CN114903625B - Dental orthodontic bracket made of chemically reinforced glass and manufacturing method thereof - Google Patents
Dental orthodontic bracket made of chemically reinforced glass and manufacturing method thereof Download PDFInfo
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- CN114903625B CN114903625B CN202210424157.1A CN202210424157A CN114903625B CN 114903625 B CN114903625 B CN 114903625B CN 202210424157 A CN202210424157 A CN 202210424157A CN 114903625 B CN114903625 B CN 114903625B
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- 239000011521 glass Substances 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 239000000126 substance Substances 0.000 claims abstract description 9
- 238000000465 moulding Methods 0.000 claims description 25
- 238000003825 pressing Methods 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 13
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 239000005345 chemically strengthened glass Substances 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- 238000000137 annealing Methods 0.000 claims description 6
- 239000000156 glass melt Substances 0.000 claims description 6
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 5
- 239000012943 hotmelt Substances 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000000748 compression moulding Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 235000010333 potassium nitrate Nutrition 0.000 claims description 3
- 239000004323 potassium nitrate Substances 0.000 claims description 3
- 230000008646 thermal stress Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 238000007788 roughening Methods 0.000 claims description 2
- 238000003426 chemical strengthening reaction Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 7
- 239000013078 crystal Substances 0.000 abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 6
- 239000000919 ceramic Substances 0.000 abstract description 5
- 239000005368 silicate glass Substances 0.000 abstract description 5
- 239000010935 stainless steel Substances 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910018068 Li 2 O Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 210000004513 dentition Anatomy 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C7/00—Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
- A61C7/12—Brackets; Arch wires; Combinations thereof; Accessories therefor
- A61C7/28—Securing arch wire to bracket
- A61C7/34—Securing arch wire to bracket using lock pins
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B11/00—Pressing molten glass or performed glass reheated to equivalent low viscosity without blowing
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B25/00—Annealing glass products
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
- C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
- C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
- C03C3/083—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound
- C03C3/085—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal
- C03C3/087—Glass compositions containing silica with 40% to 90% silica, by weight containing aluminium oxide or an iron compound containing an oxide of a divalent metal containing calcium oxide, e.g. common sheet or container glass
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Manufacturing & Machinery (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Dental Preparations (AREA)
Abstract
The invention discloses a dental orthodontic bracket manufactured by adopting chemically reinforced glass and a manufacturing method thereof. The high-alumina silicate glass is selected, the raw material has high purity, high transparency, good strength and good chemical stability, and the self strength of the high-alumina silicate glass can be greatly improved after chemical enhancement. The brackets of the present invention provide nearly all of the advantages of stainless steel, single crystal and ceramic brackets: such as small size, beautiful appearance, high hardness, high strength, firm adhesion, easy detachment, etc., and overcomes the respective defects thereof. The manufacturing method of the invention can manufacture brackets with various specifications and shapes at one time, including all-transparent self-locking brackets which are not commercially available at present. The invention has simple and practical manufacture and is easy to realize automatic production.
Description
Technical Field
The invention relates to the field of medical appliances, in particular to a dental orthodontic bracket manufactured by adopting chemically reinforced glass and a manufacturing method thereof.
Background
The dental orthodontic bracket is a very popular medical instrument, and can be used for tens of millions of pairs aiming at the symptoms of irregular dentition and the like. Orthodontic brackets come in a wide variety of sizes, with and without self-locking function being a very important distinction. The self-locking bracket has good treatment effect, is convenient to use, is deeply liked by doctors, and has market price far higher than that of the bracket without self-locking function.
Currently, the materials of the commercially available orthodontic brackets are mainly three types of stainless steel, alumina ceramics and alumina single crystals. The brackets made of the three materials have the advantages and disadvantages: the stainless steel bracket has low manufacturing cost, small size, firm bonding and easy detachment, but the color of the stainless steel bracket is not attractive and is abandoned by patients; the ceramic bracket is generally semitransparent, is more fit with the color of teeth, has attractive appearance, but has difficult mechanical strength and transparency, is easy to break wings, integrally fall off, is difficult to detach and the like in the treatment process, and has unstable product quality; the single crystal bracket is beautiful because of its full transparency and has good strength and hardness, but the single crystal bracket is processed by mechanical polishing, laser cutting and other processing means, so the processing cost is high and the production efficiency is low. Heretofore, no single-crystal finished self-ligating bracket has been commercially available, because the shape of the self-ligating bracket is relatively complex and the excessive production cost makes it difficult to participate in the market competition.
Disclosure of Invention
The invention aims to overcome the problems and provide a dental orthodontic bracket manufactured by using chemically reinforced glass and a manufacturing method thereof. In order to achieve the above purpose, the invention adopts the following technical scheme:
a dental orthodontic bracket made of chemically strengthened glass, the bracket being made of chemically strengthened glass.
The invention also discloses a pressing die of the dental orthodontic bracket manufactured by adopting the chemically reinforced glass, wherein the die adopts a half die form and comprises a lower die plate, a left upper die plate and a right upper die plate, two sides of the lower die plate are provided with baffle plates, the baffle plates are fixedly connected with the lower die plate through fixing screws, the left upper die plate and the right upper die plate are provided with protruding parts and push-pull rods, the baffle plates are provided with limit slotted holes matched with the protruding parts, and the left upper die plate and the right upper die plate slide along the limit slotted holes by moving the push-pull rods;
the lower die plate, the left upper die plate and the right upper die plate enclose a die cavity of the bracket, a filler rod is arranged in the die cavity, an upper pressure head module is arranged at the top of the die cavity, a die core is arranged at the position, corresponding to the bottom of the die cavity, of the lower die plate, and a filler rod seam for clamping the filler rod is formed in the die core.
As an improvement, the bottom of the upper pressure head module is in a convex arc surface shape.
As an improvement, the embedded strip is in a straight plate shape or is also provided with a push plate embedded strip and a round hole embedded strip at the side part.
The invention also discloses a manufacturing method of the dental orthodontic bracket manufactured by adopting the chemically reinforced glass, wherein the bracket is manufactured by adopting a hot melt compression molding method, and the specific method comprises the following steps of:
s1, glass melting
Melting the glass material in a crucible with the temperature of 1250 ℃ or higher;
s2, feeding
Cutting a section of glass drop by scissors according to the required quantity on a drop feeder connected with a crucible discharge hole, and then rapidly falling onto a die cavity of a pressing die for pressing and forming; heating and preserving heat of the lower template, the mold core, the left upper template and the right upper template during feeding;
s3, pressing by using a die
Inserting a molding strip into a molding strip seam of the mold core, and closing the mold; after the glass melt is sent into the die cavity, the upper pressure head module is quickly pressed down to a preset position, so that the glass melt fills the die cavity, and the pressing action is completed; the press forming adopts a flash mode, so that the glass melting material in the die cavity is prevented from being excessively quickly lost in temperature;
s4, acid etching removal of embedded strips
The embedded strip is made of metal; after the bracket is pressed and molded, the bracket and the embedded strip are immersed into high-concentration hydrochloric acid; taking out the bracket after the embedded strip is etched, cleaning and drying;
s5, annealing
Maintaining the temperature at the annealing point of the glass for 20 minutes to eliminate the thermal stress generated during molding;
s6, chemical enhancement
Immersing the annealed bracket into a potassium nitrate solution heated to 420 ℃ and keeping the bracket for more than 12 hours;
as improvement, the bracket is subjected to bottom roughening treatment after being subjected to acid etching in the step S5, and the concrete method is to soak the bottom of the bracket for 3-8 hours by using hydrofluoric acid.
As an improvement, the bracket is plated with a transparent hard film after S6 chemical reinforcement.
As an improvement, the bottom of the bracket is provided with an arc surface matched with teeth, and the arc surface is concave-convex, smooth or roughened by corrosion of hydrofluoric acid.
The invention has the advantages that:
1. the high-alumina silicate glass is selected, the raw material has high purity, high transparency, good strength and good chemical stability, and the self strength of the high-alumina silicate glass can be greatly improved after chemical enhancement. The brackets of the present invention provide nearly all of the advantages of stainless steel, single crystal and ceramic brackets: such as small size, beautiful appearance, high hardness, high strength, firm adhesion, easy detachment, etc., and overcomes the respective defects thereof.
2. The manufacturing method of the invention can manufacture brackets with various specifications and shapes at one time, including all-transparent self-locking brackets which are not commercially available at present. The invention has simple and practical manufacture and is easy to realize automatic production.
Drawings
FIG. 1 is a top view of the bracket of example 1;
FIG. 2 is a front view of the bracket of example 1;
FIG. 3 is a structural view of the mold in example 1;
FIG. 4 is a cross-sectional view of the mold in example 1;
FIG. 5 is a block diagram of a molding in example 1;
FIG. 6 is a structural view of the bracket of example 2;
FIG. 7 is a top view of the bracket of example 2;
FIG. 8 is a block diagram of a self-locking push plate in example 2;
FIG. 9 is a block diagram of a molding in example 2;
fig. 10 is a structural view of the bracket in example 2.
The figures indicate:
the self-locking mold comprises a lower mold plate 1, an upper left mold plate 2, an upper right mold plate 3, a mold core 4, a mold core 5, a straight plate 51, a push plate molding 52, a round hole molding 53, an upper pressure head module 6, a molding slot 7, a push-pull rod 8, a baffle 9, a fixing screw 91, a limit slot 92, a self-locking push plate 10, a slide groove 11 and a round hole 12.
Detailed Description
The present invention will be described in detail and specifically by way of the following examples, which are not intended to limit the scope of the present invention.
Example 1
The embodiment discloses a dental orthodontic bracket made of chemically reinforced glass.
The bracket is made of chemically reinforced glass. The bottom of the supporting groove is provided with a cambered surface matched with teeth, and the cambered surface is roughened by corrosion of hydrofluoric acid.
The embodiment also discloses a pressing die of the dental orthodontic bracket manufactured by adopting the chemically reinforced glass.
The mould adopts half mould form, including lower bolster 1, left cope match-plate pattern 2 and right cope match-plate pattern 3, and the lower bolster both sides are equipped with baffle 9, and baffle 9 passes through set screw 91 and lower bolster 1 fixed connection. The left upper template 2 and the right upper template 3 are provided with protruding parts and a push-pull rod 8, the baffle 9 is provided with limiting slotted holes 92 matched with the protruding parts, and the left upper template 2 and the right upper template 3 slide along the limiting slotted holes 92 by moving the push-pull rod 8.
The lower template 1, the left upper template 2 and the right upper template 3 enclose a die cavity of the bracket, a molding strip 5 is arranged in the die cavity, an upper pressure head module 6 is arranged at the top of the die cavity, a die core 4 is arranged at the position of the lower template 1 corresponding to the bottom of the die cavity, and a molding strip seam 7 for clamping the molding strip 5 is arranged on the die core 4.
The bottom of the upper pressure head module 6 is in a convex cambered surface shape, so that the bottom of the supporting groove can form a cambered surface during press forming.
In this embodiment, the molding 5 has a straight plate shape.
The invention also discloses a method for manufacturing the dental orthodontic bracket manufactured by adopting the chemically reinforced glass, wherein the bracket is manufactured by adopting a hot melt compression molding method, and the method specifically comprises the following steps of:
s1, glass melting
The embodiment adopts high alumina silicate glass, and the components are as follows: 5% Na 2 O、2％CaO、7％Al 2 O 3 、73％SiO 2 Other 3% ZrO 2 、ZnO、Li 2 O。
The glass material is put into a crucible with the temperature of more than 1250 ℃ to be melted, and the viscosity of the glass material is log3-4 dPa.s, so that the glass material has better fluidity and can be ensured to smoothly flow out from a discharge hole.
S2, feeding
Cutting a section of glass drop by scissors according to the required quantity on a drop feeder connected with a crucible discharge hole, and then rapidly falling onto a die cavity of a pressing die for pressing and forming; and during feeding, the lower template, the mould core, the left upper template and the right upper template are heated and insulated, and the temperature of the mould cavity is kept at about 700-750 ℃.
S3, pressing by using a die
Inserting a molding strip into a molding strip seam of the mold core, and closing the mold; after the glass melt is sent into the die cavity, the upper pressure head module is quickly pressed down to a preset position, so that the glass melt fills the die cavity, and the pressing action is completed; the press forming adopts a flash mode, so that the glass melting material in the die cavity is prevented from being excessively quickly lost in temperature;
s4, acid etching removal of embedded strips
The fillet is made of common iron material; after the bracket is pressed and molded, the bracket and the embedded strip are immersed into high-concentration hydrochloric acid; taking out the bracket after the embedded strip is etched, cleaning and drying;
s5, annealing
Maintaining the temperature at the annealing point of the glass for 20 minutes to eliminate the thermal stress generated during molding;
s5-1, bottom texturing treatment
The bottom of the bracket is soaked in hydrofluoric acid for 3-8 hours, so that the bottom of the bracket can be roughened sufficiently to improve the bonding fastness;
s6, chemical enhancement
Immersing the annealed bracket into a potassium nitrate solution heated to 420 ℃ for more than 12 hours. The product can generate a diffusion layer with K ion concentration from high to low from the surface to the inside, and the thickness of the diffusion layer can reach more than 100 um. The strength of the reinforced glass bracket can generally reach more than 5-6 times of the original strength after the reinforced glass bracket is chemically reinforced, and the requirement on the bracket strength in orthodontic treatment can be fully met;
s6-1, plating a transparent hard film after chemical reinforcement
Plating a layer of ZrO2 ceramic film by adopting a PVD method; the thickness of the film is 100nm and HV1500. The high hardness of the alloy not only improves the wear resistance of the glass bracket, but also provides an ultralow friction coefficient for the stainless steel wire and the nickel-titanium alloy wire, thereby effectively shortening the time of correction treatment.
Example 2
The embodiment discloses a passive self-locking bracket.
In this embodiment, the top of the bracket is provided with a self-locking push plate 10, and a corresponding chute 11 for installing the self-locking push plate and a small round hole 12 in the chute 11 are arranged on the bracket. A high-elasticity filament is arranged in the small round hole 12. The bottom of the self-locking push plate 10 is provided with a groove for accommodating high-elasticity filaments, and the high-elasticity filaments are respectively connected with the bottom of the small round hole 10 and the bottom of the self-locking push plate 10 so as to achieve the purpose of self-locking.
The molding 5 of the present embodiment includes a straight plate 51 and a push plate molding 52 and a circular hole molding 53 provided on the side of the straight plate 51. So that the chute 11 and the small round hole 12 are formed in the bracket at the time of press molding.
Other technical solutions of this embodiment are the same as those of embodiment 1.
The above description of the specific embodiments of the present invention is given by way of example only, and the present invention is not equivalent to the above-described specific embodiments. Any equivalent modifications and substitutions for the present invention will occur to those skilled in the art, and are also within the scope of the present invention. Accordingly, equivalent changes and modifications to the disclosed embodiments are intended to be included within the scope of the present invention.
Claims (6)
1. The manufacturing method of the dental orthodontic bracket manufactured by adopting the chemically reinforced glass is characterized in that the bracket is formed by adopting the following hot melt pressing die:
the hot melt pressing die adopts a half die form and comprises a lower die plate, a left upper die plate and a right upper die plate, wherein baffle plates are arranged on two sides of the lower die plate and fixedly connected with the lower die plate through fixing screws, protruding parts and push-pull rods are arranged on the left upper die plate and the right upper die plate, limit slotted holes matched with the protruding parts are formed in the baffle plates, and the left upper die plate and the right upper die plate slide along the limit slotted holes by moving the push-pull rods;
the lower die plate, the left upper die plate and the right upper die plate enclose a die cavity of the bracket, a molding is arranged in the die cavity, an upper pressure head module is arranged at the top of the die cavity, a die core is arranged at the position, corresponding to the bottom of the die cavity, of the lower die plate, and a molding slot for clamping the molding is arranged on the die core;
the specific method for compression molding by using the hot melt compression mold comprises the following steps:
s1, glass melting
Melting the glass material in a crucible with the temperature of 1250 ℃ or higher;
s2, feeding
Cutting a section of glass drop by scissors according to the required quantity on a drop feeder connected with a crucible discharge hole, and then rapidly falling onto a die cavity of a pressing die for pressing and forming; heating and preserving heat of the lower template, the mold core, the left upper template and the right upper template during feeding;
s3, pressing by using a die
Inserting a molding strip into a molding strip seam of the mold core, and closing the mold; after the glass melt is sent into the die cavity, the upper pressure head module is quickly pressed down to a preset position, so that the glass melt fills the die cavity, and the pressing action is completed; the press forming adopts a flash mode, so that the glass melting material in the die cavity is prevented from being excessively quickly lost in temperature;
s4, acid etching removal of embedded strips
The embedded strip is made of metal; after the bracket is pressed and molded, the bracket and the embedded strip are immersed into high-concentration hydrochloric acid; taking out the bracket after the embedded strip is etched, cleaning and drying;
s5, annealing
Maintaining the temperature at the annealing point of the glass for 20 minutes to eliminate the thermal stress generated during molding;
s6, chemical enhancement
Immersing the annealed bracket into a potassium nitrate solution heated to 420 ℃ for more than 12 hours.
2. The method for manufacturing a dental orthodontic bracket using chemically strengthened glass according to claim 1, wherein the bottom of the upper indenter module is in the shape of a convex arc.
3. The method of manufacturing a bracket for dental orthodontics using chemically strengthened glass according to claim 1, wherein the fillet is in a straight plate shape or a push plate fillet and a round hole fillet are further provided at a side portion.
4. The method for manufacturing a bracket for dental orthodontics made of chemically strengthened glass according to claim 1, wherein the bracket is subjected to bottom roughening treatment after the step S5 of acid etching, specifically by immersing the bottom of the bracket in hydrofluoric acid for 3-8 hours.
5. The method of manufacturing a dental orthodontic bracket using chemically strengthened glass according to claim 1, wherein the bracket is coated with a transparent hard film after S6 chemical strengthening.
6. The method for manufacturing a dental orthodontic bracket made of chemically strengthened glass according to claim 1, wherein the bottom of the bracket manufactured by the method is provided with an arc surface matched with teeth, and the arc surface is concave-convex, smooth or roughened by corrosion with hydrofluoric acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210424157.1A CN114903625B (en) | 2022-04-21 | 2022-04-21 | Dental orthodontic bracket made of chemically reinforced glass and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210424157.1A CN114903625B (en) | 2022-04-21 | 2022-04-21 | Dental orthodontic bracket made of chemically reinforced glass and manufacturing method thereof |
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| Publication Number | Publication Date |
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| CN114903625A CN114903625A (en) | 2022-08-16 |
| CN114903625B true CN114903625B (en) | 2023-10-27 |
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| SU846044A1 (en) * | 1979-05-31 | 1981-07-15 | Московский Автомеханический Инсти-Тут | Apparatus for hot deforming |
| US5221202A (en) * | 1991-04-12 | 1993-06-22 | James Jack L | Packaging and adhesive for predispensed orthodontic brackets |
| EP2604218A1 (en) * | 2011-12-16 | 2013-06-19 | 3M Innovative Properties Company | Mold and method for making a customized orthodontic bracket, and method of making the mold |
| CN107320341A (en) * | 2017-06-27 | 2017-11-07 | 首都医科大学附属北京口腔医院 | Self-acid-etching orthodontic sealant and application thereof |
| KR20180037939A (en) * | 2018-04-06 | 2018-04-13 | 주식회사 메가젠임플란트 | Manufacturing method of water glass coating fixture |
| CN216324328U (en) * | 2021-10-25 | 2022-04-19 | 金成技术股份有限公司 | Regulation formula groove structure stamping device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6485849B2 (en) * | 1994-05-31 | 2002-11-26 | Tec Ventures, Inc. | Method for molding dental restorations and related apparatus |
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2022
- 2022-04-21 CN CN202210424157.1A patent/CN114903625B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU846044A1 (en) * | 1979-05-31 | 1981-07-15 | Московский Автомеханический Инсти-Тут | Apparatus for hot deforming |
| US5221202A (en) * | 1991-04-12 | 1993-06-22 | James Jack L | Packaging and adhesive for predispensed orthodontic brackets |
| EP2604218A1 (en) * | 2011-12-16 | 2013-06-19 | 3M Innovative Properties Company | Mold and method for making a customized orthodontic bracket, and method of making the mold |
| CN107320341A (en) * | 2017-06-27 | 2017-11-07 | 首都医科大学附属北京口腔医院 | Self-acid-etching orthodontic sealant and application thereof |
| KR20180037939A (en) * | 2018-04-06 | 2018-04-13 | 주식회사 메가젠임플란트 | Manufacturing method of water glass coating fixture |
| CN216324328U (en) * | 2021-10-25 | 2022-04-19 | 金成技术股份有限公司 | Regulation formula groove structure stamping device |
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