CN2613246Y - Column shape dowel pin - Google Patents
Column shape dowel pin Download PDFInfo
- Publication number
- CN2613246Y CN2613246Y CN 03232935 CN03232935U CN2613246Y CN 2613246 Y CN2613246 Y CN 2613246Y CN 03232935 CN03232935 CN 03232935 CN 03232935 U CN03232935 U CN 03232935U CN 2613246 Y CN2613246 Y CN 2613246Y
- Authority
- CN
- China
- Prior art keywords
- dowel pin
- column shape
- post pin
- shape dowel
- pin
- 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.)
- Expired - Fee Related
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- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
- Dental Preparations (AREA)
Abstract
Disclosed is a cylindrical post pin. The utility model belongs to a post pin which repairs the residual roots and crowns in a dental clinic, in particular to a post pin of a composite structure. The post pin is shaped to an integral cylindrical post pin by lengthwise arrayed fiber groups and resins stuck around the fiber groups. The post pin has simple structure, the strength can meet the clinical demand, and the springy module is near to the teeth tissue, which is beneficial for protecting the residual roots, the appearance is good, a beautiful repairing effect can be realized, and the utility model is easy to be removed and is convenient for changing a repairing body.
Description
Technical field
This utility model belongs to the dowel pin of the dowel pin, particularly composite construction of dentistry clinical repair undesirable root, residual crown.
Technical background
With dowel pin making dowel crown reparation undesirable root, residual crown is clinical method commonly used.Many in the past from its intensity, the consideration of maintenance aspect.But Recent study is found, present clinical widely used metal dowel pin is because its elastic modelling quantity much larger than tissue of tooth, behind its reparation pulpless tooth, has the danger that causes the root folding.The perishable variable color of metal dowel pin simultaneously, light tight and influence attractive in appearance; Some element might cause allergy again, have toxicity in the metal; Influence shortcomings such as magnetic resonance (MRl) imaging.Especially in recent years along with the beauty treatment development of dentistry and people to the raising of requirement attractive in appearance, make no metallic prosthetic become new development trend.The carbon fibre composite dowel pin has appearred abroad in the nineties in 20th century, and is attractive in appearance because of its inherent black influence although its mechanical performance is more satisfactory, hinders it and is widely used in clinical.Though at present external emerging ceramic dowel pin has higher intensity and aesthetic property, but still exist elastic modelling quantity much larger than tissue of tooth, deficiency such as cost an arm and a leg.And domestic research about nonmetal dowel pin yet there are no report.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of Column shape dowel pin, and it is simple in structure, and intensity can meet clinical needs, and elastic modelling quantity and tissue of tooth are approaching, helps protecting undesirable root; Aesthetic property is good, can obtain repairing effect attractive in appearance; Remove easily, be convenient to the Replacement and Repair body.
Solving the scheme that technical problem of the present utility model adopts is: is whole Column shape dowel pin by the group of fibers of vertical arrangement with the resin forming that is bonded in around the group of fibers.The hot strength of this dowel pin is greater than 600MPa, and bending strength is greater than 1200MPa, and elastic modelling quantity is between 18.6GPa～83GPa.
Glass fiber compound material has ideal combination property, dowel pin with its preparation has suitable elastic modelling quantity usually, adjusts easily to reach approaching with tissue of tooth, and the root of the tooth stress distribution after the reparation is more even, thereby can combine with root of the tooth better, prevent the danger of root folding; The matrix material of this compound dowel pin and the resin of dental have stronger bond properties in addition, and be therefore more firm than the conventional material combination; The glass fiber compound material dowel pin has semi-transparency, can obtain better aesthetic; Have corrosion resistance, do not influence nuclear magnetic resonance; Good biocompatibility, no short-term general toxicity, no cytotoxicity, can not cause acute haemolysis, to the oral mucosa nonirritant.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Each label is represented successively among the figure: glass fibre 1, resin 2.
The specific embodiment
Referring to Fig. 1, the glass fibre 1 that this dowel pin is arranged by a series of parallel longitudinals be bonded in resin 2 around the glass fibre 1 and be shaped to the integral body of column.The hot strength of the finished product dowel pin of prepared one-tenth is greater than 600MPa, and bending strength is greater than 1200MPa, and elastic modelling quantity just in time boundary is 18.6GPa～83GPa between dentin and enamel.In order to make dowel pin reach suitable intensity and elastic modelling quantity, and with dental material binding ability is preferably arranged, glass fibre 1 adopts high-strength glass fibre, and its technical parameter is 80/4 strands, density 2.54g/m
3, gamma-methyl allyl acyloxypropyl trimethoxysilane (KH-570) surface treatment, the quantity that comprises glass fibre in every pile nail is 35～95 bundles; 2 of resins adopt the EAM resin, i.e. epoxy-the methacrylate of maleic anhydride modified, and in resin, add nanoscale SiO is arranged
2Particle.For convenience clinical various model dowel pins are used, and the form of this dowel pin is designed to cylindrical, and diameter is 1.78mm～1.00mm, and length is 8mm～18mm.
Claims (4)
1, a kind of Column shape dowel pin is characterized in that the group of fibers by vertical arrangement is whole Column shape dowel pin with being bonded in group of fibers resin forming on every side.
2, by the described Column shape dowel pin of claim 1, it is characterized in that fiber is a high-strength glass fibre, its technical parameter is 80/4 strands, density 2.54g/cm
3, gamma-methyl allyl acyloxypropyl trimethoxysilane (KH-570) surface treatment, resin adopts epoxy--the methacrylate of maleic anhydride modified.
3,, it is characterized in that adding has nanoscale SiO in the resin by the described Column shape dowel pin of claim 2
2Particle.
4, by the described Column shape dowel pin of claim 3, it is characterized in that being shaped as of dowel pin is cylindrical, diameter is 1.78mm～1.00mm, and length is 8mm～18mm, and the radical of glass fibre is 35～95 bundles in every pile nail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03232935 CN2613246Y (en) | 2003-01-18 | 2003-01-18 | Column shape dowel pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03232935 CN2613246Y (en) | 2003-01-18 | 2003-01-18 | Column shape dowel pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2613246Y true CN2613246Y (en) | 2004-04-28 |
Family
ID=34248730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03232935 Expired - Fee Related CN2613246Y (en) | 2003-01-18 | 2003-01-18 | Column shape dowel pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2613246Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102988118A (en) * | 2012-11-30 | 2013-03-27 | 同济大学 | Subgingival residual root tractor |
-
2003
- 2003-01-18 CN CN 03232935 patent/CN2613246Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102988118A (en) * | 2012-11-30 | 2013-03-27 | 同济大学 | Subgingival residual root tractor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |