Polymerizable monomer composition for dental restoration as well as preparation method and application of polymerizable monomer composition

Abstract

The invention provides a polymerizable monomer composition for dental restoration as well as a preparation method and application of the polymerizable monomer composition. The polymerizable monomer composition comprises a combination of a polymerizable monomer, an initiator and a cross-linking agent. By adding the cross-linking agent, the double-bond conversion rate of the polymerizable monomer is improved, and the residual rate of the polymerizable monomer is reduced; as the polymerizable monomer is added into a resin ceramic repair material, the prepared resin ceramic repair material can have high strength and toughness, so when the resin ceramic repair material is applied to tooth repair, the resin ceramic repair material can keep a good form during processing or during wearing and using by a patient; and the water absorption value and the dissolution value of the resin ceramic repair material are reduced, and the mechanical strength is improved, so the service life of the resin ceramic repair material is prolonged, and market requirements are met.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a polymerizable monomer composition for dental restoration and its preparation method and application. Background technique [0002] At present, digital restoration based on CAD / CAM technology has become an important development direction of prosthodontics. A variety of dental restorations can already be processed digitally. The development of dental restoration materials cut by CAD / CAM has reached a certain scale and has a good development prospect. Among these CAD / CAM-cut dental restoration materials, ceramic materials are the most widely used materials for CAD / CAM technology because of their better mechanical properties, optical properties and biocompatibility. However, ceramic materials are highly brittle, prone to ceramic cracking, and have greater wear on cutting drills, and also severely wear on opposing teeth due to their high hardness. Resin ma...

AI Technical Summary

Problems solved by technology

However, resin materials cannot be used for permanent repair due to defects such as low strength, poor wear resistance, and short service life.

[0003] Resin-ceramic restorative materials combine the characteristics of high strength of ceramic materials and good toughness of resin materials, but there are still two problems: (1) Although resin-ceramic restorative materials inherit the biological phase of ceramic materials to a certain extent Capacitance, avoiding the shortcomings of ceramic materials such as high strength, easy wear and tear, and brittle fracture, and compared with resin, the mechanical properties of the material have also been greatly improved, but in actual dental restorations, resin-ceramic composite materials The mechanical performance is not completely satisfactory

(2) If the water absorption value of the resin ceramic restoration material is too high, the mechanical properties of the material will be reduced, micro-leakage and thermal stability of the material will be reduced, resulting in the precipitation of unreacted monomers of the material and even the hydrolysis of polymer chain segments , resulting in a reduction in the service life of the material

However, the improved mechanical strength is only 200MPa, which cannot fully meet the needs of patients

Images