FORMULATIONS FOR DENTAL APPLICATION WITH A LOW LEVEL OF SHRINKAGE, MICROFILTRATION, AND TOXICITY BY THE USE OF AN ACRYLIC MONOMER ORTHOS-PYROCARBONATE AND BIS-GMA.

摘要

The present invention relates to the process of preparation and use of ortho-pyrocarbonate urethane dimethyl acrylate monomer (SOF-IF-DMA) as a dental restorative material, which possesses mainly anti-shrinkage, microfiltration, toxicity, high conversion, and good mechanical properties. It aims to provide dental formulations from SOC-IF-DMA and Bis-GMA at different percentages by weight, (0/100) (25/75) (50/50) (75/25) and (100/0) respectively. The efficiency of the novel formulations based on SOC-IF-DMA/Bis-GMA is evaluated by conversion of double bonds (CDE) by the kinetics of photo polymerization in real time (RT-FTIR) where conversion values ??of up to 71%. The viscoelastic properties values ??of up to 10189MPa and for the flexural strength modules of up to 7161MPa. Said formulations in contraction tests and in vitro microfiltration using premolar teeth can reduce shrinkage and microfiltration of up to 51%. Further, combinations between SOC-IF-DMA/Bis-GMA manage to make the use of the two acrylic monomers more efficient since they proved to increase the final properties in the evaluated dental resins. Likewise, the cytotoxicity tests of the novel formulations showed that those based on SOC-IF-DMA turn out to be non-toxic when they contain more than 50% by weight of Bis-GMA.