that a kind of gradient porous knot
Structure tooth implant.This tooth implant, by arranging densification core body, can ensure that tooth implant has enough intensity, by arranging
Cross layer and porous layer, can effectively reduce the elastic modelling quantity of tooth implant, thus significantly reduce stress shielding phenomenon.
For solving above-mentioned technical problem, the technical solution used in the present invention is: a kind of gradient porous structure tooth implant, its
Being characterised by, including densification core body, described densification core body includes columned top core body and the back taper being connected with top core body
The lower core of body shape, is enclosed with transition zone and porous layer the most successively outside described densification core body, described transition zone interior
Side structure matches with the outboard structure of densification core body, and the profile of transition zone is identical with the profile of densification core body, described porous layer
Inside structure match with the outboard structure of transition zone, the porosity of described densification core body is not more than 1%, the hole of transition zone
Rate is 1%～5%, and the porosity of porous layer is 6%～10%.
Above-mentioned a kind of gradient porous structure tooth implant, it is characterised in that the upper surface of described densification core body is a diameter of
The 3/5～3/4 of the upper surface diameter of tooth implant.
Above-mentioned a kind of gradient porous structure tooth implant, it is characterised in that the thickness of described transition zone and porous layer
The ratio of thickness is (1～2): 1.
Above-mentioned a kind of gradient porous structure tooth implant, it is characterised in that the material of described tooth implant be pure titanium,
Ti6Al4V titanium alloy or Ti6Al7Nb titanium alloy.
Above-mentioned a kind of gradient porous structure tooth implant, it is characterised in that the porosity of described transition zone is from the inside to the outside
Gradually it is incremented by.
Above-mentioned a kind of gradient porous structure tooth implant, it is characterised in that be provided with external screw thread outside described porous layer.
Above-mentioned a kind of gradient porous structure tooth implant, it is characterised in that described tooth implant uses selective laser to melt
Change manufacturing process, electron beam selective melting manufacturing process or increasing material manufacture method to be prepared from.
The present invention compared with prior art has the advantage that
1, the present invention is by arranging densification core body, can ensure that tooth implant has enough intensity, by arranging transition zone
And porous layer, can effectively reduce the elastic modelling quantity of tooth implant, thus significantly reduce stress shielding phenomenon.
2, the present invention is reasonable in design, and tooth implant is incrementally increased to cylindrical porosity by center, by the ladder of loose structure
Degree change avoids stress to concentrate, and its density, intensity and elastic modelling quantity by reaching the adjustment of porosity and can be replaced
The mechanical property changing osseous tissue matches (biomechanical compatibility), and biomechanics Adapter Property is more preferable.
3, the preferred pure titanium of the tooth implant of the present invention or titanium alloy material, loose structure that porous titanium material is unique and coarse
Surfaces externally and internally be beneficial to osteoblastic adhesion, breed and break up, promote new bone tissue to grow into hole, make the same bone of implant
Between form biological fixation, and ultimately form an entirety, accelerate Integrated implant.
4, existing tooth implant typically requires sequent surface process and forms porous or Micro-v oid on its surface, to improve tooth kind
The osteogenic induction performance of implant, the Micro-v oid on surface of the present invention is not required to secondary operations, shortens the process-cycle, reduces cost,
And there is not the difficult problems such as existing dental implant surface modified coating comes off, safety is more preferable.
5, the tooth implant of the present invention can use the selective laser fusing manufacturing process of routine, electron beam selective melting to shape
Prepared by method or increasing material manufacture method, it is ensured that tooth implant has high machining accuracy and drawing recall factor.
6, the Dental implantion physical ability of the present invention is by adjusting porosity, and the size of densification core body, transition zone and porous layer is to kind
The performances such as implant density, intensity and elastic modelling quantity are adjusted, and use needs with satisfied clinical different parts, it is achieved convenient, and
Can effectively overcome existing titanium alloy tooth implant biomechanical property and the number of drawbacks such as biomechanics Adapter Property is poor and not
Foot, can promote the Integrated implant performance of implantation body simultaneously.
In sum, present configuration is simple, design science is reliable and processing and fabricating is easy, self-bone grafting performance and Integrated implant
Performance is more preferable, and can effectively solve the problems such as existing titanium alloy tooth implant biomechanics Adapter Property is poor.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings and embodiment, technical scheme is described in further detail.
Figure of description
Fig. 1 is the structural representation of gradient porous structure tooth implant of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Description of reference numerals:
1 densification core body；1-1 top core body；1-2 lower core；
2 transition zones；3 porous layers.
Detailed description of the invention
Embodiment 1
As depicted in figs. 1 and 2, the gradient porous structure tooth implant of the present embodiment, material is pure titanium, including densification core body
1, described densification core body 1 includes columned top core body 1-1 and the lower core of reverse taper shape being connected with top core body 1-1
1-2, the 3/5 of the upper surface diameter of a diameter of tooth implant of upper surface of described densification core body 1, described densification core body 1 is outer by interior
Outwards being enclosed with transition zone 2 and porous layer 3 successively, the ratio of the thickness of transition zone 2 and the thickness of porous layer 3 is 1:1, described transition
The layer inside structure of 2 matches with the outboard structure of densification core body 1, and the profile of transition zone 2 is identical with the profile of densification core body 1,
The inside structure of described porous layer 3 matches with the outboard structure of transition zone 2, and the porosity of described densification core body 1 is 0.9%,
The porosity of described transition zone 2 is the most gradually incremented by, and the porosity inside transition zone 2 is 1%, and the porosity in outside is
5%, the porosity of porous layer 3 is 10%, is provided with external screw thread outside described porous layer 3.
The tooth implant of the present embodiment uses conventional laser selective melting manufacturing process to be prepared from.
The tooth implant simple in construction of the present embodiment, design science are reliable and processing and fabricating is easy, self-bone grafting performance and bone
Integration performance is more preferable, and can effectively solve the problems such as existing titanium alloy tooth implant biomechanics Adapter Property is poor.
Embodiment 2
As depicted in figs. 1 and 2, the gradient porous structure tooth implant of the present embodiment, material is Ti6Al4V titanium alloy, bag
Including densification core body 1, described densification core body 1 includes columned top core body 1-1 and the reverse taper shape being connected with top core body 1-1
Lower core 1-2, the 3/4 of the upper surface diameter of a diameter of tooth implant of upper surface of described densification core body 1, described densified core
Body 1 is outer is enclosed with transition zone 2 and porous layer 3 the most successively, and the ratio of the thickness of transition zone 2 and the thickness of porous layer 3 is 2:
1, the inside structure of described transition zone 2 matches with the outboard structure of densification core body 1, the profile of transition zone 2 and densification core body 1
Profile is identical, and the inside structure of described porous layer 3 matches with the outboard structure of transition zone 2, the porosity of described densification core body 1
Being 0.1%, the porosity of described transition zone 2 is the most gradually incremented by, and the porosity inside transition zone 2 is 1%, the hole in outside
Gap rate is 3%, and the porosity of porous layer 3 is 6%, is provided with external screw thread outside described porous layer 3.
The tooth implant of the present embodiment uses conventional laser selective melting manufacturing process to be prepared from.
The tooth implant simple in construction of the present embodiment, design science are reliable and processing and fabricating is easy, self-bone grafting performance and bone
Integration performance is more preferable, and can effectively solve the problems such as existing titanium alloy tooth implant biomechanics Adapter Property is poor.
Embodiment 3
As depicted in figs. 1 and 2, the gradient porous structure tooth implant of the present embodiment, material is Ti6Al7Nb titanium alloy, bag
Including densification core body 1, described densification core body 1 includes columned top core body 1-1 and the reverse taper shape being connected with top core body 1-1
Lower core 1-2, the 3/5 of the upper surface diameter of a diameter of tooth implant of upper surface of described densification core body 1, described densified core
Body 1 is outer is enclosed with transition zone 2 and porous layer 3 the most successively, and the ratio of the thickness of transition zone 2 and the thickness of porous layer 3 is 1:
1, the inside structure of described transition zone 2 matches with the outboard structure of densification core body 1, the profile of transition zone 2 and densification core body 1
Profile is identical, and the inside structure of described porous layer 3 matches with the outboard structure of transition zone 2, the porosity of described densification core body 1
Being 0.1%, the porosity of described transition zone 2 is the most gradually incremented by, and the porosity inside transition zone 2 is 1%, the hole in outside
Gap rate is 2%, and the porosity of porous layer 3 is 6%, is provided with external screw thread outside described porous layer 3.
The tooth implant of the present embodiment uses routine to increase material manufacture method and is prepared from.
The tooth implant simple in construction of the present embodiment, design science are reliable and processing and fabricating is easy, self-bone grafting performance and bone
Integration performance is more preferable, and can effectively solve the problems such as existing titanium alloy tooth implant biomechanics Adapter Property is poor.
Embodiment 4
As depicted in figs. 1 and 2, the gradient porous structure tooth implant of the present embodiment, material is Ti6Al7Nb titanium alloy, bag
Including densification core body 1, described densification core body 1 includes columned top core body 1-1 and the reverse taper shape being connected with top core body 1-1
Lower core 1-2, the 7/10 of the upper surface diameter of a diameter of tooth implant of upper surface of described densification core body 1, described densification
Core body 1 is outer is enclosed with transition zone 2 and porous layer 3 the most successively, and the ratio of the thickness of transition zone 2 and the thickness of porous layer 3 is
1.5:1, the inside structure of described transition zone 2 matches with the outboard structure of densification core body 1, the profile of transition zone 2 and densified core
The profile of body 1 is identical, and the inside structure of described porous layer 3 matches with the outboard structure of transition zone 2, described densification core body 1
Porosity is 0.1%, and the porosity of described transition zone 2 is the most gradually incremented by, and the porosity inside transition zone 2 is 1%, outward
The porosity of side is 4%, and the porosity of porous layer 3 is 6%, is provided with external screw thread outside described porous layer 3.
The tooth implant of the present embodiment uses conventional electron beam selective melting manufacturing process to be prepared from.
The tooth implant simple in construction of the present embodiment, design science are reliable and processing and fabricating is easy, self-bone grafting performance and bone
Integration performance is more preferable, and can effectively solve the problems such as existing titanium alloy tooth implant biomechanics Adapter Property is poor.
The above, be only presently preferred embodiments of the present invention, and the present invention not does any restriction, every according to invention skill
Any simple modification, change and the equivalent structure change that above example is made by art essence, all still falls within the technology of the present invention
In the protection domain of scheme.
Claims (7)
1. a gradient porous structure tooth implant, it is characterised in that include that densification core body, described densification core body (1) include circle
The top core body (1-1) of column and the lower core (1-2) of reverse taper shape being connected with top core body (1-1), described densified core
Body (1) is enclosed with transition zone (2) and porous layer (3), the inside structure of described transition zone (2) and densified core the most successively
The outboard structure of body (1) matches, and the profile of transition zone (2) is identical with the profile of densification core body (1), described porous layer (3)
Inside structure matches with the outboard structure of transition zone (2), and the porosity of described densification core body (1) is not more than 1%, transition zone
(2) porosity is 1%～5%, and the porosity of porous layer (3) is 6%～10%.
A kind of gradient porous structure tooth implant the most according to claim 1, it is characterised in that described densification core body (1)
The a diameter of tooth implant of upper surface upper surface diameter 3/5～3/4.
A kind of gradient porous structure tooth implant the most according to claim 1, it is characterised in that described transition zone (2)
The ratio of the thickness of thickness and porous layer (3) is (1～2): 1.
A kind of gradient porous structure tooth implant the most according to claim 1, it is characterised in that the material of described tooth implant
Matter is pure titanium, Ti6Al4V titanium alloy or Ti6Al7Nb titanium alloy.
A kind of gradient porous structure tooth implant the most according to claim 1, it is characterised in that described transition zone (2)
Porosity is the most gradually incremented by.
A kind of gradient porous structure tooth implant the most according to claim 1, it is characterised in that described porous layer (3) is outward
Side is provided with external screw thread.
A kind of gradient porous structure tooth implant the most according to claim 1, it is characterised in that described tooth implant uses
Selective laser fusing manufacturing process, electron beam selective melting manufacturing process or increasing material manufacture method are prepared from.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610481191.7A CN106109032A (en) | 2016-06-27 | 2016-06-27 | A kind of gradient porous structure tooth implant |
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| CN201610481191.7A CN106109032A (en) | 2016-06-27 | 2016-06-27 | A kind of gradient porous structure tooth implant |
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| CN201610481191.7A Pending CN106109032A (en) | 2016-06-27 | 2016-06-27 | A kind of gradient porous structure tooth implant |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106580494A (en) * | 2016-12-15 | 2017-04-26 | 宁波创导三维医疗科技有限公司 | Segmented porous implant and design and manufacturing method thereof |
| CN107374760A (en) * | 2017-07-24 | 2017-11-24 | 芜湖微云机器人有限公司 | A kind of gradient porous planting body with medicine carrying function |
| CN108926399A (en) * | 2018-07-10 | 2018-12-04 | 上海交通大学 | Metal 3D printing prepares functionally gradient dental implant method |
| CN109180182A (en) * | 2018-08-28 | 2019-01-11 | 西安交通大学 | A kind of zirconium oxide artificial tooth and its photocuring dynamic molding method with gradient mechanical property |
| WO2019104852A1 (en) * | 2017-12-01 | 2019-06-06 | 广州市健齿生物科技有限公司 | Porous dental implant having surface inlaid with degradable layer and preparation method therefor |
| CN109938854A (en) * | 2019-04-03 | 2019-06-28 | 西安交通大学 | A kind of bionical implantation material, artificial tooth root and preparation method thereof |
| CN110393610A (en) * | 2019-05-15 | 2019-11-01 | 上海大学 | Three layers of compound bone implant prosthese of one kind and preparation method thereof |
| CN111227965A (en) * | 2020-01-17 | 2020-06-05 | 北京大学口腔医学院 | Design and manufacturing method of surface structure of artificial periodontal ligament dental implant |
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| CN106580494A (en) * | 2016-12-15 | 2017-04-26 | 宁波创导三维医疗科技有限公司 | Segmented porous implant and design and manufacturing method thereof |
| CN107374760A (en) * | 2017-07-24 | 2017-11-24 | 芜湖微云机器人有限公司 | A kind of gradient porous planting body with medicine carrying function |
| WO2019104852A1 (en) * | 2017-12-01 | 2019-06-06 | 广州市健齿生物科技有限公司 | Porous dental implant having surface inlaid with degradable layer and preparation method therefor |
| CN108926399A (en) * | 2018-07-10 | 2018-12-04 | 上海交通大学 | Metal 3D printing prepares functionally gradient dental implant method |
| CN109180182A (en) * | 2018-08-28 | 2019-01-11 | 西安交通大学 | A kind of zirconium oxide artificial tooth and its photocuring dynamic molding method with gradient mechanical property |
| CN109180182B (en) * | 2018-08-28 | 2020-08-18 | 西安交通大学 | Zirconia false tooth with gradient mechanical property and photocuring dynamic forming method thereof |
| CN109938854A (en) * | 2019-04-03 | 2019-06-28 | 西安交通大学 | A kind of bionical implantation material, artificial tooth root and preparation method thereof |
| CN110393610A (en) * | 2019-05-15 | 2019-11-01 | 上海大学 | Three layers of compound bone implant prosthese of one kind and preparation method thereof |
| CN110393610B (en) * | 2019-05-15 | 2021-08-10 | 上海大学 | Three-layer composite bone implant prosthesis and preparation method thereof |
| CN111227965A (en) * | 2020-01-17 | 2020-06-05 | 北京大学口腔医学院 | Design and manufacturing method of surface structure of artificial periodontal ligament dental implant |
| CN111227965B (en) * | 2020-01-17 | 2022-03-01 | 北京大学口腔医学院 | Design and manufacturing method of surface structure of artificial periodontal ligament dental implant |
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Application publication date: 20161116 |