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Synthesis of a 45S5 bioactive glass cementitious resin bonded composite material for orthodontic applications - RIIIT
Synthesis of a 45S5 bioactive glass cementitious resin bonded composite material for orthodontic applications
A composite material based on 45S5 bioactive glass and commercial cementitious resin for orthodontic applications, was obtained, taking two commercial resins as control. The bioactive glass was synthesized using sol-gel and stabilizing the dry gel using microwave assistance for 6 minutes, obtaining an amorphous material with good dimensional stability and transparency. A composite material was prepared using Transbond cementitious resin and 8% 45S5 bioactive glass. The resulting composite was subjected to degradation tests to determine the effect of artificial saliva on this material degradation over a period of one month. Sample composite degradation and the fluid pH variations were analyzed via SEM/EDS. Composite bioactivity was determined by exposing the material to simulated physiological fluid (SBF), showing the formation of biological apatite layers on the materials’ surface. The composite´s mechanical properties were analyzed by adhering the brackets with the composite material to previously preserved human dental pieces and the shear strength of the composite was determined along with the tension strength between the resin teeth interface. Analyzes were performed by triplicate. A Statistical ANOVA analysis was performed to determine significant mechanical test results. These data showed that the synthesized composite material exhibited better bioactivity, mechanical and degradational properties compared to the commercial resins.
Keywords: Composite material, Bioactive glass, Cementitious resin, Orthodontics.
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