CN108788644A - A kind of preparation method of the flexible root canal file of Nitinol - Google Patents
A kind of preparation method of the flexible root canal file of Nitinol Download PDFInfo
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- CN108788644A CN108788644A CN201810645065.XA CN201810645065A CN108788644A CN 108788644 A CN108788644 A CN 108788644A CN 201810645065 A CN201810645065 A CN 201810645065A CN 108788644 A CN108788644 A CN 108788644A
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- 210000004262 dental pulp cavity Anatomy 0.000 title claims abstract description 113
- 229910001000 nickel titanium Inorganic materials 0.000 title claims abstract description 82
- HLXZNVUGXRDIFK-UHFFFAOYSA-N nickel titanium Chemical compound [Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ti].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni].[Ni] HLXZNVUGXRDIFK-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 18
- 238000000465 moulding Methods 0.000 claims abstract description 14
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000005498 polishing Methods 0.000 claims abstract description 11
- 238000005422 blasting Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 9
- 238000012372 quality testing Methods 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 229910052719 titanium Inorganic materials 0.000 claims description 5
- 238000013021 overheating Methods 0.000 claims description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 2
- 238000009434 installation Methods 0.000 claims 2
- 241000218202 Coptis Species 0.000 claims 1
- 235000002991 Coptis groenlandica Nutrition 0.000 claims 1
- 229910001069 Ti alloy Inorganic materials 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 58
- 238000005520 cutting process Methods 0.000 abstract description 6
- 238000002791 soaking Methods 0.000 description 8
- 238000012360 testing method Methods 0.000 description 8
- 238000004321 preservation Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 125000004429 atom Chemical group 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000002929 anti-fatigue Effects 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical group [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000416536 Euproctis pseudoconspersa Species 0.000 description 1
- 229910000846 In alloy Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical group [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots
- A61C5/42—Files for root canals; Handgrips or guiding means therefor
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/10—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of nickel or cobalt or alloys based thereon
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Neurosurgery (AREA)
- Epidemiology (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Neurology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The present invention relates to medical instruments fields, specifically disclose a kind of preparation method of the flexible root canal file of Nitinol, include the following steps：The Nitinol wire rod of preset length is processed using numerically-controlled machine tool, obtains the flexible root canal file of Nitinol of mechanical processing molding；The surface of the flexible root canal file of Nitinol of mechanical processing molding is processed by shot blasting；The flexible root canal file of Nitinol after polishing treatment is heat-treated.The preparation method of the flexible root canal file of Nitinol using the present invention, it can ensure that the rigidity of root canal file is stablized, hardness and fatigue life satisfy the use demand, greatly reduce and files the frequency that curved pipe side is worn, stretched using Nitinol is flexible, ensure to improve fatigue resistance under the premise of cutting power, shortens treatment time；And it can be according to the temperature and time of the color demand adjustment heat treatment appropriate of root canal file product.
Description
Technical field
The present invention relates to the preparation methods of medical instruments field more particularly to a kind of flexible root canal file of Nitinol.
Background technology
Existing root canal file includes that superlastic root canal file and deformation are filed, but use superlastic root canal file and deformation pre-bending file to tooth
There are following technical problems during tooth is treated：
1, it when the rigidity of superlastic root canal file is larger, during use is easy that curved pipe side is made to wear, stretch；It is easy during use
Root canal file is caused to fracture, easily the dental nerve of injured patients, disconnected root canal file inside are not easy to take when root canal file occur and fractureing
Go out to increase the pain of patient.
2, the cutting power of the opposite superlastic root canal file of deformation pre-bending file is weaker, and the cutting time lengthens, when needing extended treatment
Between, the experience of doctor and patient are poor.
Invention content
The purpose of the present invention is to provide a kind of flexible root canal files of Nitinol, can greatly reduce using Nitinol
It is flexible to curved root canal when the side frequency wearing, stretch, ensure to improve fatigue resistance under the premise of cutting power, shortening is controlled
Treat the time.
For this purpose, the present invention uses following technical scheme：
A kind of preparation method of the flexible root canal file of Nitinol, includes the following steps：
The Nitinol wire rod of preset diameters is processed using numerically-controlled machine tool, obtains the NiTi of several mechanical processing moldings
The flexible root canal file of alloy；
The surface of the flexible root canal file of Nitinol of mechanical processing molding is processed by shot blasting；
The flexible root canal file of Nitinol after polishing treatment is heat-treated.
Further, the Nitinol wire rod of preset diameters, preset length is chosen, the preset length is at least more than root pipe
The length of file.
Further, by holding furnace of the flexible root canal file of Nitinol at 400 DEG C -500 DEG C after polishing treatment
Inside holding 30min-70min then takes out and cools down in air.
Further, upper handle is installed by the Nitinol being thermally treated resulting in flexible root canal file, forms Nitinol
Flexible root canal file product.
Further, include golden and blue by the color of the flexible root canal file of the Nitinol being thermally treated resulting in.
Further, it needs to carry out the flexible root canal file of Nitinol by being thermally treated resulting in before handle is installed
Quality testing, including size detection, hardness determination and color detection.
Further, the surface of the flexible root canal file of Nitinol of mechanical processing molding is polished using polishing machine
Processing.
Further, titanium atom percentage composition is 5%-15% in the Nitinol wire rod.
Further, nickle atom percentage composition is 50%-60% in the Nitinol wire rod.
Beneficial effects of the present invention：The preparation method of the flexible root canal file of Nitinol using the present invention, can ensure
The rigidity of root canal file is stablized, and hardness and fatigue life satisfy the use demand, and greatly reduces the flexible file of Nitinol and is managed to curved
The frequency that side is worn, stretched when treatment ensures to improve fatigue resistance under the premise of cutting power, shortens treatment time；And energy
The temperature and time of enough color demands according to root canal file adjustment heat treatment appropriate.
Description of the drawings
Fig. 1 is the flow chart of the preparation method of the flexible root canal file of Nitinol of the present invention.
Specific implementation mode
Technical solution to further illustrate the present invention below with reference to the accompanying drawings and specific embodiments.
The present invention provides a kind of preparation method of the flexible root canal file of Nitinol, Fig. 1 is that NiTi of the present invention closes
The flow chart of the preparation method of the flexible root canal file of gold, is described in detail this method with reference to Fig. 1, specifically includes following
Step：
S10, the Nitinol wire rod for choosing preset diameters, preset length.
Wherein, preset diameters and preset length are determined according to the appearance and size of molding root canal file to be processed respectively, such as long
Degree, maximum gauge, different length, the corresponding preset length of root canal file of different maximum gauges, preset diameters are different, usually used
Preset diameters have 1.2mm, 1.0mm or 0.8mm；Length of the preset length at least more than root canal file.
Titanium atom percentage composition is 5%-15% in Nitinol wire rod, and nickle atom percentage composition is 50%-60%, NiTi
In alloy wire other than titanium atom and nickle atom, carbon atom, percentage composition also containing percentage composition less than 0.5% are less than
0.5% oxygen atom, percentage composition are small less than 0.5% chromium atom, percentage composition less than 0.5% hydrogen atom, percentage composition
The iron atom of copper atom, percentage composition less than 0.5%, niobium atom etc. of the percentage composition less than 0.5% in 0.5%.
S20, the Nitinol wire rod in step S10 is processed using numerically-controlled machine tool, obtains several mechanical processing moldings
The flexible root canal file of Nitinol.
The processing of numerically-controlled machine tool belongs to the prior art, no longer superfluous herein to chat.
S30, place is polished to the surface of the flexible root canal file of Nitinol of the mechanical processing molding obtained in S20
Reason.
The surface of the flexible root canal file of Nitinol of the mechanical processing molding obtained in S20 is thrown using polishing machine
Light processing.
S40, the flexible root canal file of Nitinol after the polishing treatment that is obtained in S30 is heat-treated.
Holding furnace inside holding 30min- of the flexible root canal file of Nitinol at 400 DEG C -500 DEG C after polishing treatment
70min then takes out and cools down in air, the root canal file after being heat-treated.The NiTi obtained after Overheating Treatment closes
The color of the flexible root canal file of gold includes golden and blue, goes back chromatic colour, and wherein colour refers between golden and blue
Color.
S50, quality testing, including size, rigidity, fatigue life, hardness and color are carried out to the root canal file after heat treatment
Detection.
It is required that after Overheating Treatment, dimensional accuracy, rigidity, hardness and the fatigue life detection of root canal file are satisfied by use
It is required that and color is required to meet the requirement of client.
S60, the root canal file after S50 quality testing qualifications install upper handle, form the flexible root canal file of Nitinol
Product.
Embodiment one
S110, a diameter of 1.2mm of selection, length is 2.5m and titanium atom percentage composition is 5%-15% and nickle atom percentage
Content is 50%-60% Nitinol wire rods.
S120, the Nitinol wire rod for choosing S110 are processed using numerically-controlled machine tool, obtain several mechanical processing moldings
The flexible root canal file of Nitinol.
When the Nitinol wire rod chosen using numerically-controlled machine tool processing S110, it can obtain what several mechanical processings were molded
The flexible root canal file of Nitinol, the root canal file quantity processed are determined according to the length of the root canal file of machine-shaping.
S130, place is polished to the surface of the flexible root canal file of Nitinol of the mechanical processing molding obtained in S120
Reason.
S140, to the flexible root canal file of Nitinol after the polishing treatment that is obtained in S130 in 400 DEG C of holding furnace
50min is kept the temperature, then takes out and cools down in air, obtains golden root canal file.
S150, quality testing, including size detection, hardness determination and color detection are carried out to the root canal file after heat treatment.
S160, the root canal file after S150 quality testing qualifications install upper handle, form flexible pipe of Nitinol
File product.
It uses the hardness of the flexible root canal file of the Nitinol that above-mentioned heat treatment condition obtains for HV465, is surveyed using rotation
Fatigue life when test-run a machine tests fatigue resistance is 42 seconds, and color is gold, the size phase of the flexible root canal file of Nitinol
Than being basically unchanged before heat treatment, the flexible root canal file rigidity of Nitinol is basically unchanged.
Embodiment two
The heat treatment condition of the present embodiment and embodiment one the difference is that：Heat treatment temperature is 500 DEG C, when heat preservation
Between 50min, other experimental conditions are identical as embodiment one.
It uses the hardness of the flexible root canal file of the Nitinol that above-mentioned heat treatment condition obtains for HV440, is surveyed using rotation
Fatigue life when test-run a machine tests fatigue resistance is 55 seconds, and color is light blue, the size of the flexible root canal file of Nitinol
Compared to being basically unchanged before heat treatment, the flexible root canal file rigidity of Nitinol slightly declines.
Embodiment three
The heat treatment condition of the present embodiment and embodiment one the difference is that：Soaking time is 30min, heat treatment temperature
Degree is 500 DEG C, other experimental conditions are identical as the experimental condition of embodiment one.
It uses the hardness of the flexible root canal file of the Nitinol that above-mentioned heat treatment condition obtains for HV458, is surveyed using rotation
Fatigue life when test-run a machine test fatigue resistance is 35 seconds, and color is navy blue, the size of the flexible root canal file of Nitinol
Compared to being basically unchanged before heat treatment, the flexible root canal file of Nitinol is basically unchanged.
Example IV
The heat treatment condition of the present embodiment and embodiment one the difference is that：Heat treatment temperature is 450 DEG C, when heat preservation
Between be 70min, other experimental conditions are identical as the experimental condition of embodiment one.
It uses the hardness of the flexible root canal file of the Nitinol that above-mentioned heat treatment condition obtains for HV455, is surveyed using rotation
Fatigue life when test-run a machine tests fatigue resistance is 40s, and color is blue, and the size of the flexible root canal file of Nitinol is compared
It is basically unchanged before heat treatment, rigidity slightly declines before compared to heat treatment.
Comparative example one
The heat treatment condition of the present embodiment and embodiment one the difference is that：Heat treatment temperature is 390 DEG C, when heat preservation
Between be 50min, other experimental conditions are identical as the experimental condition of embodiment one.
It uses the hardness of the flexible root canal file of the Nitinol that above-mentioned heat treatment condition obtains for HV470, is surveyed using rotation
Fatigue life when test-run a machine tests fatigue resistance is 33 seconds, and color is gold, the size phase of the flexible root canal file of Nitinol
Than being basically unchanged before heat treatment, rigidity is basically unchanged before compared to heat treatment；Fatigue life is less than normal, does not use generally.
Comparative example two
The heat treatment condition of the present embodiment and embodiment one the difference is that：Heat treatment temperature is 510 DEG C, when heat preservation
Between be 50min, other experimental conditions are identical as the experimental condition of embodiment one.
Use the hardness of the flexible root canal file of the Nitinol that above-mentioned heat treatment condition obtains for HV430, color is pale blue
Color, the size of the flexible root canal file of Nitinol is compared to the 0.01mm that becomes smaller before heat treatment, the flexible root canal file of Nitinol
Rigidity slightly declines, and fatigue life when rotary tester being used to test fatigue resistance, hardness was less than normal for 60 seconds, easily occurs forever
Deformation long, does not use generally.
Comparative example three
The heat treatment condition of the present embodiment and embodiment one the difference is that：Heat treatment temperature is 450 DEG C, when heat preservation
Between be 25min, other experimental conditions are identical as the experimental condition of embodiment one.
Use the hardness of the flexible root canal file of the Nitinol that above-mentioned heat treatment condition obtains for HV460, color is pale blue
Color, compared to being basically unchanged before heat treatment, rigidity slightly declines the size of the flexible root canal file of Nitinol, is surveyed using rotation
Fatigue life when test-run a machine test fatigue resistance is 30 seconds, and fatigue life is less than normal, does not use generally.
Comparative example four
The heat treatment condition of the present embodiment and embodiment one the difference is that：Heat treatment temperature is 450 DEG C, when heat preservation
Between be 85min, other experimental conditions are identical as the experimental condition of embodiment one.
Use the hardness of the flexible root canal file of the Nitinol that above-mentioned heat treatment condition obtains for HV440, color is blue,
The size of the flexible root canal file of Nitinol is substantially unchanged compared to before heat treatment, and rigidity slightly declines, and is surveyed using rotation
Fatigue life when test-run a machine test fatigue resistance is 45 seconds, considers fatigue life and hardness, does not use generally.
Aforementioned four embodiment and four comparative examples are subjected to data comparison, referring in particular to table 1.
Table 1：The performance comparison table of the nickel titanium alloy root canal file obtained under Different Heat Treatment Conditions
By carrying out comparison discovery to the data in table 1, using the system of the flexible root canal file of Nitinol of the present invention
When Preparation Method prepares root canal file, in the identical feelings of other conditions for meeting identical soaking time and other than heat treatment temperature
Under condition, heat treatment temperature is higher, and hardness is smaller, and anti-fatigue life is longer；Meet identical heat treatment temperature and in addition to heat at
Manage temperature except other conditions it is identical in the case of, heat treatment time is longer, and hardness is smaller, and anti-fatigue life is longer.
Heat treatment temperature is between 400 DEG C -500 DEG C and when soaking time is within the scope of 30min-70min, with heat treatment
The raising of temperature, the martensite inside the extension root canal file of soaking time can gradually switch to austenite, rigidly have to a certain degree
Decline, hardness can become smaller, after soaking time is more than 70min, it may appear that permanent deformation；Fatigue resistance can with heat at
It manages the raising of temperature and enhances, but be more than after 500 DEG C in heat treatment temperature, fatigue resistance can be begun to decline, it may appear that be moulded
Property deformation.
Heat treatment temperature is between 400 DEG C -500 DEG C and when soaking time is within the scope of 30min-70min, with heat treatment
The raising of temperature, the martensite inside the extension root canal file of soaking time can gradually switch to austenite, rigidly have to a certain degree
Decline, hardness can become smaller, and be easier to will appear permanent deformation after soaking time is more than 70min, during use.
It being found through experiments that, when heat treatment temperature is 400 DEG C or so, the color of root canal file is gold after heat treatment, with
The rising of heat treatment temperature, the color of root canal file can gradually deepen after heat treatment, when heat treatment temperature reaches 450 DEG C of temperature,
The color of root canal file is blue after heat treatment, continues to rise with heat treatment temperature, and the color of root canal file can be by after heat treatment
Gradual change is shallow, can adjust heat treatment temperature to the color demand of root canal file according to client.After heat treatment the color of root canal file also by
The influence of heat treatment time, the time is longer, and color is deeper.
The preparation method of the flexible root canal file of Nitinol using the present invention can ensure that the rigidity of root canal file is stablized,
Hardness and fatigue life satisfy the use demand, the frequency that side is worn, stretched when greatly reducing curved root canal file flexible using Nitinol
Rate ensures to improve fatigue resistance under the premise of cutting power, shortens treatment time；And it can be according to the color need of root canal file
Seek the temperature and time of adjustment heat treatment appropriate.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and it is pair to be not
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
All any modification, equivalent and improvement etc., should be included in the claims in the present invention made by within the spirit and principle of invention
Protection domain within.
Claims (9)
1. a kind of preparation method of the flexible root canal file of Nitinol, which is characterized in that include the following steps：
The Nitinol wire rod of preset diameters is processed using numerically-controlled machine tool, obtains the Nitinol of several mechanical processing moldings
Flexible root canal file；
The surface of the flexible root canal file of Nitinol of mechanical processing molding is processed by shot blasting；
The flexible root canal file of Nitinol after polishing treatment is heat-treated.
2. the preparation method of the flexible root canal file of Nitinol according to claim 1, which is characterized in that choose default straight
The Nitinol wire rod of diameter, preset length, length of the preset length at least more than root canal file.
3. the preparation method of the flexible root canal file of Nitinol according to claim 1, which is characterized in that polishing will be passed through
Treated the flexible root canal file of Nitinol then takes out in 400 DEG C -500 DEG C of holding furnace inside holding 30min-70min
It is cooling in air.
4. the preparation method of the flexible root canal file of Nitinol according to claim 1, which is characterized in that through Overheating Treatment
The obtained flexible root canal file installation upper handle of Nitinol, forms the flexible root canal file product of Nitinol.
5. the preparation method of the flexible root canal file of Nitinol according to claim 1, which is characterized in that through Overheating Treatment
The color of the obtained flexible root canal file of Nitinol includes golden and blue.
6. the preparation method of the flexible root canal file of Nitinol according to claim 4, which is characterized in that in installation handle
It needs to carry out quality testing, including size detection, hardness to the flexible root canal file of Nitinol by being thermally treated resulting in before
Detection and color detection.
7. the preparation method of the flexible root canal file of Nitinol according to claim 1, which is characterized in that use polishing machine
The surface of the flexible root canal file of Nitinol of mechanical processing molding is processed by shot blasting.
8. the preparation method of the flexible root canal file of Nitinol according to claim 1, which is characterized in that the NiTi closes
Titanium atom percentage composition is 5%-15% in gold thread material.
9. the preparation method of the flexible root canal file of Nitinol according to claim 1 or 8, which is characterized in that the nickel
Nickle atom percentage composition is 50%-60% in titanium alloy wire.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111098101A (en) * | 2020-01-15 | 2020-05-05 | 江苏盛玛特新材料科技有限公司 | Novel root canal file processing technology and root canal file |
| CN111685897A (en) * | 2020-07-17 | 2020-09-22 | 山东鑫沈行新材料科技有限公司 | NiTi alloy root canal file with long fatigue life and process thereof |
| CN112007786A (en) * | 2020-08-28 | 2020-12-01 | 杨世梁 | Root canal file automatic production line |
| CN114734207A (en) * | 2022-04-14 | 2022-07-12 | 山东大学 | NiTi alloy surface cutting process and roughness adjusting method |
| CN115091126A (en) * | 2022-06-20 | 2022-09-23 | 成都市萨尼医疗器械有限公司 | Processing technology of low internal stress root canal file |
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| CN111098101A (en) * | 2020-01-15 | 2020-05-05 | 江苏盛玛特新材料科技有限公司 | Novel root canal file processing technology and root canal file |
| CN111098101B (en) * | 2020-01-15 | 2023-12-12 | 江苏盛玛特新材料科技有限公司 | Novel root canal file processing technology and root canal file |
| CN111685897A (en) * | 2020-07-17 | 2020-09-22 | 山东鑫沈行新材料科技有限公司 | NiTi alloy root canal file with long fatigue life and process thereof |
| CN112007786A (en) * | 2020-08-28 | 2020-12-01 | 杨世梁 | Root canal file automatic production line |
| CN114734207A (en) * | 2022-04-14 | 2022-07-12 | 山东大学 | NiTi alloy surface cutting process and roughness adjusting method |
| US11964337B2 (en) | 2022-04-14 | 2024-04-23 | Shandong University | NiTi alloy surface cutting process and roughness adjustment method |
| CN115091126A (en) * | 2022-06-20 | 2022-09-23 | 成都市萨尼医疗器械有限公司 | Processing technology of low internal stress root canal file |
| CN115091126B (en) * | 2022-06-20 | 2024-03-01 | 成都市萨尼医疗器械有限公司 | Processing technology of low internal stress root canal file |
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Application publication date: 20181113 |