CN204337067U - The customized metal tooth stake of simulating nature tooth mechanical property - Google Patents
The customized metal tooth stake of simulating nature tooth mechanical property Download PDFInfo
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- CN204337067U CN204337067U CN201420590050.5U CN201420590050U CN204337067U CN 204337067 U CN204337067 U CN 204337067U CN 201420590050 U CN201420590050 U CN 201420590050U CN 204337067 U CN204337067 U CN 204337067U
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- stake
- tooth
- puff
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- elastic modelling
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Abstract
The customized metal tooth stake of simulating nature tooth mechanical property is made up of stake and core, stake and core one-body molded, this metal tooth stake is made up of compact part and puff; Porous spot is in the contact area of tooth stake and undesirable root or residual tooth, and the elastic modelling quantity of puff is lower than the elastic modelling quantity of compact part.This utility model has not only adaptation and High anti bending strength, not the advantage of easy damaged root of the tooth.
Description
Technical field
This utility model relates to a kind of tooth stake.
Technical background
The wound of tooth fractures and causes decoronated teeth to be that the probability that the crowd of commonly encountered diseases, particularly field work in Maxillofacial Trauma determines wound due to job specification is comparatively large, and sickness rate is high.Post-core prosthesis technology is that the one of repairing large area dental defect commonly uses restorative procedure.Large area dental defect refers to patient's sclerous tissue of dental crown large portion disappearance, even involves root of the tooth.Because remaining tissue of tooth amount is few, complete crown cannot be used alone and obtain good maintenance.In order to increase maintenance, a part for dummy being inserted in root pipe and obtaining maintenance, this part dummy inserted in root pipe is called stake, is fixed in stake, forms final complete crown Tooth preparation and be called core together with the remaining dental hard tissue of corona.Stake relies on frictional force and obtain maintenance between bonding force and root inside pipe wall, and then provides maintenance for core and final complete crown.
At present, clinical conventional tooth stake mainly contains nonmetal stake core and metal casting stake core.Two kinds of stake cores have clear and definite pluses and minuses.
One, nonmetal stake core.What clinical practice was maximum is fibre resin stake, in the recent decade, preformation fiber post resin core becomes emerging Post-core material, its histocompatibility, caking property and color and luster aesthetic property are all better than metal material, there is the elastic modelling quantity approximate with dentin, not easily cause Tooth root fracture, do not cause gingival discoloration, can not affect NMR (Nuclear Magnetic Resonance)-imaging, clinical practice gets more and more.
But preformation fiber posts is standardized production, size is fixed, cannot suffer from defect that the residual tooth of tooth is well organized mates, be applied to that defect is large, tiny fiber posts easily fractures, comes off when providing the trouble tooth of drag and maintenance without ferrule, causes repairing failure.Preformation fiber post resin core is not integrated homogeneous texture, the existence that the nuclear resin moulded has combination interface is piled at fiber posts with at fiber posts head, when being subject to larger external force, resin core has chipping phenomenon, and nuclear resin mobility is high, not easily piles and be moulded shape when Crown defects is larger.
Two, metal casting stake core.Metal casting stake core is extensive in clinical practice, and it is made by lost wax process after making wax pattern according to the personalized form suffering from root canal, adaptation and rupture strength higher.The integrated homogeneous texture of metal casting stake core, closely sealed with trouble root canal, intensity and the maintenance of dummy can be ensured.But metal material hardness is too high, elastic modelling quantity is far above dentin, and the wedge stress produced in weaker root of the tooth inside under functional status may cause root of the tooth splitting; And metal material is also comparatively large with the elastic modelling quantity gap of bonding cement, combination interface therebetween may be concentrated because producing stress and bond failure occur, and finally causes a core to come off.
Utility model content
Although have the elastic modelling quantity approximate with dentin to overcome existing fibre resin stake, be not easy to damage root of the tooth, exist and be combined not firmly with root of the tooth, itself is easily chipping, and the shortcoming of not easy-formation; Although metal casting stake adaptation and High anti bending strength, there is elastic modelling quantity far above dentin, easily the shortcoming of damage root of the tooth.This utility model provides one not only adaptation and High anti bending strength, not the metal tooth stake of easy damaged root of the tooth.
The customized metal tooth stake of simulating nature tooth mechanical property, is made up of stake and core, stake and core one-body molded, it is characterized in that: this metal tooth stake is made up of compact part and puff; Porous spot is in the contact area of tooth stake and undesirable root or residual tooth, and the elastic modelling quantity of puff is lower than the elastic modelling quantity of compact part.
The form of stake is consistent with the form of root inside pipe wall, does not exist recessed etc. to be unfavorable for the factor that tooth stake is in place.Due to the build-in attribute that elastic modelling quantity is material, make the elastic modelling quantity of elastic modelling quantity lower than compact part of puff, can be that the different material of use two kinds of elastic modelling quantity is made, and the elastic modelling quantity of puff material is lower than the elastic modelling quantity of compact part material.
Can also be that compact part and puff adopt commaterial to make, puff be loose structure.
The hole of loose structure can be irregular distribution, as long as its porosity can make the equivalent elastic modulus of puff arrive preset elastic modelling quantity.
Certainly, the hole of loose structure also can be regular distribution.Specifically: loose structure is made up of multiple holes unit, each hole unit is made up of shell and a hole, hole is in shell, or shell is in hole, hole unit evenly and the distribution of rule, is close between the unit of hole, the porosity of adjustment loose structure mutually, realize the personalization adjustment of tooth stake equivalent elastic modulus, loose structure and compact part use same material to make.
The utility model has the advantage of:
1, puff is set in stake, by regulating the elastic modelling quantity of puff to reach the elastic modelling quantity reducing tooth stake and undesirable root or the stake of residual tooth contact area tooth, thus avoids the hardness due to stake too high and damage Dentinal problem; In stake, arrange compact part simultaneously, in turn ensure that the intensity of stake, reduce tooth stake there is damaged risk in this in time being subject to powerful external force.
2, the existence of puff can adjust the elastic modelling quantity of tooth stake local, makes the elastic modelling quantity in each cross section of tooth stake become adjustable, avoids forming stress at tooth body weakness zone and concentrates, improve the retention rate at a specified future date of tooth stake.
3, puff can be made up of the different materials of elastic modelling quantity lower than compact part elastic modelling quantity, also can be obtained by porous process by compact part material.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the tooth stake that puff and compact part are made up of bi-material.
The schematic diagram of Fig. 2 to be puff be loose structure.
Fig. 3 is the schematic diagram that tooth stake of the present invention and root pipe coordinate.
Fig. 4 is the schematic diagram of the first form of hole of the present invention unit.
Fig. 5 is the schematic diagram of the second form of hole unit.
Fig. 6 is the hole unit combination schematic diagram together of multiple the second form.
Fig. 7 is the process chart of manufacture method of the present invention.
Fig. 8 is the digitalized oral cavity die of patient, and wherein, a is the front view of digitalized oral cavity die, and b is the top view of digitalized oral cavity die, and c is the root pipe sectional views of digitalized oral cavity die.
Fig. 9 is the schematic diagram of the present invention when repairing for multirooted teeth.
Detailed description of the invention
Embodiment 1
The customized metal tooth stake of simulating nature tooth mechanical property as shown in Figure 1, is made up of stake 1 and core 2, stake 1 and core 2 one-body molded, stake 1 is made up of compact part 12 and puff 11, and compact part 12 is wrapped within puff 11; Puff is made up of the material of elastic modelling quantity lower than compact part elastic modelling quantity.Such as compact part has the metal material of higher elasticity modulus by cochrome, titanium alloy etc., or as pottery etc. have higher elasticity modulus nonmetallic materials composition; Puff is by billon, and silver amalgam etc. compared with the metal material of low elastic modulus, or form compared with the nonmetallic materials of low elastic modulus as fiber-reinforced resin etc.
The advantage of the present embodiment is:
1, puff is set in stake, by the elastic modelling quantity selecting the material of puff to regulate puff, makes the elastic modelling quantity of elastic modelling quantity lower than compact part of puff, thus reduce hardness due to stake too high and damage Dentinal risk; In stake, arrange compact part simultaneously, in turn ensure that the fastness of stake, reduce stake there is damaged risk in this in time being subject to powerful external force.
2, the existence of puff can reduce the elastic modelling quantity of tooth stake and undesirable root or the stake of residual tooth contact area tooth, makes the elastic modelling quantity in each cross section of tooth stake become adjustable, avoids forming stress at tooth body weakness zone and concentrates, improve the retention rate at a specified future date of tooth stake.
3, utilize the feature of rapid shaping technique, various forms of micro structure can be designed on the surface of tooth stake, strengthen the bonding strength of personalized tooth stake and undesirable root or residual tooth, improve and to cause because of bonding agent skewness root of the tooth upper stress to distribute inconsistent situation.
Embodiment 2
A kind of customized metal tooth stake as shown in Figure 2, is made up of stake 1 and core 2, stake 1 and core 2 one-body molded, stake 1 is made up of compact part 12 and puff 11.
The irregular distribution in hole of loose structure, as long as its porosity can make the equivalent elastic modulus of puff arrive preset elastic modelling quantity.
We provide a kind of method preparing this customized metal tooth stake, comprise the following steps:
Make the method for above-mentioned metal tooth stake, comprise the following steps:
1), conventional repair capsule, tooth preparation;
2) the digitalized oral cavity die of patient, is obtained;
3), according to the construction features of patient's root pipe and tooth body residue situation, the threedimensional model of design tooth stake, tooth stake is made up of stake and core;
4), the root pipe of stake and residual tooth is adaptive, searches out the contact area of tooth stake and undesirable root or residual crown; This contact area is set to puff; Part beyond contact area is compact part; The elastic modelling quantity of puff is lower than the elastic modelling quantity of compact part; Puff is loose structure, and the pass of the porosity of loose structure and its equivalent elastic modulus is:
, wherein,
for the elastic modelling quantity of loose structure,
c,
kfor constant,
for the elastic modelling quantity of compact part,
for the hole of puff; Preserve the tooth stake model data of puff;
5) the tooth stake model data of puff, step 4) is had to import rapidform machine, the layout of adjustment tooth stake model on rapidform machine, titanium alloy powder, cobalt-chromium alloy powder or silver palladium alloy powder etc. is selected to be applicable to make the material of tooth stake as moulding material, with the stake of rapidform machine molding tooth;
6), to tooth stake repair, make the root pipe of tooth stake and patient closely sealed.
The advantage of the present embodiment is:
1, puff is set in stake, by regulating the porosity of puff, and then reach make puff elastic modelling quantity lower than the elastic modelling quantity of compact part, thus reduce hardness due to stake too high and damage Dentinal risk; In stake, arrange compact part simultaneously, in turn ensure that the fastness of stake, reduce stake there is damaged risk in this in time being subject to powerful external force.
2, the existence of puff can the elastic modelling quantity of tooth stake and undesirable root or the stake of residual tooth contact area tooth, makes the elastic modelling quantity in each cross section of tooth stake become adjustable, avoids forming stress at tooth body weakness zone and concentrate, improve the retention rate at a specified future date of tooth stake.
Embodiment 3
The difference of the present embodiment and embodiment 2 is: the hole of loose structure is regular distribution as shown in Figure 3.Specifically: loose structure is made up of multiple holes unit, each hole unit is made up of a shell A and hole B, hole B 111A as shown in Figure 4 in shell A, or shell A 111B as shown in Figure 4 in the B of hole, hole unit evenly and the distribution of rule, is close between the unit of hole, the porosity of adjustment loose structure mutually, realize the personalization adjustment of tooth stake equivalent elastic modulus, loose structure and compact part use same material to make.
As shown in Figure 5,6, so-called shell refers in hole, and this hole unit 111B needs to coordinate with other hole unit 111B and surrounds an empty region, and the region enclosing the sky of formation is called hole B, becomes shell A with the part of other hole unit matching.All the other structures are identical with embodiment 2.
The making method of personalized tooth stake of the present embodiment and the difference of the manufacture method of embodiment 2 are: when designing the elastic modelling quantity of tooth stake, stake and root pipe adaptation, and the elastic modelling quantity model of tooth stake is:
; Wherein:
for in of stake
iequivalent elastic modulus on individual cross section;
for in of stake
ithe elastic modelling quantity of the compact part on individual cross section,
for in of stake
ithe equivalent elastic modulus of the porous portion on individual cross section,
for of stake
ion individual cross section, compact part area accounts for the proportion of cross-sectional area.Reached the object of the elastic modelling quantity regulating tooth stake by the quantity of adjustment hole unit, make the elastic modelling quantity of tooth stake close to Dentinal elastic modelling quantity, thus reduce the risk of damage root of the tooth.All the other steps are identical with the manufacture method of embodiment 2.
Hole unit is for being both regular shape, and as square, cuboid, prism etc. also can be non-regular shape, as long as can realize between the unit of hole bonded to each other.Be illustrated in figure 3 a kind of hole unit signal of form.But the shape of hole unit is not limited to the citing of accompanying drawing.Can also be shell be square, hole be spherical etc.
The advantage of the present embodiment is:
Puff is made up of hole unit, and the porosity of hole unit can be determined by the ratio in adjustment shell and hole, and the size in aperture, shape and porosity can carry out personalization adjustment according to the working ability of different rapidform machine and feature.Because puff is closely made up of some holes unit, therefore the characteristic such as porosity and elastic modelling quantity of puff and the characteristic such as porosity and elastic modelling quantity of hole unit are consistent, only need the porosity of adjustment hole unit, just can obtain porosity and the elastic modelling quantity of puff, very easy.
Content described in this description embodiment is only enumerating the way of realization that utility model is conceived; protection domain of the present utility model should not be regarded as being only limitted to the concrete form that embodiment is stated, protection domain of the present utility model also and conceive the equivalent technologies means that can expect according to this utility model in those skilled in the art.
Claims (5)
1. the customized metal tooth stake of simulating nature tooth mechanical property, is made up of stake and core, stake and core one-body molded, it is characterized in that: this metal tooth stake is made up of compact part and puff; Porous spot is in the contact area of tooth stake and undesirable root or residual tooth, and the elastic modelling quantity of puff is lower than the elastic modelling quantity of compact part.
2. the customized metal tooth stake of simulating nature tooth mechanical property as claimed in claim 1, it is characterized in that: the form of stake is consistent with the form of root inside pipe wall, the material that puff and compact part use two kinds of elastic modelling quantity different is respectively made, and the elastic modelling quantity of puff material is lower than the elastic modelling quantity of compact part material.
3. the customized metal tooth stake of simulating nature tooth mechanical property as claimed in claim 1, is characterized in that: compact part and puff adopt commaterial to make, and puff is loose structure.
4. the customized metal tooth stake of simulating nature tooth mechanical property as claimed in claim 3, is characterized in that: the irregular distribution in hole of loose structure.
5. the customized metal tooth stake of simulating nature tooth mechanical property as claimed in claim 3, it is characterized in that: loose structure is made up of multiple holes unit, each hole unit is made up of shell and a hole, hole is in shell, or shell is in hole, hole unit evenly and the distribution of rule, is close between the unit of hole mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420590050.5U CN204337067U (en) | 2014-10-13 | 2014-10-13 | The customized metal tooth stake of simulating nature tooth mechanical property |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420590050.5U CN204337067U (en) | 2014-10-13 | 2014-10-13 | The customized metal tooth stake of simulating nature tooth mechanical property |
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| CN204337067U true CN204337067U (en) | 2015-05-20 |
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| CN201420590050.5U Withdrawn - After Issue CN204337067U (en) | 2014-10-13 | 2014-10-13 | The customized metal tooth stake of simulating nature tooth mechanical property |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104367387A (en) * | 2014-10-13 | 2015-02-25 | 浙江工业大学 | Personalized metallic dental pile simulating mechanical property of natural tooth and manufacturing method thereof |
-
2014
- 2014-10-13 CN CN201420590050.5U patent/CN204337067U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104367387A (en) * | 2014-10-13 | 2015-02-25 | 浙江工业大学 | Personalized metallic dental pile simulating mechanical property of natural tooth and manufacturing method thereof |
| CN104367387B (en) * | 2014-10-13 | 2017-07-25 | 浙江工业大学 | Simulate customized metal tooth stake of nature tooth mechanical property and preparation method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Peng Wei Inventor after: You Zuoling Inventor after: You Jia Inventor after: Dong Xingtao Inventor after: Yao Chunyan Inventor before: Peng Wei Inventor before: You Zuoling Inventor before: You Jia Inventor before: Dong Xingtao |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: PENG WEI YOU ZUOLING YOU JIA DONG XINGTAO TO: PENG WEI YOU ZUOLING YOU JIA DONG XINGTAO YAO CHUNYAN |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150520 Effective date of abandoning: 20170725 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20150520 Effective date of abandoning: 20170725 |