Impact of thio-urethane additive and filler type on light-transmission and depth of polymerization of dental composites

The vast majority of posterior restorations is performed using direct resin composites, with an annual failure rate of around 2%, resulting in cumulative survival values of as high as 60% after 20 years follow-up [1]. The expansion in use of composites to restore posterior teeth is mainly due to a significant improvement in wear behavior and general mechanical properties, which allowed this material to be applied in high load bearing zones [2]. However, there are still many drawbacks that prevent composite restorations from surviving longer than an average of 10 years [4], failing mainly due to secondary caries and fracture [1 –4].
Source: Dental Materials - Category: Materials Science Authors: Source Type: research