Dental plastic light curing compound material dowel and preparation method thereof

Abstract

The invention relates to a dental plastic photocuring composite material dowel pin and a preparation method thereof, which are technically characterized in that: the composition comprises photocuring resin, photosensitizer, photoinitiator, acrylic resin, thermal initiator, matrix resin triethylene glycolbismethyl-acrylate and reinforcing material of one-way fiber. The invention adopts two curing systems of a photocuring system and a thermal curing system, thus forming a mutual penetrating network structure; before the photocuring resin is not cured, the acrylic resin and the photocuring resin matrix mutually penetrate to form a cross network polymer since the acrylic resin has large molecular weight, a special polymer composite structure for compulsive mutual solution and synergy is formed on the molecular level, and the chains of the two polymers are mutually wound, thus ensuring the micro-pulverization of phase tissues, improving the interphase bonding force, giving a certain shape to a prepreg and further achieving the purpose of plastic property. The dowel pin and the method have the advantages that: the dowel pin can be used in the form of the prepreg, which can meet the requirements on the different curvatures of the different patients, realize the direct curing in the mouth and reduce the times of the return visits.

Description

technical field [0001] The present invention relates to a plastic light-curable composite material pile and its preparation method for dentistry. It belongs to medical cosmetic dental restoration material. Composite studs that are required to be bent into different angles and shapes. Background technique [0002] It is a commonly used clinical method to make post crowns with post nails to repair residual roots and residual crowns. In the past, it was considered in terms of its strength and retention. However, in recent years, studies have found that metal posts widely used in clinical practice have the risk of causing root fractures after repairing pulpless teeth because their elastic modulus is much larger than that of tooth tissue. At the same time, metal studs are easy to corrode, discolor, opaque and affect the appearance; some elements in the metal may cause allergies and toxicity; affect magnetic resonance (MRI) imaging and other disadvantages. Especially in recent ...

AI Technical Summary

Problems solved by technology

In the 1990s, carbon fiber composite post nails appeared abroad. Although their mechanical properties are relatively ideal, their inherent black color affects their appearance, which hinders their wide application in clinical practice.

These three kinds of posts are all thermosetting composite posts. The thermosetting process takes a long time and the shape is fixed, which cannot meet the clinical requirements of different angles.