Resin base composite material dowel pin for dental surgery

A composite material and resin-based technology, applied in dental preparations, dentistry, medical science, etc., can solve problems such as insufficient toughness, achieve stable product quality, low cost, and prevent brittle fracture

Inactive Publication Date: 2004-11-17
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the shortcomings of the lack of toughness in the prior art, the present invention provides a resin-based composite post for dental use and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] Concrete preparation method is as follows:

[0025] (1) Take 1% of the coupling agent used in the amount of nanoparticles, and prepare it into an acetone solution or an alcohol solution. Put 1.5g of nanoparticles into 80-100ml of 1% coupling agent solution, and use ultrasonic dispersion for 15-20 minutes.

[0026] (2) Add the nanoparticles treated with the coupling agent solution into 100 g of epoxy resin, raise the temperature to 80° C., and disperse for 15 to 20 minutes with a high-speed homogeneous disperser.

[0027] (3) Evenly mix 100g epoxy resin containing nanoparticles with 50ml acetone as a glue solution, use S-GF as a reinforcing material, and prepare a prepreg by winding method, let it dry, and cut.

[0028] (4) Arrange the long fibers along the axial direction of the studs, and use the winding process, pultrusion process, molding process and resin transfer molding process to form and cure on the molding machine. The curing conditions are: 90°C / 1h+120°C / 1h...

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Abstract

The invention discloses a dentist's resin based composite material dowel pins and the process for preparation, which comprises, (1) preparing acetone solution or alcohol solution with coupling agent, charging nano particles into the acetone solution or alcohol solution for ultrasonic wave decentralized processing, (2) charging the nano particles treated by the solution of the coupling agent into the resin matrix, (3) using the long fiber as reinforced material, making the matrix of the resin fully infiltrate the long fiber, (4) configuring the long fiber along the axis of the dowel pins, performing press forming and hardening on the molding press, cooling down and demoulding, process till the required shape and length are achieved.

Description

technical field [0001] The invention relates to a resin-based composite material post nail for dental use and a preparation method thereof, in particular to a resin-based composite material post nail reinforced and toughened by long fibers and nanoparticles and a preparation method thereof. Background technique [0002] It is a commonly used method in clinical dentistry to make post crowns to repair residual roots and residual crowns with pegs. At present, metal posts and nails widely used in clinical practice are mainly considered in terms of their strength and retention. The study found that the elastic modulus of the metal post is much larger than that of the tooth tissue, and there is a risk of root fracture after the pulpless tooth is repaired with a metal post; at the same time, the metal post is easy to corrode, discolor, and opaque, which affects the appearance; Certain elements in metals may also cause human allergies and chronic poisoning; they may also affect mag...

Claims

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Application Information

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IPC IPC(8): A61C5/00A61C13/225A61K6/00
Inventor 郑亚萍张文云张国彬张爱波陈立新
Owner NORTHWESTERN POLYTECHNICAL UNIV
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