CN102551904A - Dental magnetic retainer - Google Patents
Dental magnetic retainer Download PDFInfo
- Publication number
- CN102551904A CN102551904A CN2010105806957A CN201010580695A CN102551904A CN 102551904 A CN102551904 A CN 102551904A CN 2010105806957 A CN2010105806957 A CN 2010105806957A CN 201010580695 A CN201010580695 A CN 201010580695A CN 102551904 A CN102551904 A CN 102551904A
- Authority
- CN
- China
- Prior art keywords
- stainless steel
- yoke
- magnetic
- nickel
- soft magnetism
- 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.)
- Pending
Links
Images
Abstract
The invention belongs to the technical field of dental prosthesis and medical instrument, specifically relates to a dental magnetic retainer, and solves problems in the prior art, such as potential hazards, low bonding strength of the retainer assembly, easily-shedding phenomenon and the like. Nickel-free corrosion-resistant ferrite soft-magnetic stainless steel is made into a T-shaped cup-shaped magnetic yoke. A rare earth neodymium iron boron permanent magnet is placed in the magnetic yoke and closely joins with the recess at the bottom of the magnetic yoke. A high-nitrogen nickel-free austenite nonmagnetic stainless steel round thin sheet is embedded into the T-shaped cup-shaped magnet yoke, tightly joints with the other surface of the magnet, and forms a plane with the open end of the magnetic yoke. The circumferential slit is sealed by microcell laser beam welding. The T-shaped cup-shaped magnet yoke for wrapping the permanent magnet and the nickel-free corrosion-resistant ferrite soft-magnetic stainless steel armature embedded in tooth root form the dental magnetic retainer in one closed magnetic circuit. Strong magnetic attraction generated from the rare earth neodymium iron boron permanent magnet is used for retaining oral false tooth. The invention relates to a dental false tooth magnetic retainer which is nontoxic, harmless, cheap and reliable and has strong practicality.
Description
Technical field:
The invention belongs to stomatology reparation and technical field of medical instruments, be specially a kind of tooth and use magnetic attachment, adopt rare-earth Nd-Fe-B permanent magnet to produce strong magnetic attraction, be used for the maintenance of oral artificial tooth.
Background technology:
Along with the raising of China's living standards of the people, aged tendency of population increases day by day, and oral cavity health is paid attention to by People more and more, along with the progress of stomatology recovery technique and medical device technology, will bring happiness and health to people.At present, the tooth of extensive use uses the denture retention body to enter group day at the product that advances the dental material company limited day of Chinese individual proprietorship as Amada Co., Ltd., and this product is repeatedly applied for a patent, and certain market is arranged at home.Shortcoming: complex process, product percent of pass are low, and cost is high, expensive, come off easily, stainless steel material contains that the people is had the potential hazard elemental nickel, are difficult for large-scale popularization and use.Domestic magnetic attachment or magnetic fastening body for dental product do not adopt laser weld basically, only make the bonding agent of denture retention body with strength adhesive, mostly do not obtain practical application.Shortcoming: retainer assembly bond strength is low, and sealing is poor, and the binding agent magnetic resistance is big, and maintenance power is poor, is difficult to approved by market.
Summary of the invention:
The object of the present invention is to provide a kind of nontoxic, cheap reliable and practical tooth use magnetic attachment, problem such as solve the potential hazard, the cost height that exist in the prior art, retainer assembly bond strength is low and be prone to come off.
Technical scheme of the present invention is:
A kind of tooth is used magnetic attachment; This tooth is provided with the armature of T type cup-shaped soft magnetism ferritic stainless steel yoke, rare-earth Nd-Fe-B permanent magnet, high nitrogen and nickel-less austenitic stainless steel thin discs and soft magnetism ferritic stainless steel disk with magnetic attachment; Rare-earth Nd-Fe-B permanent magnet places in the T type cup-shaped soft-magnetic stainless steel yoke; The one side of rare-earth Nd-Fe-B permanent magnet fits tightly with T type cup-shaped soft magnetism ferritic stainless steel yoke recess plane; The another side of rare-earth Nd-Fe-B permanent magnet fits tightly with the high nitrogen and nickel-less austenitic stainless steel thin discs that embeds T type cup-shaped soft magnetism ferritic stainless steel yoke; The circumferential opening end face of T type cup-shaped soft magnetism ferritic stainless steel yoke and the high nitrogen and nickel-less austenitic stainless steel thin discs of embedding constitute the plane, and the armature of this plane and soft magnetism ferritic stainless steel disk fits tightly, and form closed magnetic circuit.
Described tooth is used magnetic attachment, and T type cup-shaped yoke is structure as a whole or divides body structure.
Described tooth is used magnetic attachment; T type cup-shaped yoke is when dividing body structure; The plane is formed at the peripheral end of nickelles stainless steel annulus and round cup-shaped soft magnetism ferritic stainless steel yoke, and the gap of nickelles stainless steel annulus and round cup-shaped soft magnetism ferritic stainless steel yoke is connected into T type cup-shaped yoke through the microcell Laser Welding.
Described tooth is used magnetic attachment, and the nickelles stainless steel annulus is that soft magnetism ferritic stainless steel annulus or high-nitrogen nickel-free do not have the magnetic austenitic stainless steel annulus.
Described tooth is used magnetic attachment; The plane that the circumferential opening end face of T type cup-shaped soft magnetism ferritic stainless steel yoke and the high nitrogen and nickel-less austenitic stainless steel thin discs of embedding constitute; This planar circumferential gap is through the microcell laser welded seal, and it is fit to constitute seal group.
Described tooth is used magnetic attachment, and the composition of high nitrogen and nickel-less austenitic stainless steel is: 00Fe17Cr15Mn2Mo (0.45～0.7) N.
Advantage of the present invention and beneficial effect are:
1, the external form of magnetic attachment adopts T type cup-shaped soft-magnetic stainless steel yoke, has strengthened the bond strength of magnetic attachment and corona, and the magnetic attachment that solves is in the past chewed easy obscission in the process.
2, the combination of magnetic circuit becomes single nickel-less austenitic stainless steel disk by the disk of original center soft-magnetic stainless steel sequin and ring-type magnetism-free stainless steel precision-fit, saves a circle welding sequence, and technology is simple, and product qualified rate improves.
3, substitute the SUS316L nickel austenite stainless steel with medical high nitrogen and nickel-less austenitic stainless steel, whole magnetic attachment material is constituted develop to nontoxic biomaterial direction.
4, medical high nitrogen and nickel-less austenitic stainless steel (BIONFSS) be Metal Inst., Chinese Academy of Sciences be directed against medical austenitic stainless steel (like 304L, 316L etc.) clinically extensive use property and wherein contain the potential hazard property of nickel element; A kind of novel non-nickel austenitic stainless steel material with good comprehensive mechanical property and good corrosion resistance ability of developing, its nominal composition is: 00Fe17Cr15Mn2Mo (0.45～0.7) N (granted patent: ZL 03110896.2).The tissue of medical high nitrogen and nickel-less austenitic stainless steel, mechanical property, cold deformation performance, corrosion resisting property, corrosion fatigue resistant performance, wear-corrosion resistance; And multinomial performance and the characteristic tests such as bio-compatibility that comprise cytotoxicity, sensitization, haemolysis, platelet adhesion reaction and thrombin activation; Show this material aspect mechanical property, corrosion resisting property and bio-compatibility, all be superior to clinical widely used medical 316L austenitic stainless steel at present.
5, the microcell laser welding process is all adopted in the cooperation slit between two kinds of stainless steel materials of composition magnetic attachment, good airproof performance, and corrosion resistance is strong, and adhesion is good and intensity high.
6, the magnetic Circuit Design of closure, leakage field is few, and suction is big.
In a word, magnetic attachment of the present invention is nontoxic, and leakage field is little, and maintenance power is strong; Corrosion resistance is good, and intensity is high, and wearability is good; Technology is simple, good airproof performance, and product percent of pass is high; The retainer external form is a T type structure, and difficult drop-off is practical; Compare with external product, the present invention has breakthrough on material and technology, for nontoxic, cheap reliable, practical tooth is used Denture attachment.
Description of drawings:
Fig. 1 for tooth with one of magnetic attachment structural representation.
Fig. 2 for tooth with two of magnetic attachment structural representation.
Among the figure, 1, T type cup-shaped soft magnetism ferritic stainless steel yoke; 2, rare-earth Nd-Fe-B permanent magnet; 3, high nitrogen and nickel-less austenitic stainless steel thin discs; 4, microcell laser welded seal; 5, the armature of soft magnetism ferritic stainless steel disk; 6, nickelles stainless steel annulus; 7, round cup-shaped soft magnetism ferritic stainless steel yoke.
The specific embodiment:
Embodiment 1:
As shown in Figure 1, in the present embodiment, tooth is made up of the armature 5 of T type cup-shaped soft magnetism ferritic stainless steel yoke 1, rare-earth Nd-Fe-B permanent magnet 2, high nitrogen and nickel-less austenitic stainless steel thin discs 3 and soft magnetism ferritic stainless steel disk with magnetic attachment.The high-coercive force of certain size, the rare-earth Nd-Fe-B permanent magnet of high energy product 2 are put into T type cup-shaped soft-magnetic stainless steel yoke 1; The one side of rare-earth Nd-Fe-B permanent magnet 2 fits tightly with T type cup-shaped soft magnetism ferritic stainless steel yoke 1 recess plane; The another side of rare-earth Nd-Fe-B permanent magnet 2 fits tightly with the high nitrogen and nickel-less austenitic stainless steel thin discs 3 that embeds T type cup-shaped soft magnetism ferritic stainless steel yoke 1; The circumferential opening end face of T type cup-shaped soft magnetism ferritic stainless steel yoke 1 and the high nitrogen and nickel-less austenitic stainless steel thin discs of embedding 3 constitute a plane; Planar circumferential gap constitutes anti-corrosion, a wear-resisting seal group zoarium that is wrapped in magnet with microcell laser welded seal 4.Then, this face of weld polishes and polishes, and fits tightly with the armature 5 of soft magnetism ferritic stainless steel disk, constitutes a closed magnetic circuit, forms no nickel (no potential danger), cheap reliable, practical tooth is used Denture attachment.
The composition of said high nitrogen and nickel-less austenitic stainless steel is: 00Fe17Cr15Mn2Mo (0.45～0.7) N.
Embodiment 2:
As shown in Figure 2; In the present embodiment, tooth is made up of the armature 5 and the nickelles stainless steel annulus 6 (soft magnetism ferritic stainless steel or high-nitrogen nickel-free do not have magnetic austenitic stainless steel) of round cup-shaped soft magnetism ferritic stainless steel yoke 7, rare-earth Nd-Fe-B permanent magnet 2, high nitrogen and nickel-less austenitic stainless steel thin discs 3, soft magnetism ferritic stainless steel disk with magnetic attachment.With embodiment 1 same process; The high-coercive force of certain size, the rare-earth Nd-Fe-B permanent magnet of high energy product 2 are put into round cup-shaped soft magnetism ferritic stainless steel yoke 7; The one side of rare-earth Nd-Fe-B permanent magnet 2 fits tightly with round cup-shaped soft magnetism ferritic stainless steel yoke 7 recess planes; The another side of rare-earth Nd-Fe-B permanent magnet 2 fits tightly with the high nitrogen and nickel-less austenitic stainless steel thin discs 3 that embeds round cup-shaped soft magnetism ferritic stainless steel yoke 7; The circumferential opening end face of round cup-shaped soft magnetism ferritic stainless steel yoke 7 and the high nitrogen and nickel-less austenitic stainless steel thin discs of embedding 3 constitute a plane; Planar circumferential gap constitutes anti-corrosion, a wear-resisting seal group zoarium that is wrapped in magnet with microcell laser welded seal 4.Then, this face of weld polishes and polishes, and fits tightly with the armature 5 of soft magnetism ferritic stainless steel disk, constitutes a closed magnetic circuit.At last; Nickelles stainless steel annulus 6 is formed a plane with the 7 peripheral ends of round cup-shaped soft magnetism ferritic stainless steel yoke; Two kinds of material gaps are connected into T type cup-shaped yoke with the microcell Laser Welding, use Denture attachment with the no nickel of composition (no potential danger) such as armature 5 of soft magnetism ferritic stainless steel disk, cheap reliable, practical tooth.Directly make T type tooth than embodiment 1 and use magnetic fastening body for dental, convenient and easier on the technology.
The composition of said high nitrogen and nickel-less austenitic stainless steel is: 00Fe17Cr15Mn2Mo (0.45～0.7) N.
Claims (6)
1. a tooth is used magnetic attachment; It is characterized in that: this tooth is provided with the armature of T type cup-shaped soft magnetism ferritic stainless steel yoke, rare-earth Nd-Fe-B permanent magnet, high nitrogen and nickel-less austenitic stainless steel thin discs and soft magnetism ferritic stainless steel disk with magnetic attachment; Rare-earth Nd-Fe-B permanent magnet places in the T type cup-shaped soft-magnetic stainless steel yoke; The one side of rare-earth Nd-Fe-B permanent magnet fits tightly with T type cup-shaped soft magnetism ferritic stainless steel yoke recess plane; The another side of rare-earth Nd-Fe-B permanent magnet fits tightly with the high nitrogen and nickel-less austenitic stainless steel thin discs that embeds T type cup-shaped soft magnetism ferritic stainless steel yoke; The circumferential opening end face of T type cup-shaped soft magnetism ferritic stainless steel yoke and the high nitrogen and nickel-less austenitic stainless steel thin discs of embedding constitute the plane; The armature of this plane and soft magnetism ferritic stainless steel disk fits tightly, and forms closed magnetic circuit.
2. use magnetic attachment according to the described tooth of claim 1, it is characterized in that: T type cup-shaped yoke is structure as a whole or divides body structure.
3. use magnetic attachment according to the described tooth of claim 2; It is characterized in that: T type cup-shaped yoke is when dividing body structure; The plane is formed at the peripheral end of nickelles stainless steel annulus and round cup-shaped soft magnetism ferritic stainless steel yoke, and the gap of nickelles stainless steel annulus and round cup-shaped soft magnetism ferritic stainless steel yoke is connected into T type cup-shaped yoke through the microcell Laser Welding.
4. use magnetic attachment according to the described tooth of claim 3, it is characterized in that: the nickelles stainless steel annulus is that soft magnetism ferritic stainless steel annulus or high-nitrogen nickel-free do not have the magnetic austenitic stainless steel annulus.
5. use magnetic attachment according to the described tooth of claim 1; It is characterized in that: the plane that the circumferential opening end face of T type cup-shaped soft magnetism ferritic stainless steel yoke and the high nitrogen and nickel-less austenitic stainless steel thin discs of embedding constitute; This planar circumferential gap is through the microcell laser welded seal, and it is fit to constitute seal group.
6. use magnetic attachment according to claim 1 or 5 described teeth, it is characterized in that: the composition of high nitrogen and nickel-less austenitic stainless steel is: 00Fe17Cr15Mn2Mo (0.45～0.7) N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105806957A CN102551904A (en) | 2010-12-09 | 2010-12-09 | Dental magnetic retainer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105806957A CN102551904A (en) | 2010-12-09 | 2010-12-09 | Dental magnetic retainer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102551904A true CN102551904A (en) | 2012-07-11 |
Family
ID=46399400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105806957A Pending CN102551904A (en) | 2010-12-09 | 2010-12-09 | Dental magnetic retainer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102551904A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103860280A (en) * | 2012-12-11 | 2014-06-18 | 中国科学院金属研究所 | False tooth magnetic retainer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1519387A (en) * | 2003-01-20 | 2004-08-11 | 中国科学院金属研究所 | Embedded material of austenitic stainless steel in medical use |
| CN1750798A (en) * | 2003-02-17 | 2006-03-22 | 爱知制钢株式会社 | Denture magnetic attachment |
| CN1791367A (en) * | 2003-09-05 | 2006-06-21 | 爱知制钢株式会社 | Denture attachment, denture and process for producing the same |
| CN201879855U (en) * | 2010-12-09 | 2011-06-29 | 中国科学院金属研究所 | Magnetic retainer used for tooth |
-
2010
- 2010-12-09 CN CN2010105806957A patent/CN102551904A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1519387A (en) * | 2003-01-20 | 2004-08-11 | 中国科学院金属研究所 | Embedded material of austenitic stainless steel in medical use |
| CN1750798A (en) * | 2003-02-17 | 2006-03-22 | 爱知制钢株式会社 | Denture magnetic attachment |
| CN1791367A (en) * | 2003-09-05 | 2006-06-21 | 爱知制钢株式会社 | Denture attachment, denture and process for producing the same |
| CN201879855U (en) * | 2010-12-09 | 2011-06-29 | 中国科学院金属研究所 | Magnetic retainer used for tooth |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103860280A (en) * | 2012-12-11 | 2014-06-18 | 中国科学院金属研究所 | False tooth magnetic retainer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2002102258A (en) | Denture attachment for bar type implant | |
| CN201879855U (en) | Magnetic retainer used for tooth | |
| MY136746A (en) | Iron-cobalt-vanadium alloy | |
| JPH08317941A (en) | Artificial tooth attachment | |
| Bhat et al. | Magnets in dentistry | |
| CN102551904A (en) | Dental magnetic retainer | |
| CA2183987C (en) | Dental attachment | |
| US20020137010A1 (en) | Dental magnetic attachment | |
| WO2014024673A1 (en) | Magnetic attachment for dental prostheses | |
| CN203107318U (en) | False tooth magnetic retainer | |
| CN103860280A (en) | False tooth magnetic retainer | |
| JP2008093126A (en) | Keeper for implant | |
| EP2216083A3 (en) | Conjugates of magnetic polymer particles and carboxymethylated aspartic acid | |
| EP1561434A1 (en) | Denture attachment, denture and process for producing the same | |
| Phelan et al. | The force-distance properties of attracting magnetic attachments for tooth movement in combination with clear sequential aligners | |
| JP3882846B2 (en) | Denture attachment | |
| CN2710569Y (en) | Magnetic functional appliance | |
| Akin | Magnetic flux density of different types of new generation magnetic attachment systems | |
| CN201800281U (en) | Silver-neodymium iron boron composite material | |
| CN203001152U (en) | Telescope crown magnetism retainer connecting device | |
| WO1993025159A1 (en) | Attachment for false tooth | |
| CN201200671Y (en) | Magnetic infusion device | |
| JP7125686B1 (en) | magnetic denture attachment | |
| CN203564379U (en) | Artificial bone | |
| JPH0773589B2 (en) | How to adjust the suction force of the denture attachment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120711 |