Dental prepolymerized resin filler type composite resin

Abstract

The invention provides a resin ribbon composite for filling a tooth. The resin ribbon composite for filling the tooth has a low solidified volume shrinkage rate, a high filler filling rate and good polishing performance and high intensity required by bearing filling. Methacrylate resin monomer, structural filler with the average grain diameter varying from 0.04 mu m to 0.4 mu m, and prepolymerized smash filler with the average grain diameter 32 mu m are mixed. In order to improve machining and mechanical property, generally the used prepolymerized filler is grinded to have the average grain diameter which is smaller than 32 mu m. The resin ribbon composite for filling the tooth further has structural filler with the average grain diameter smaller than 0.4 mu m and superfine filler with the average grain diameter smaller than 0.04 mu m.

Description

technical field

[0001] The present invention relates to resin-based dental filling materials, and more particularly to restorative compositions incorporating uniformly dispersed ultrafine reinforcing particles which exhibit high strength, low cure volume shrinkage, good abrasion resistance, gloss and transparency. Background technique

[0002] Dental composite resin is a polymer composite material mixed with specially treated inorganic fillers and bifunctional acrylate resins (such as Bis-GMA). It is cured at room temperature by means of a chemical initiation system or a photoinitiation system. Used together with pretreatment agent and adhesive. The cured composite resin has good physical properties and biocompatibility, and can be formulated into various colors similar to teeth according to clinical requirements, which makes up for the shortcomings of poor color of amalgam, and the raw materials of synthetic resin have low toxicity, which is harmful to the teeth. It is le...