CN107198581A - Tooth root canal pile - Google Patents
Tooth root canal pile Download PDFInfo
- Publication number
- CN107198581A CN107198581A CN201710366058.1A CN201710366058A CN107198581A CN 107198581 A CN107198581 A CN 107198581A CN 201710366058 A CN201710366058 A CN 201710366058A CN 107198581 A CN107198581 A CN 107198581A
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- CN
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- Prior art keywords
- mrow
- thread
- root canal
- mass fraction
- tooth
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 210000000988 bone and bone Anatomy 0.000 claims abstract description 29
- 210000004268 dentin Anatomy 0.000 claims description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 210000004262 dental pulp cavity Anatomy 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 229910052717 sulfur Inorganic materials 0.000 claims description 9
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- 229910052748 manganese Inorganic materials 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 238000012937 correction Methods 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 229910052738 indium Inorganic materials 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 4
- 239000003755 preservative agent Substances 0.000 abstract description 3
- 230000002335 preservative effect Effects 0.000 abstract description 3
- 241000337665 Phatnoma Species 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 6
- 239000000835 fiber Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 229910052573 porcelain Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 239000007943 implant Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 208000001798 Nonvital Tooth Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 210000003074 dental pulp Anatomy 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The present invention relates to a kind of tooth root canal pile, including tubular body, step and head, the step is arranged on the periphery of the tubular body and head connectivity part；The tubular body is threaded rod, and the screw thread that the threaded rod is set is two-way bone thread, and the head is provided with least one boss.Present invention is mainly used for dummy in human teeth's large area carious tooth, defect repair maintenance, the i.e. preservative restoration of residual crown reparation and undesirable root and tooth body connection maintenance.Residual crown, the preservative restoration of undesirable root is conducive to keeping Arch width, maintains phatnoma bone height, recovers occluding relation and masticatory function.With operation by chair is completed, further consultation number of times is few, the advantage such as easy to control Guan Weilu, it is adaptable to human teeth's large area carious tooth defect repair is treated.
Description
Technical field
The invention belongs to dental prosthetics industry, more particularly to a kind of tooth root canal pile.
Background technology
In recent years, because of the maturation of root canal treatments, increasing dental pulp, periapex sufferer tooth are retained, in order to
Recover the physiology profile and function of tooth body, core crown body is used widely.But because pulpless teeth dentine humidity reduces,
Elasticity and intensity decreases, easily cause odontagma, often result in repairing failure.Therefore the selection to pile material and profile is favorably improved
Clinical post-core prosthesis effect.
The fold resistance of post-core restorative system after many document reports Post-core material and design form influence endodontic treatment
Energy.Prefabricated post material mainly includes metalline stake, fiber posts and porcelain stake.Generally, metalline stake and the intensity of porcelain stake will
Higher than fiber posts, but fiber posts contrast has more preferable pliability with metalline stake and porcelain stake, and is difficult to cause root to be rolled over.In intensity and
How to give up to take between pliability and do not report clearly still.
Different pile materials can influence the stress pattern of dentine and size after repairing, to the maintenance and drag of dummy
Property has a major impact.Traditionally, cast pile-core system turns into first choice due to its preferable mechanical strength.However, due to metal
Modulus of elasticity be far above dentine, excessive stress may concentrate on the end of stake, and the destructiveness for ultimately resulting in root of the tooth is hung down
Straight fracture.When that happens, it is difficult clinically to repair again, most roots of the tooth must all be pulled out.Therefore, many studies have shown that bullet
Property modulus close to dentine root canal pile material more can use.
At present, clinical conventional pre- pile mainly has metalline stake (stainless piling bar and titanium stake etc.), porcelain stake and fiber posts.Fiber
Stake is because its modulus of elasticity is relatively close to dentine and is difficult to cause odontagma, the deep pro-gaze by dentists.But fiber posts belong to
Duplex transportation material, can degrade after epoxy resin water suction and become unstable, finally cause the decline of mechanical strength.
The content of the invention
The present invention is directed to shortcoming of the prior art, in order to reduce the generation of root folding, improve core crown it is at a specified future date into
Power, it is an object of the present invention to provide a kind of tooth root canal pile.
In order to solve the above-mentioned technical problem, the present invention is addressed by following technical proposals：
A kind of tooth root canal pile, including tubular body, step and head, the step are arranged on the tubular body and head
The periphery of portion's connectivity part；
The tubular body is threaded rod, and the screw thread that the threaded rod is set is two-way bone thread, and the head is provided with extremely
A few boss；
The two-way bone thread includes the first screw thread and the second screw thread, and first screw thread and the second screw thread be arranged in parallel.
As a kind of embodiment, the thread connection loading force of the two-way bone thread should meet below equation：Set
The dentine internal thread connection loading force for treating straightening of teeth is Wns, then calculated by following equation：
Similarly the thread connection loading force of two-way bone thread is Wbs, will be calculated by following formula：
Assuming that maximum retention should be the formula W of the above two during correctionbs=WnsUnder the conditions of, should according to the shearing of two-way bone thread
Force intensity ζ b and the screw thread Shear stress strength ζ n suffered by tooth are substituted into and are obtained dentineValue,
Various middle symbol：
W- thread connection loading forces
Method uniaxial stress of the N- loading forces on flank
F-N is by the direct stress after frictional force
Shear stress actual and in the same direction AB S-
Angle between ρ-N, F, also known as angle of friction
Angle between α-N, W
Angle between-W, S, actually cuts off angle
Dc- major diameter of threads
The dp- pitch diameters of thread
Dc- dentine nut thread internal diameters
Z- ridge numbers.
As a kind of embodiment, the step is cylinder is from closed loop and is looped around the tubular body and head company
The periphery at logical place, the thickness of the step is 0.2~0.3mm, the external diameter of the step for the tooth shaft diameter 1.2~
1.5 again.
As a kind of embodiment, the external diameter of the tubular body is any number in 0.9mm~1.4mm.
As a kind of embodiment, the two-way bone thread vertex angle theta angle is 45 °~65 °, two-by-two the two-way murices
The distance between line T is 0.30~0.60mm.
As a kind of embodiment, the length of the tooth root canal pile is 8.5~13mm, 8.5~14mm, 9.5~
Any number in 15mm, the length L1 on head is any number in 4~5mm.
As a kind of embodiment, the boss is square boss or annular boss, the boss
Thickness be at least 2 times of step thicknesses.
As a kind of embodiment, the tooth is stainless steel with the material of root canal pile, stainless composition of steel include C,
Si, Mn, P, S, N, Cr, Mo, Ni, Cu and Fe；
The mass fraction of the C is less than or equal to 0.030%, and the mass fraction of the Si is less than or equal to 1%, Mn quality
The mass fraction that fraction is less than or equal to 2%, P is less than or equal to 0.025%, S mass fraction less than or equal to 0.01%, N quality
Fraction be less than or equal to 0.1%, Cr mass fraction be any number in 17%~19%, Mo mass fraction be 2.25%~
The mass fraction of any number, Ni in 3.5% is any number in 13%~15%, Cu mass fraction is less than or equal to
0.5%th, remaining remaining percentage is Fe mass fraction.
The present invention is as a result of above technical scheme, with significant technique effect：
Present invention is mainly used for human teeth's large area carious tooth, defect repair maintenance, i.e. residual crown reparation and the preservation of undesirable root
Dummy and tooth body connection maintenance in reparation.Residual crown, the preservative restoration of undesirable root is conducive to keeping Arch width, maintains alveolar bone high
Degree, recovers occluding relation and masticatory function.With operation by chair is completed, further consultation number of times is few, the advantage such as easy to control Guan Weilu, fit
For the treatment of human teeth's large area carious tooth defect repair.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the overall structure figure of the present invention.
Fig. 2 is the two-way bone thread structural representation one of the present invention.
Embodiment
With reference to embodiment, the present invention is described in further detail, following examples be explanation of the invention and
The invention is not limited in following examples.
Exemplary invention
As shown in Fig. 1~2, a kind of tooth root canal pile, including tubular body 1, step 3 and head 2, step 3 is arranged on pipe
The periphery of post main body 1 and the connectivity part of head 2；
Tubular body 1 is threaded rod, and the screw thread that threaded rod is set is two-way bone thread, and head 2 is strengthened provided with least one
Block 4.
Further, step 3 from closed loop and is looped around the periphery of tubular body 1 and the connectivity part of head 2, step for cylinder
2 thickness is 0.2~0.3mm, and the external diameter of step 2 is 1.2~1.5 times of tooth shaft diameter, and the external diameter of tubular body 1 is
Any number in 0.9mm~1.4mm, as shown in Fig. 2 two-way bone thread vertex angle theta angle is 45 °~65 °, two-by-two two-way murices
The distance between line T is 0.30~0.60mm, and the length of tooth root canal pile is in 8.5~13mm, 8.5~14mm, 9.5~15mm
Any number.
Embodiment 1
This invention is described with reference to concrete structure and data.
A kind of tooth root canal pile, including tubular body 1, step 3 and head 2, step 2 are arranged on tubular body 1 and head 2
The periphery of connectivity part；
Tubular body 1 is threaded rod, and the screw thread that threaded rod is set is two-way bone thread, and head 2 is strengthened provided with least one
Block 4.
Further, step 3 from closed loop and is looped around the periphery of tubular body 1 and the connectivity part of head 2, step for cylinder
3 thickness is 0.2~0.3mm, and the external diameter of step 3 is 1.2~1.5 times of tooth shaft diameter, and the outer diameter D of tubular body 1 is
Any number in 0.9mm~1.4mm, two-way bone thread corner angle θ be 45 °~65 °, two-by-two between two-way bone thread away from
It is the Arbitrary Digit in 8.5~13mm, 8.5~14mm, 9.5~15mm from the length L for 0.30~0.60mm, tooth root canal pile
Value, the length L1 on head is any number in 4~5mm.
The thread connection loading force of the two-way bone thread should meet below equation：
It is W to set the dentine internal thread for treating straightening of teeth to couple loading forcens, then calculated by following equation：
Similarly the thread connection loading force of two-way bone thread is Wbs, will be calculated by following formula：
Assuming that maximum retention should be the formula W of the above two during correctionbs=WnsUnder the conditions of, should according to the shearing of two-way bone thread
Force intensity ζ b and the screw thread Shear stress strength ζ n suffered by tooth are substituted into and are obtained dentineValue,
Various middle symbol：
W- thread connection loading forces
Method uniaxial stress of the N- loading forces on flank
F-N is by the direct stress after frictional force
Sum actual S-Shear stress in the same direction
Angle between ρ-N, F, also known as angle of friction
Angle between α-N, W
Angle between-W, S, actually cuts off angle
Dc- major diameter of threads
The dp- pitch diameters of thread
Dc- dentine nut thread internal diameters
Z- ridge numbers.
By calculating, dentine screw thread will obtain maximum linking intensity, and dentine ridge thickness should be metal threaded tooth thickness
4-8 times.
According to this evaluation, the bone amount of increase dentine nut thread is the metal threaded pitch T of increase, can be increased
Linking intensity, but in this calculating of practical application, when the flighted length of nail, stake is restricted, increase pitch then subtracts simultaneously
Few ridge number, the load of pressure-bearing will also be reduced.Therefore the influence of pitch and the number of teeth to linking intensity is taken into account, the design takes murices
The pitch T of line is 1.5~2 times of common standard pitch.
Bone thread on tubular body is the screw thread of screw, and it is matching be dentine screw thread, be nut thread,
The screw thread of itself is thinned the nail of two-way bone thread, and adds the thickness of dentine nut thread, adds dentine strong
Degree, also increases retention intensity.Again because the screw thread side gradient of bone thread reduces, the direct stress increase for making to pull or being pressurized,
The lateral component of stress reduces, so as to also increase fixing ability.
Boss 4 is square boss or annular boss, and the thickness of boss is at least 2 times of step thicknesses.
Tooth is stainless steel with the material of root canal pile, and stainless composition of steel includes C, Si, Mn, P, S, N, Cr, Mo, Ni, Cu
And Fe；
The mass fraction that C mass fraction is less than or equal to 0.030%, Si is less than or equal to 1%, Mn mass fraction and is less than etc.
Be less than in 2%, P mass fraction mass fraction less than or equal to 0.01%, N of the mass fraction less than or equal to 0.025%, S etc.
In 0.1%, Cr mass fraction be any number in 17%~19%, Mo mass fraction be in 2.25%~3.5%
Any number, Ni mass fraction be 13%~15% in any number, Cu mass fraction be less than or equal to 0.5%, remaining
Remaining percentage is Fe mass fraction.
It is as shown in the table
Root canal pile is manufactured from surgical implant with stainless steel material, and its requirement should meet GB4234《Surgical implant is used
Stainless steel》The requirement of defined；If product carries out gold content in gold-plated processing, Gold plated Layer and answers >=99.0%.
The trade mark and chemical composition (heat analysis) of the steel of table 1
Mechanical property is as shown in the table：
The mechanical property of the steel wire of table 2
Tooth has also made surface gold-plating processing of root canal pile, it is ensured that coating is uniform, bright color, and root canal pile matrix should with coating
It is firmly combined with.
Furthermore, it is necessary to explanation, the specific embodiment described in this specification, is named the shape of its parts and components
Title etc. can be different.All equivalent or simple changes done according to the construction of inventional idea of the present invention, feature and principle, are included in
In the protection domain of patent of the present invention.Those skilled in the art can do to described specific embodiment
It is various modification supplement or using similar mode substitute, without departing from the present invention structure or surmount this right
Scope defined in claim, all should belong to protection scope of the present invention.
Claims (8)
1. a kind of tooth root canal pile, it is characterised in that including tubular body, step and head, the step is arranged on the pipe
The periphery of post main body and head connectivity part；
The tubular body is threaded rod, and the screw thread that the threaded rod is set is two-way bone thread, and the head is provided with least one
Individual boss；
The two-way bone thread includes the first screw thread and the second screw thread, and first screw thread and the second screw thread be arranged in parallel.
2. tooth root canal pile according to claim 1, it is characterised in that the thread connection loading force of the two-way bone thread
Below equation should be met：
It is W to set the dentine internal thread for treating straightening of teeth to couple loading forceNs, thenCalculated by following equation：
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<mo>)</mo>
</mrow>
</mrow>
</mfrac>
</mrow>
Similarly the thread connection loading force of two-way bone thread is Wbs, will be calculated by following formula：
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Assuming that maximum retention should be the formula W of the above two during correctionbs=WnsUnder the conditions of, according to the Shear stress strength of two-way bone thread
ζ b and the screw thread Shear stress strength ζ n suffered by tooth are substituted into and are obtained dentineValue,
Various middle symbol：
W- thread connection loading forces
Method uniaxial stress of the N- loading forces on flank
F-N is by the direct stress after frictional force
Sum actual S-Shear stress in the same direction
Angle between ρ-N, F, also known as angle of friction
Angle between α-N, W
Angle between-W, S, actually cuts off angle
Dc- major diameter of threads
The dp- pitch diameters of thread
Dc- dentine nut thread internal diameters
Z- ridge numbers.
3. tooth root canal pile according to claim 1, it is characterised in that the step is cylinder is from closed loop and is looped around
The periphery of the tubular body and head connectivity part, the thickness of the step is 0.2~0.3mm, and the external diameter of the step is institute
State tooth shaft diameter 1.2~1.5 times.
4. tooth root canal pile according to claim 1, it is characterised in that the external diameter of the tubular body be 0.9mm~
Any number in 1.4mm.
5. tooth root canal pile according to claim 1, it is characterised in that the two-way bone thread vertex angle theta angle is 45 °~
65 °, the distance between described two-way bone thread T is 0.30~0.60mm two-by-two.
6. tooth root canal pile according to claim 1, it is characterised in that the length of the tooth root canal pile is 8.5~
Any number in 13mm, 8.5~14mm, 9.5~15mm, the length L1 on head is any number in 4~5mm.
7. tooth root canal pile according to claim 1, it is characterised in that the boss is square boss or ring
Shape boss, the thickness of the boss is at least 2 times of step thicknesses.
8. tooth root canal pile according to claim 1, it is characterised in that the tooth is stainless steel with the material of root canal pile
Matter, the tooth is provided with bionical taper head with the head of root canal pile, and the bionical taper head is provided with bionical radian, stainless steel into
Dividing includes C, Si, Mn, P, S, N, Cr, Mo, Ni, Cu and Fe；
The mass fraction of the C is less than or equal to 0.030%, and the mass fraction of the Si is small less than or equal to 1%, Mn mass fraction
The mass fraction that the mass fraction for being less than or equal to 0.025%, S in the mass fraction equal to 2%, P is less than or equal to 0.01%, N is small
In the mass fraction equal to 0.1%, Cr be any number in 17%~19%, Mo mass fraction be 2.25%~3.5%
In any number, Ni mass fraction be 13%~15% in any number, Cu mass fraction be less than or equal to 0.5%,
Remaining remaining percentage is Fe mass fraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710366058.1A CN107198581A (en) | 2017-05-23 | 2017-05-23 | Tooth root canal pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710366058.1A CN107198581A (en) | 2017-05-23 | 2017-05-23 | Tooth root canal pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107198581A true CN107198581A (en) | 2017-09-26 |
Family
ID=59905622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710366058.1A Pending CN107198581A (en) | 2017-05-23 | 2017-05-23 | Tooth root canal pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107198581A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111513879A (en) * | 2020-04-28 | 2020-08-11 | 刘清波 | Method for implanting tooth and corresponding implant tooth |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4480997A (en) * | 1981-11-16 | 1984-11-06 | Deutsch Allan S | Dental post and wrench therefor and method of restoring bulk to a tooth root therewith |
| CN87215068U (en) * | 1987-11-03 | 1988-08-24 | 浙江大学 | Dental passivating bone screw canal nail |
| JPS6480355A (en) * | 1987-09-22 | 1989-03-27 | Micron Kk | Chucking apparatus of dental root canal treatment tool holder |
| CN1775185A (en) * | 2005-11-21 | 2006-05-24 | 孙梦华 | Pile nuclear (crown) tooth for neck edge and root face fit |
| CN2815300Y (en) * | 2005-08-05 | 2006-09-13 | 张少华 | Ultrasonic multifunction gutta peercha point root canal stuffer |
-
2017
- 2017-05-23 CN CN201710366058.1A patent/CN107198581A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4480997A (en) * | 1981-11-16 | 1984-11-06 | Deutsch Allan S | Dental post and wrench therefor and method of restoring bulk to a tooth root therewith |
| JPS6480355A (en) * | 1987-09-22 | 1989-03-27 | Micron Kk | Chucking apparatus of dental root canal treatment tool holder |
| CN87215068U (en) * | 1987-11-03 | 1988-08-24 | 浙江大学 | Dental passivating bone screw canal nail |
| CN2815300Y (en) * | 2005-08-05 | 2006-09-13 | 张少华 | Ultrasonic multifunction gutta peercha point root canal stuffer |
| CN1775185A (en) * | 2005-11-21 | 2006-05-24 | 孙梦华 | Pile nuclear (crown) tooth for neck edge and root face fit |
Non-Patent Citations (1)
| Title |
|---|
| 王国庆等: "带台阶和双向骨螺纹的牙体修复固位钉、桩系统", 《口腔医学》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111513879A (en) * | 2020-04-28 | 2020-08-11 | 刘清波 | Method for implanting tooth and corresponding implant tooth |
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