CN209360946U - A kind of artificial tooth positioning device - Google Patents
A kind of artificial tooth positioning device Download PDFInfo
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- CN209360946U CN209360946U CN201820289345.7U CN201820289345U CN209360946U CN 209360946 U CN209360946 U CN 209360946U CN 201820289345 U CN201820289345 U CN 201820289345U CN 209360946 U CN209360946 U CN 209360946U
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- positioning
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- artificial tooth
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Abstract
The utility model discloses a kind of artificial tooth positioning devices, it is related to manufacture technology field of medical appliance, it solves the upper working model for closing frame process in existing artificial tooth processing technology and is easy dislocation, the technical problems such as difficulty are restored after dislocation, the utility model includes upper jaw facebow, lower jaw facebow, supporting plate, positioning body and positioning column, upper jaw facebow and lower jaw facebow are hinged, supporting plate is set to above lower jaw facebow, supporting plate is fixedly connected with lower jaw facebow, positioning body is set in lower jaw facebow, positioning column is set to splint upper surface, splint upper surface is additionally provided with positioning substrate, positioning substrate includes main part, position portion, main part is set as polygonized structure, position portion is set as T-type structure, main part includes model orientation hole, close frame location hole, chamfering, model orientation hole is set as through-hole, it closes frame location hole and is set as through-hole, Chamfering is symmetrically disposed on model orientation hole two sides.The utility model has the advantages that structurally simple, economical applicable.
Description
Technical field
The utility model relates to manufacture technology field of medical appliance, more particularly to a kind of artificial tooth positioning device.
Background technique
Artificial tooth be exactly it has often been said that " artificial tooth ".Just as " artificial leg ", " artificial limb " are known as " artifucial limb ", the meaning of " artificial tooth "
Think just to refer to the tooth for people's class " obligation " to the greatest extent.It is medically repair latter made to the part or all of absence of tooth of maxillary and mandibular teeth
The general name of complex.Artificial tooth, which is divided into, can pluck and fix two kinds.Fixed denture (being commonly called as " fixed denture ") is cannot to be taken by patient oneself
It wears, and removable denture (being commonly called as " detachable dental prostheses ") can easily be taken by patient and be worn.
The classification of artificial tooth:
1. removable denture: patient can voluntarily pluck the artificial tooth worn, and be suitable for full mouth most tooth missing, remain the few situation of tooth.
Advantage is that patient can take cleaning, it is smaller to remain tooth burden, but that there is also masticatory efficiencies is lower, patient needs to take cleaning after meal
Etc. inconveniences.
2. fixed denture: being supported using the healthy tooth of missing tooth two sides, artificial tooth is fixed in oral cavity, be suitable for minority
Anodontia, interval agomphosis remain the good situation of tooth health status.Advantage is that fixed denture masticatory efficiency is high, and patient, which wears, to be used comfortably,
Foreign body sensation is small, wears without plucking, the disadvantage is that carrying out after abrading part tissue of tooth when repairing to the healthy tooth of missing tooth two sides complete
Hat is repaired.
3. tooth-implanting: the very fast newer technology of development in recent years, method is to be implanted into planting body in alveolar bone, to planting body
It has a denture made after alveolus bon e formation synosteosis, then on planting body, but tooth-implanting requires entire patient in condition, alveolar bone has
Certain height and width.Tooth-implanting uses Comfortable attractive, does not damage adjacent teeth, but price is more expensive.
" removable partial denture " of removable denture, that is, usually said.It, which refers to, utilizes the natural teeth and base remained in oral cavity
The mucous membrane, alveolar bone of (denture fixing device) covering support that patient can voluntarily take the dummy worn." detachable dental prostheses " by artificial tooth maintenance
The part devices such as body and base obtain maintenance and stabilization, and to repair agomphosis and adjacent soft, sclerous tissues, it is one kind of agomphosis
Restorative procedure.The title of " detachable dental prostheses " is inaccurate in fact, not groggy because it still has good maintenance
" activity ", so " can pluck " two words are more accurate.But understand that we still use " detachable dental prostheses " this popular name for convenience of reader
Claim.
Removable partial denture is using the natural teeth remained in mouth as support, using retainer or base maintenance, patient
A kind of dummy worn can voluntarily be taken.It is mainly used for repairing denture and adjacent tissue (alveolar bone) defect, is defect of dentition
One of restorative procedure.Removable partial denture fabrication processing is as follows:
1. making working model；2. modelling；3. frame is closed on；4. making denture；5. row's tooth；6. making wax pattern；
7. mounted box；8. removing wax, filling heat treatment；9. opening box；10. completing artificial tooth.
The upper method closed frame and refer to fixed upper mandibular model jaw relationship.Model is drenched to and modified bottom and edge, is adjusted
Frame screw is fited, is only permitted to close frame work opening and closing movement, and be engaged the upper mandibular body spacing screw of height adjustment simultaneously according to upper mandibular model
It is fixed tight, upper mandibular model and record are fixed together, tune mixes gypsum and model is fixed on conjunction frame.
The auxiliary device for traditionally closing frame is fixed upper mandibular model jaw with frame is closed using plasterboard, to make gnathode
Jaw is fixed with mandibular model jaw occlusal position.But conventional gypsum plate auxiliary device is heavy, inconvenience of taking, during the work time
Gypsum can fall down clast, it is difficult to clear up, be easily deformed, positioning performance is bad.
Utility model content
The purpose of this utility model is that: the utility model provide a kind of working model be not easy to misplace, working model dislocation
Recovery accuracy is high afterwards, artificial tooth positioning device of method of release control simplicity.
The utility model specifically uses following technical scheme to achieve the goals above:
A kind of artificial tooth positioning device, including upper jaw facebow, lower jaw facebow, supporting plate, positioning body and positioning column, the facies maxillaris
Bow is hinged with the lower jaw facebow, and the supporting plate is set to above the lower jaw facebow, and the supporting plate and the lower jaw facebow are solid
Fixed connection, the positioning body are set in lower jaw facebow, and the positioning body is fixedly connected with the lower jaw facebow, the positioning column
It is set to the splint upper surface, the positioning column is fixedly connected with the supporting plate, and the splint upper surface is additionally provided with positioning
Substrate, the positioning substrate are flexibly connected with the supporting plate, and the positioning substrate includes main part, position portion, the master
Body portion is set as polygonized structure, and the position portion is set as T-type structure, and the main part includes model orientation hole,
Frame location hole, chamfering are closed, the model orientation hole is set as through-hole, and the conjunction frame location hole is set as through-hole, the chamfering pair
Title is set to model orientation hole two sides.Keep artificial tooth model orientation precision, repetitive positioning accuracy high by the way that model orientation hole is arranged, allows
Each model in artificial tooth model can also revert to the accuracy of initially upper oral jaw bone biting when closing frame after being separated, mention
The high quality of production, avoid can not resetting and cause artificial tooth model to scrap, improve 80% or more production efficiency, can save
Repeat 90% or more manufacturing cost.The present apparatus is allowed to take when upper use conveniently by the way that chamfering is arranged, it will not be by conjunction frame
Partial component is stopped, and production efficiency 50% can be improved
Further, the model orientation hole is set as conical bore.It is conical bore by setting model orientation hole, allows model
It is high can frequently to dismantle repetitive positioning accuracy by taper bolt and the present apparatus in connection more accurate positioning.Taper bolt has certain
Taper has good self-locking performance, with good, the easy to disassemble advantage of self-locking performance easy for installation.
Further, the material of the main part is set as polymethacrylates.By the material that main part is arranged
Matter be polymethacrylates improve the present apparatus machining property, polymethacrylates is rigidly good, can carry out vehicle,
The machinings such as saw, plane, brill, can reduce by 70% or more the manufacturing cost of the present apparatus for gypsum material.
Further, the material of the position portion is set as polymethacrylates.By the material that position portion is arranged
Matter be polymethacrylates improve the present apparatus machining property, polymethacrylates is rigidly good, can carry out vehicle,
The machinings such as saw, plane, brill, can reduce by 70% or more the manufacturing cost of the present apparatus for gypsum material.
Further, it is additionally provided with substrate location hole on the positioning substrate, the substrate location hole is set as counterbore, institute
Stating counterbore quantity is three.
Further, substrate positioning convex platform is additionally provided on the positioning substrate, the substrate positioning convex platform is wedge shape knot
Structure, the substrate positioning convex platform quantity are six.
Further, the model orientation hole number is no less than two.Model orientation hole number be less than two when model not
It can be fixed.
Further, the conjunction frame positioning hole number is no less than one.Frame positioning hole number is closed to need according to the tool for closing frame
Body situation is determined, when the positioning column for closing frame is that multiple situations needs to be arranged two or more and can be fixed.
Further, the seamed edge of the main part is provided with chamfering.By the way that chamfering is arranged in seamed edge, allow seamed edge will not
The hand of operator is scratched, security performance is improved.
Further, the seamed edge of the position portion is provided with chamfering.By the way that chamfering is arranged in seamed edge, allow seamed edge will not
The hand of operator is scratched, security performance is improved.
Working principle: will position the conjunction frame location hole on substrate and positioning column cooperates, and position the substrate location hole on substrate
It is matched with the positioning pin on supporting plate, to positioning positioning substrate be fixed with conjunction frame, then by the model orientation pin of artificial tooth model
It is inserted into model orientation hole, adjusts after closing frame, by artificial tooth cast trimming to desired size, then by the progress of the tooth of artificial tooth model
Cutting.
The beneficial effects of the utility model are as follows:
1. keep artificial tooth model orientation precision, repetitive positioning accuracy high by the way that model orientation hole is arranged, allow in artificial tooth model
Each model can also revert to the accuracy of initially upper oral jaw bone biting when closing frame after being separated, improve production matter
Amount, avoid can not resetting and cause artificial tooth model to scrap, improve 80% or more production efficiency, can save repetition manufacture at
This 90% or more.
2. allow the present apparatus to take when using on closing frame conveniently by the way that chamfering is arranged, it will not be by the partial component of conjunction frame
Stopped, production efficiency 50% can be improved.
3. being conical bore by setting model orientation hole, make model more smart in connection positioning by taper bolt and the present apparatus
It is high frequently to dismantle repetitive positioning accuracy for standard.Taper bolt has certain taper, has good self-locking performance, has easy for installation
Self-locking performance is good, advantage easy to disassemble.
4. the material by the setting present apparatus is the machining property that polymethacrylates improves the present apparatus, poly- methyl
Acrylate is rigidly good, can carry out the machining such as vehicle, saw, plane, brill, the present apparatus can be reduced for gypsum material
70% or more manufacturing cost.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of artificial tooth positioning device of the utility model.
Fig. 2 is that schematic diagram of substrate structure is positioned in Fig. 1.
Fig. 3 is structural schematic diagram when a kind of artificial tooth positioning device of the utility model does not install positioning substrate.
Fig. 4 is positioning substrate bottom view in Fig. 1.
Fig. 5 is artificial tooth model structure schematic diagram.
Fig. 6 is artificial tooth model and positioning substrate fit structure schematic diagram.
Appended drawing reference: 1- positions substrate, and 2- closes frame location hole, 3- chamfering, 4- main part, 5- position portion, 6- model
Location hole, 7- upper jaw facebow, 8- lower jaw facebow, 9- supporting plate, 10- positioning body, 11- positioning column, 12- substrate location hole, 13- substrate
Positioning convex platform, 14- artificial tooth model, 15- model orientation pin, 16- artificial tooth.
Specific embodiment
In order to which those skilled in the art better understand the utility model, with reference to the accompanying drawing with following embodiment to this
Utility model is described in further detail.
Embodiment 1
Shown in reference to the accompanying drawings, present embodiments provide a kind of artificial tooth positioning device, including upper jaw facebow 7, lower jaw facebow 8,
Supporting plate 9, positioning body 10 and positioning column 11, the upper jaw facebow 7 and the lower jaw facebow 8 are hinged, and the supporting plate 9 is set to described
8 top of lower jaw facebow, the supporting plate 9 are fixedly connected with the lower jaw facebow 8, and the positioning body 10 is set in lower jaw facebow 8,
The positioning body 10 is fixedly connected with the lower jaw facebow 8, and the positioning column 11 is set to 9 upper surface of supporting plate, described fixed
Position column 11 is fixedly connected with the supporting plate 9, and 9 upper surface of supporting plate is additionally provided with positioning substrate 1, the positioning substrate 1 and institute
The flexible connection of supporting plate 9 is stated, the positioning substrate 1 includes main part 4, position portion 5, and the main part 4 is set as polygon
Shape structure, the position portion 5 are set as T-type structure, and the main part 4 includes model orientation hole 6, close frame location hole 2,
Angle 3, the model orientation hole 6 are set as through-hole, and the conjunction frame location hole 2 is set as through-hole, and the chamfering 3 is symmetrically disposed on mould
6 two sides of type location hole.Keep 14 positioning accuracy of artificial tooth model, repetitive positioning accuracy high by the way that model orientation hole 6 is arranged, allows artificial tooth mould
Each model in type 14 can also revert to the accuracy of initially upper oral jaw bone biting when closing frame after being separated, improve
The quality of production, avoid can not resetting and cause artificial tooth model 14 to scrap, improve 80% or more production efficiency, can save weight
Multiple 90% or more manufacturing cost.The present apparatus is allowed to take when upper use conveniently by the way that chamfering is arranged, it will not be by the portion of conjunction frame
Divide component to be stopped, production efficiency 50% can be improved.
The model orientation hole 6 is set as conical bore.It is conical bore by setting model orientation hole 6, model can be passed through
It is high frequently to dismantle repetitive positioning accuracy in connection more accurate positioning for taper bolt and the present apparatus.Taper bolt has certain taper, tool
There is good self-locking performance, with good, the easy to disassemble advantage of self-locking performance easy for installation.
6 quantity of model orientation hole is set as three.Model can not be consolidated when 6 quantity of model orientation hole is less than three
It is fixed.2 quantity of conjunction frame location hole is one.Close frame location hole 2 with positioning column 11 match and can be fixed.
Embodiment 2
Shown in reference to the accompanying drawings, present embodiments provide a kind of artificial tooth positioning device, including upper jaw facebow 7, lower jaw facebow 8,
Supporting plate 9, positioning body 10 and positioning column 11, the upper jaw facebow 7 and the lower jaw facebow 8 are hinged, and the supporting plate 9 is set to described
8 top of lower jaw facebow, the supporting plate 9 are fixedly connected with the lower jaw facebow 8, and the positioning body 10 is set in lower jaw facebow 8,
The positioning body 10 is fixedly connected with the lower jaw facebow 8, and the positioning column 11 is set to 9 upper surface of supporting plate, described fixed
Position column 11 is fixedly connected with the supporting plate 9, and 9 upper surface of supporting plate is additionally provided with positioning substrate 1, the positioning substrate 1 and institute
The flexible connection of supporting plate 9 is stated, the positioning substrate 1 includes main part 4, position portion 5, and the main part 4 is set as polygon
Shape structure, the position portion 5 are set as T-type structure, and the main part 4 includes model orientation hole 6, close frame location hole 2,
Angle 3, the model orientation hole 6 are set as through-hole, and the conjunction frame location hole 2 is set as through-hole, and the chamfering 3 is symmetrically disposed on mould
6 two sides of type location hole.Keep 14 positioning accuracy of artificial tooth model, repetitive positioning accuracy high by the way that model orientation hole 6 is arranged, allows artificial tooth mould
Each model in type 14 can also revert to the accuracy of initially upper oral jaw bone biting when closing frame after being separated, improve
The quality of production, avoid can not resetting and cause artificial tooth model 14 to scrap, improve 80% or more production efficiency, can save weight
Multiple 90% or more manufacturing cost.The present apparatus is allowed to take when upper use conveniently by the way that chamfering is arranged, it will not be by the portion of conjunction frame
Divide component to be stopped, production efficiency 50% can be improved.
The material of the main part 4 is set as polymethacrylates.Material by the way that main part 4 is arranged is poly- first
Base acrylate improves the machining property of the present apparatus, and polymethacrylates is rigidly good, can carry out vehicle, saw, plane, brill etc.
Machining, can reduce by 70% or more the manufacturing cost of the present apparatus for gypsum material.
The material of the position portion 5 is set as polymethacrylates.Material by the way that position portion 5 is arranged is poly- first
Base acrylate improves the machining property of the present apparatus, and polymethacrylates is rigidly good, can carry out vehicle, saw, plane, brill etc.
Machining, can reduce by 70% or more the manufacturing cost of the present apparatus for gypsum material.
Embodiment 3
Shown in reference to the accompanying drawings, present embodiments provide a kind of artificial tooth positioning device, including upper jaw facebow 7, lower jaw facebow 8,
Supporting plate 9, positioning body 10 and positioning column 11, the upper jaw facebow 7 and the lower jaw facebow 8 are hinged, and the supporting plate 9 is set to described
8 top of lower jaw facebow, the supporting plate 9 are fixedly connected with the lower jaw facebow 8, and the positioning body 10 is set in lower jaw facebow 8,
The positioning body 10 is fixedly connected with the lower jaw facebow 8, and the positioning column 11 is set to 9 upper surface of supporting plate, described fixed
Position column 11 is fixedly connected with the supporting plate 9, and 9 upper surface of supporting plate is additionally provided with positioning substrate 1, the positioning substrate 1 and institute
The flexible connection of supporting plate 9 is stated, the positioning substrate 1 includes main part 4, position portion 5, and the main part 4 is set as polygon
Shape structure, the position portion 5 are set as T-type structure, and the main part 4 includes model orientation hole 6, close frame location hole 2,
Angle 3, the model orientation hole 6 are set as through-hole, and the conjunction frame location hole 2 is set as through-hole, and the chamfering 3 is symmetrically disposed on mould
6 two sides of type location hole.Keep 14 positioning accuracy of artificial tooth model, repetitive positioning accuracy high by the way that model orientation hole 6 is arranged, allows artificial tooth mould
Each model in type 14 can also revert to the accuracy of initially upper oral jaw bone biting when closing frame after being separated, improve
The quality of production, avoid can not resetting and cause artificial tooth model 14 to scrap, improve 80% or more production efficiency, can save weight
Multiple 90% or more manufacturing cost.The present apparatus is allowed to take when upper use conveniently by the way that chamfering is arranged, it will not be by the portion of conjunction frame
Divide component to be stopped, production efficiency 50% can be improved.
Substrate location hole 12 is additionally provided on the positioning substrate 1, the substrate location hole 12 is set as counterbore, described heavy
Hole number is three.
1 is additionally provided with substrate positioning convex platform 13 on the positioning substrate, and the substrate positioning convex platform 13 is wedge structure, institute
Stating 13 quantity of substrate positioning convex platform is six.
The seamed edge of the main part 4 is provided with chamfering.By the way that chamfering is arranged in seamed edge, seamed edge is allowed not scratch operation
The hand of person improves security performance.The seamed edge of the position portion 5 is provided with chamfering.By the way that chamfering is arranged in seamed edge, seamed edge is allowed
The hand of operator will not be scratched, security performance is improved.
Embodiment 4
Shown in reference to the accompanying drawings, present embodiments provide a kind of artificial tooth positioning device, including upper jaw facebow 7, lower jaw facebow 8,
Supporting plate 9, positioning body 10 and positioning column 11, the upper jaw facebow 7 and the lower jaw facebow 8 are hinged, and the supporting plate 9 is set to described
8 top of lower jaw facebow, the supporting plate 9 are fixedly connected with the lower jaw facebow 8, and the positioning body 10 is set in lower jaw facebow 8,
The positioning body 10 is fixedly connected with the lower jaw facebow 8, and the positioning column 11 is set to 9 upper surface of supporting plate, described fixed
Position column 11 is fixedly connected with the supporting plate 9, and 9 upper surface of supporting plate is additionally provided with positioning substrate 1, the positioning substrate 1 and institute
The flexible connection of supporting plate 9 is stated, the positioning substrate 1 includes main part 4, position portion 5, and the main part 4 is set as polygon
Shape structure, the position portion 5 are set as T-type structure, and the main part 4 includes model orientation hole 6, close frame location hole 2,
Angle 3, the model orientation hole 6 are set as through-hole, and the conjunction frame location hole 2 is set as through-hole, and the chamfering 3 is symmetrically disposed on mould
6 two sides of type location hole.Keep 14 positioning accuracy of artificial tooth model, repetitive positioning accuracy high by the way that model orientation hole 6 is arranged, allows artificial tooth mould
Each model in type 14 can also revert to the accuracy of initially upper oral jaw bone biting when closing frame after being separated, improve
The quality of production, avoid can not resetting and cause artificial tooth model 14 to scrap, improve 80% or more production efficiency, can save weight
Multiple 90% or more manufacturing cost.The present apparatus is allowed to take when upper use conveniently by the way that chamfering is arranged, it will not be by the portion of conjunction frame
Divide component to be stopped, production efficiency 50% can be improved.
Model orientation pin 15 is provided on artificial tooth model 14, the model orientation pin 15 is Nian Jie with artificial tooth model 14, model
Positioning pin 15 is taper bolt；Artificial tooth model 14 is connect by model orientation pin 15 with positioning substrate 1, model orientation pin 15 and positioning
6 clearance fit of model orientation hole on substrate 1；Artificial tooth 16 and 14 clearance fit of artificial tooth model.
The above, the only preferred embodiment of the utility model, are not intended to limit the utility model, the utility model
Scope of patent protection be subject to claims, it is equivalent made by all specifications and accompanying drawing content with the utility model
Structure change similarly should be included in the protection scope of the utility model.
Claims (8)
1. a kind of artificial tooth positioning device, including upper jaw facebow (7), lower jaw facebow (8), supporting plate (9), positioning body (10) and positioning column
(11), hingedly, the supporting plate (9) is set on the lower jaw facebow (8) for the upper jaw facebow (7) and the lower jaw facebow (8)
Side, the supporting plate (9) are fixedly connected with the lower jaw facebow (8), and the positioning body (10) is set on lower jaw facebow (8), institute
Positioning body (10) to be stated to be fixedly connected with the lower jaw facebow (8), the positioning column (11) is set to the supporting plate (9) upper surface,
The positioning column (11) is fixedly connected with the supporting plate (9), it is characterised in that: supporting plate (9) upper surface is additionally provided with positioning
Substrate (1), the positioning substrate (1) are flexibly connected with the supporting plate (9), and the positioning substrate (1) includes main part (4),
Position portion (5), the main part (4) are set as polygonized structure, and the position portion (5) is set as T-type structure, described
Main part (4) includes model orientation hole (6), is closed frame location hole (2), chamfering (3), and the model orientation hole (6) is set as logical
Hole, the conjunction frame location hole (2) are set as through-hole, and the chamfering (3) is symmetrically disposed on model orientation hole (6) two sides, the master
The material of body portion (4) is set as polymethacrylates, and the material of the position portion (5) is set as polymethylacrylic acid
Ester.
2. artificial tooth positioning device according to claim 1, it is characterised in that: the model orientation hole (6) is set as circular cone
Hole.
3. artificial tooth positioning device according to claim 1, it is characterised in that: be additionally provided with base on the positioning substrate (1)
Plate location hole (12), the substrate location hole (12) are set as counterbore, and the counterbore quantity is three.
4. artificial tooth positioning device according to claim 2, it is characterised in that: be additionally provided with base on the positioning substrate (1)
Plate positioning convex platform (13), the substrate positioning convex platform (13) are wedge structure, and substrate positioning convex platform (13) quantity is six.
5. artificial tooth positioning device according to claim 1, it is characterised in that: model orientation hole (6) quantity is no less than
Two.
6. artificial tooth positioning device according to claim 1, it is characterised in that: conjunction frame location hole (2) quantity is no less than
One.
7. artificial tooth positioning device according to claim 1, it is characterised in that: the seamed edge of the main part (4) is respectively provided with
There is chamfering.
8. artificial tooth positioning device according to claim 1, it is characterised in that: the seamed edge of the position portion (5) is respectively provided with
There is chamfering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820289345.7U CN209360946U (en) | 2018-03-01 | 2018-03-01 | A kind of artificial tooth positioning device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820289345.7U CN209360946U (en) | 2018-03-01 | 2018-03-01 | A kind of artificial tooth positioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209360946U true CN209360946U (en) | 2019-09-10 |
Family
ID=67811267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820289345.7U Active CN209360946U (en) | 2018-03-01 | 2018-03-01 | A kind of artificial tooth positioning device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209360946U (en) |
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2018
- 2018-03-01 CN CN201820289345.7U patent/CN209360946U/en active Active
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