CN103919618A - Oral cavity implant with fin - Google Patents
Oral cavity implant with fin Download PDFInfo
- Publication number
- CN103919618A CN103919618A CN201410155862.1A CN201410155862A CN103919618A CN 103919618 A CN103919618 A CN 103919618A CN 201410155862 A CN201410155862 A CN 201410155862A CN 103919618 A CN103919618 A CN 103919618A
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- wing
- implant
- fin
- implantation body
- implantation
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- 239000007943 implant Substances 0.000 title claims abstract description 40
- 210000000214 mouth Anatomy 0.000 title abstract description 13
- 230000001788 irregular Effects 0.000 claims abstract description 5
- 239000007769 metal material Substances 0.000 claims abstract description 3
- 238000002513 implantation Methods 0.000 claims description 106
- 238000013461 design Methods 0.000 claims description 38
- 239000000463 material Substances 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 210000000988 bone and bone Anatomy 0.000 abstract description 29
- 238000000034 method Methods 0.000 abstract description 9
- 238000012545 processing Methods 0.000 abstract description 6
- 208000015181 infectious disease Diseases 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 230000014759 maintenance of location Effects 0.000 abstract description 2
- 239000000919 ceramic Substances 0.000 abstract 1
- 230000001055 chewing effect Effects 0.000 abstract 1
- 238000010079 rubber tapping Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 8
- 230000010478 bone regeneration Effects 0.000 description 7
- 208000006389 Peri-Implantitis Diseases 0.000 description 5
- 210000002698 mandibular nerve Anatomy 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 210000004872 soft tissue Anatomy 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000011218 segmentation Effects 0.000 description 3
- 238000011960 computer-aided design Methods 0.000 description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical group C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- 206010064687 Device related infection Diseases 0.000 description 1
- 206010061218 Inflammation Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004054 inflammatory process Effects 0.000 description 1
- 238000002595 magnetic resonance imaging Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
Landscapes
- Dental Prosthetics (AREA)
- Prostheses (AREA)
Abstract
The invention relates to an oral cavity implant with a fin and belongs to the technical field of oral cavity medical appliances. The surface of jawbone at the upper end of the implant is provided with a fin, the fin can be in a disc shape or an irregular shape and is used for covering the surface of the jawbone at the periphery of the implant. The implant can be processed into a personalized implant according to the actual conditions of a patient, and the surface is smooth; the implant can be produced in batches through conventional mechanical cutting and processing, and the surface of the implant produced in batches can be smooth or threaded; the implant can be made of a ceramic or metal material; the implant can be of one-section type and two-section type; the surface of the implant can be modified by various methods so as to improve biocompatibility. The oral cavity implant with the fin has the characteristics that the indication of the implant is effectively improved, the contact area between the implant and bone is increased, the support strength in long term is improved, more chewing pressure can be resisted, the retention of the implant can be effectively improved, and the infection around the implant can be effectively prevented.
Description
Technical field
The invention belongs to oral cavity medical apparatus technical field, relate to tooth implant.
Background technology
Since nineteen sixty-five Branemark take the lead in pure-titanium tooth implantation to be applied to clinical since, development along with material and medical skill, the application of tooth-planting is more and more extensive, but in actual application, also usually run into patient bone quantity not sufficient (height and thickness), implant retention is bad and the problem such as bone regeneration around implant infection.
In recent years, the progress of digital medical technology, for the development of prosthetic dentistry provides a new approach.Utilize digitizing technique to carry out three dimensional design and the making of corona and prosthesis, and become one of important development direction of tooth and Maxillofacial defect prosthodontics.Particularly computer-aided design/area of computer aided processing (CAD/CAM) has been widely used in the making of oral cavity zirconium oxide prosthesis in recent years.But for dentistry implant, the commodity of the finished product of applying at present, not yet occurring being in the world similar to commercialization dental CAD/CAM system like that can be for implantation body's product of concrete patient's personalization.
Summary of the invention
The present invention seeks to the with Yi implantation body designing for situations such as current mouth cavity planting body Malretention, peri-implantitis and some patients were jaw bones quantity not sufficients, this wing is for the surface of jawbone around covers implants, increase the contact area of implantation body and bone, the maintenance and the holding strength that increase implantation body, effectively prevent the generation of bone regeneration around implant inflammation.And the indication of implantation body can, according to patient's practical situation design, can effectively improve in personalized with Yi implantation body.It is discoid or irregularly shaped that this wing can become, for the surface of jawbone around covers implants.
For achieving the above object, the technical solution used in the present invention is as follows.
A kind of mouth cavity planting body with fin of the present invention, is characterized in that, the periphery of the body of implantation body (1) in jawbone surface is provided with fin (2).The body of fin and implantation body (1) is integrated, fin (2) is called the length of fin (2) from the outward extending length in the surface of the body (1) of implantation body laminating jawbone surface, fin is the attenuation gradually of the outside thickness of fin root from the body (1) of implantation body; Preferably the fin (2) of body (1) surrounding of implantation body is a whole continuous closure flaps, as discoid.
The length of the wing can be according to patient's practical situation design 1.0-5.0mm, the junction 0.5-2.0mm of the thickness of the wing and implantation body, and being extended to edge is bladed.The surface of implantation body is smooth type and screw-type.
Mouth cavity planting body described above can be with the personalized implantation body of the wing or with the non-personalized implantation body of the wing.
Wherein (1) is with the personalized implantation body of the wing: this implantation body can utilize computer-aided design/area of computer aided processing (CAD/CAM) system, also can utilize the technology such as laser sintered technology or 3-D printing, need Applied Digital technology to carry out three-dimensional data scanning, the three dimensional design of implantation body's body and the digital control processing of implantation body.First, for the scanning of oral cavity jawbone three-dimensional data, be mainly to adopt layer scanning technology, comprise CT, MRI scanning technique.Utilize different physical principles successively to scan the two dimensional image that testee obtains many levels, the complete information that these images have comprised each cross section profile and internal feature thereof, then by the threedimensional model of three-dimensional reconstruction software acquisition complete object.Then, utilize digitizing technique can accurately design and meet the suitable diameter of patient's practical situation and the implantation body of length according to the three-dimensional configuration of patient's jawbone, and according to the situation on patient's jawbone surface design close with jawbone surface and the wing, finally make implantation body reach closely sealed maintenance.Finally, by technology such as machining, laser sintered technology or 3-D printings, prepare the personalized with Yi implantation body that meets patient's practical situation.Because the wing of this implantation body and the contact surface of jawbone are irregular shape, good with jawbone surface fitness, be difficult for rotating positioning, the surface design of implantation body is smooth type.The wing of personalized implantation body and jawbone contact surface are according to the form Design on jawbone surface, with jawbone surface close and, the length of the wing can be according to patient's practical situation design 1.0-5.0mm, and the junction 0.5-2.0mm of the thickness of the wing and implantation body is extended to the bladed of edge.
(2) with the non-personalized implantation body of the wing: the design of this wing is produced in batch with conventional mechanical cutting processing.The contact surface of the wing and jawbone is regular shape, can rotating positioning, but finally in placely need to carry out suitable finishing to the jawbone surface below the wing, so implant surface can be smooth type and screw-type.The face of the wing of non-personalized implantation body and jawbone contact surface 0-45 degree, the length of the wing can design 1.0-5.0mm, and the junction 0.5-2.0mm of the thickness of the wing and implantation body is extended to the bladed of edge.
With Yi implantation body material can be pottery or metal material.
With Yi implantation body can be one-part form or two-part; Described one-part form for band fin (2) implantation body body (1) with wear gum portion (4), abutment portion (5) is integrated; Described two-part is what to separate for being with the body (1) of the implantation body of fin (2) with wearing between gum portion (4).
With wing implant surface can be passed through the whole bag of tricks modification, to improve its biocompatibility.
The mouth cavity planting body of the band wing of the present invention can effectively improve the indication of implantation body, increased the bonded area of implantation body and bone, improved the early holding strength in long term, resisted larger masticatory pressure, can effectively increase the maintenance of implantation body and can effectively prevent the infection of bone regeneration around implant.This implantation body can utilize digitizing technique, design personalized with Yi implantation body more can be applicable to patient's practical situation, avoid bone quantity not sufficient because of patient (height and thickness) to need bone grafting the situation such as maybe cannot plant, can further improve the success rate of implantation body; Also can also can conventional mechanical cutting processing produce in batch.The invention provides a kind of novel mouth cavity planting body.
Accompanying drawing explanation
Fig. 1 is personalized implantation body schematic diagram, and a is two sections of segmentations, and b is one-part form.
Fig. 2 is non-personalized implantation body schematic diagram, and a is two sections of segmentations, and b is one-part form.
Fig. 3 is the schematic diagram that the personalized implantation body of the with wing implants after repairing;
Fig. 4 is the schematic diagram that the non-personalized implantation body of the with wing implants after repairing;
The body of 1 implantation body, 2 fins, 3 self tapping grooves, 4 are worn gum portion, 5 abutment portion, 6 complete crowns, 7 inferior alveolar nerve pipes.
The specific embodiment
Be below specific embodiments of the invention, but be not limited to specific embodiment, be now described further by reference to the accompanying drawings.
Embodiment 1
Fig. 1 is personalized implantation body schematic diagram, and Fig. 3 is the schematic diagram that the personalized implantation body of the with wing implants after repairing, and material is zirconium oxide, and CAD/CAM makes, and because of patient's bone quantity not sufficient, carries out personalized designs.
Fig. 3 a is the personalized Liang Duan segmentation of with wing implantation body, and implantation body 1 is smooth cylinder design, facilitates in placely, and its outer circumference diameter is 3.5mm, and length is 7.5mm, has made up the defect that the agomphosis patient of traditional frontal resorption can not plant.The length of the wing 2 designs about 1.5-2.0mm according to patient's practical situation, and the junction 1.0mm of the thickness of the wing and implantation body is extended to the bladed of edge, is shaped as irregular.The design of the wing has increased the contact area of implantation body and jawbone, and the pressure at right angle that can disperse better implantation body to bear has increased the bone internal stability of implantation body.The passage of microorganism intrusion bone regeneration around implant has been cut off in the design of the wing, can effectively prevent the generation of peri-implantitis.Self tapping groove 3 not only has cutting bone wall tapping and bone squeezing action voluntarily, there is a guiding function the implantation of operation process Zhong Dui implantation body is in place, convenient implantation, bone can form locking action after growing into simultaneously, strengthen synosteosis, the personalized implantation body of the with wing can rotating positioning at the initial stage in place, is pressed in place when the wing contacts with alveolar bone.Wearing gum portion 4 is connected with 1 by central screw, height is 2.0mm according to the Thickness Design of patient's soft tissue, above be fixedly connected with by interior with abutment portion 5, abutment portion 5 is taper, tapering 5 degree, form rational path of insertion to facilitate corona in place, there are a groove and tangent plane design in cone surface, facilitates tool wrench to be screwed into, and can prevent again corona rotation.Then making complete crown 6 repairs.7 is inferior alveolar nerve pipe, during implant operation, should dodge.
Fig. 3 b is the personalized implantation body of the one-part form with wing, and implantation body 1 is smooth cylinder design, facilitates in placely, and its outer circumference diameter is 3.0mm, and length is 7.0mm, has made up the defect that the agomphosis patient of traditional frontal resorption can not plant.The length of the wing 2 designs about 1.5-2.0mm according to patient's practical situation, and the junction 1.0mm of the thickness of the wing and implantation body is extended to the bladed of edge, is shaped as irregular.The design of the wing has increased the contact area of implantation body and jawbone, and the pressure at right angle that can disperse better implantation body to bear has increased the bone internal stability of implantation body.The passage of microorganism intrusion bone regeneration around implant has been cut off in the design of the wing, can effectively prevent the generation of peri-implantitis.Self tapping groove 3 not only has cutting bone wall tapping and bone squeezing action voluntarily, there is a guiding function the implantation of operation process Zhong Dui implantation body is in place, convenient implantation, bone can form locking action after growing into simultaneously, strengthen synosteosis, the personalized implantation body of the with wing can rotating positioning at the initial stage in place, is pressed in place when the wing contacts with alveolar bone.Wearing gum portion 4, abutment portion 5 and implantation body 1 is structure as a whole, the height of wearing gum portion 4 is 2.0mm according to the Thickness Design of patient's soft tissue, abutment portion 5 is taper, tapering 5 degree, form rational path of insertion to facilitate corona in place, there are a groove and tangent plane design in cone surface, facilitate tool wrench to be screwed into, can prevent again corona rotation.Then making complete crown 6 repairs.7 is inferior alveolar nerve pipe, during implant operation, should dodge.
Embodiment 2
Fig. 2 is non-personalized implantation body schematic diagram, and Fig. 4 is the schematic diagram that the non-personalized implantation body of the with wing implants after repairing.Material is titanium alloy, machining standardization preparation.
Fig. 4 a is non-personalized two-part implantation body, and implantation body 1 is helical design, and spiral shell parameter is pitch 1.5mm, tooth depth 0.5mm, and working edge β=40 degree, β=5, inoperative limit degree, angle of thread α=45 degree, its outer circumference diameter is 5.0mm, length is 12.0mm.The length of the wing 2 is according to patient's practical situation design 1.5mm, and the junction 1.0mm of the thickness of the wing and implantation body is extended to the bladed of edge, is shaped as regular circle.The design of the wing has increased the contact area of implantation body and jawbone, and the pressure at right angle that can disperse better implantation body to bear has increased the bone internal stability of implantation body.The passage of microorganism intrusion bone regeneration around implant has been cut off in the design of the wing, can effectively prevent the generation of peri-implantitis.Self tapping groove 3 not only has cutting bone wall tapping and bone squeezing action voluntarily, there is a guiding function the implantation of operation process Zhong Dui implantation body is in place, convenient implantation, bone can form locking action after growing into simultaneously, strengthen synosteosis, the non-personalized implantation body of the with wing can rotating positioning, but must to the wing below the alveolar bone of contact position carry out regularization finishing, with keep below the wing close with alveolar bone surface and.Wearing gum portion 4 is connected with 1 by central screw, height is 2.5mm according to the Thickness Design of patient's soft tissue, above be fixedly connected with by interior with abutment portion 5, abutment portion 5 is taper, tapering 5 degree, form rational path of insertion to facilitate corona in place, there are a groove and tangent plane design in cone surface, facilitates tool wrench to be screwed into, and can prevent again corona rotation.Then making complete crown 6 repairs.7 is inferior alveolar nerve pipe, during implant operation, should dodge.
Fig. 4 b is non-personalized one-part form implantation body body, and implantation body 1 is helical design, and spiral shell parameter is pitch 1.5mm, tooth depth 0.5mm, and working edge β=40 degree, β=5, inoperative limit degree, angle of thread α=45 degree, its outer circumference diameter is 5.0mm, length is 12.0mm.The length of the wing 2 is according to patient's practical situation design 1.5mm, and the junction 1.0mm of the thickness of the wing and implantation body is extended to the bladed of edge, is shaped as regular circle.The design of the wing has increased the contact area of implantation body and jawbone, and the pressure at right angle that can disperse better implantation body to bear has increased the bone internal stability of implantation body.The passage of microorganism intrusion bone regeneration around implant has been cut off in the design of the wing, can effectively prevent the generation of peri-implantitis.Self tapping groove 3 not only has cutting bone wall tapping and bone squeezing action voluntarily, there is a guiding function the implantation of operation process Zhong Dui implantation body is in place, convenient implantation, bone can form locking action after growing into simultaneously, strengthen synosteosis, the non-personalized implantation body of the with wing can rotating positioning, but must to the wing below the alveolar bone of contact position carry out regularization finishing, with keep below the wing close with alveolar bone surface and.Wearing gum portion 4, abutment portion 5 and implantation body 1 is structure as a whole, wearing gum portion 4 height is 2.5mm according to the Thickness Design of patient's soft tissue, abutment portion 5 is taper, tapering 5 degree, form rational path of insertion to facilitate corona in place, there are a groove and tangent plane design in cone surface, facilitate tool wrench to be screwed into, can prevent again corona rotation.Then making complete crown 6 repairs.7 is inferior alveolar nerve pipe, during implant operation, should dodge.
Claims (10)
1. with a mouth cavity planting body for fin, it is characterized in that, the periphery of the body of implantation body (1) in jawbone surface is provided with fin (2).
2. according to a kind of mouth cavity planting body with the wing of claim 1, it is characterized in that, the body of fin and implantation body (1) is integrated, and fin is the attenuation gradually of the outside thickness of fin root from the body (1) of implantation body.
3. according to a kind of mouth cavity planting body with the wing of claim 1, it is characterized in that, the fin (2) of the body of implantation body (1) surrounding is a whole continuous closure flaps.
4. according to a kind of mouth cavity planting body with the wing of claim 1, it is characterized in that, fin (2) is called the length of fin (2) from the outward extending length in the surface of the body (1) of implantation body laminating jawbone surface, the length of the wing can be according to patient's practical situation design 1.0-5.0mm.
5. according to a kind of mouth cavity planting body with the wing of claim 2, it is characterized in that, the junction 0.5-2.0mm of the thickness of the wing and implantation body, being extended to edge is bladed.
6. according to a kind of mouth cavity planting body with the wing of claim 1, it is characterized in that, the surface of implantation body is smooth type and screw-type.
7. according to a kind of mouth cavity planting body with the wing of claim 1, it is characterized in that, mouth cavity planting body is with the personalized implantation body of the wing or with the non-personalized implantation body of the wing; Wherein with the personalized implantation body of the wing be the surface of the wing and jawbone close and, for rule or irregular shape, be finally difficult for rotating positioning, implant surface is smooth type; The contact surface that is the wing and jawbone with the non-personalized implantation body of the wing is regular shape, finally in placely need to carry out suitable finishing to the jawbone surface below the wing, and implant surface is smooth type or screw-type.
8. according to a kind of mouth cavity planting body with the wing of claim 1, it is characterized in that, with Yi implantation body is one-part form or two-part; Described one-part form for band fin (2) implantation body body (1) with wear gum portion (4), abutment portion (5) is integrated; Described two-part is what to separate for being with the body (1) of the implantation body of fin (2) with wearing between gum portion (4).
9. according to a kind of mouth cavity planting body with the wing of claim 1, it is characterized in that, with wing implant surface is carried out modification, to improve its biocompatibility.
10. according to a kind of mouth cavity planting body with the wing of claim 1, it is characterized in that, with Yi implantation body material can be pottery or metal material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410155862.1A CN103919618B (en) | 2014-04-17 | 2014-04-17 | A kind of mouth cavity planting body of band fin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410155862.1A CN103919618B (en) | 2014-04-17 | 2014-04-17 | A kind of mouth cavity planting body of band fin |
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| Publication Number | Publication Date |
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| CN103919618A true CN103919618A (en) | 2014-07-16 |
| CN103919618B CN103919618B (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410155862.1A Active CN103919618B (en) | 2014-04-17 | 2014-04-17 | A kind of mouth cavity planting body of band fin |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109758244A (en) * | 2019-02-28 | 2019-05-17 | 中国人民解放军第四军医大学 | A kind of mouth cavity planting body system of the anti-dislocation of anti-rotation |
| WO2019109320A1 (en) * | 2017-12-08 | 2019-06-13 | 辰庚事业股份有限公司 | Artificial tooth with vertical bone beam structure |
| CN111012532A (en) * | 2019-12-23 | 2020-04-17 | 北京大学口腔医学院 | Short implant with wing retention structure and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5141435A (en) * | 1990-04-04 | 1992-08-25 | Jonathan Lillard | Endosseous dental implant assembly |
| US5975903A (en) * | 1998-04-02 | 1999-11-02 | Shoher; Edan C. | Dental implant and implant system |
| CN101524294A (en) * | 2008-03-07 | 2009-09-09 | 宝钰生技股份有限公司 | Combined artificial abutment tooth |
| KR20100002142U (en) * | 2008-08-20 | 2010-03-03 | 박숙규 | Maxillary Posterior Implant with Bone Graft |
| KR20100102403A (en) * | 2009-03-11 | 2010-09-24 | 차현인 | An implant using screws for initial stability |
| CN101873837A (en) * | 2007-10-19 | 2010-10-27 | 梁基宾 | Button for implnat healing abutment and implant healing abutment having pressing part |
| CN204092228U (en) * | 2014-04-17 | 2015-01-14 | 首都医科大学附属北京口腔医院 | A kind of mouth cavity planting body with fin |
-
2014
- 2014-04-17 CN CN201410155862.1A patent/CN103919618B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5141435A (en) * | 1990-04-04 | 1992-08-25 | Jonathan Lillard | Endosseous dental implant assembly |
| US5975903A (en) * | 1998-04-02 | 1999-11-02 | Shoher; Edan C. | Dental implant and implant system |
| CN101873837A (en) * | 2007-10-19 | 2010-10-27 | 梁基宾 | Button for implnat healing abutment and implant healing abutment having pressing part |
| CN101524294A (en) * | 2008-03-07 | 2009-09-09 | 宝钰生技股份有限公司 | Combined artificial abutment tooth |
| KR20100002142U (en) * | 2008-08-20 | 2010-03-03 | 박숙규 | Maxillary Posterior Implant with Bone Graft |
| KR20100102403A (en) * | 2009-03-11 | 2010-09-24 | 차현인 | An implant using screws for initial stability |
| CN204092228U (en) * | 2014-04-17 | 2015-01-14 | 首都医科大学附属北京口腔医院 | A kind of mouth cavity planting body with fin |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019109320A1 (en) * | 2017-12-08 | 2019-06-13 | 辰庚事业股份有限公司 | Artificial tooth with vertical bone beam structure |
| CN109758244A (en) * | 2019-02-28 | 2019-05-17 | 中国人民解放军第四军医大学 | A kind of mouth cavity planting body system of the anti-dislocation of anti-rotation |
| CN111012532A (en) * | 2019-12-23 | 2020-04-17 | 北京大学口腔医学院 | Short implant with wing retention structure and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103919618B (en) | 2016-08-31 |
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Effective date of registration: 20230908 Address after: Room 419-Y024, 4th Floor, Building 2, Yard 4, Jinhang West Road, Shunyi District, Beijing, 101300 (Tianzhu Comprehensive Bonded Zone) Patentee after: Huazhi Medical Equipment (Beijing) Co.,Ltd. Address before: 100050 Tiantan Xili 4, Dongcheng District, Beijing Patentee before: BEIJING STOMATOLOGICAL HOSPITAL, CAPITAL MEDICAL University |
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