Abstract
This study looks to improve upon base liners and current state of the art flowable composites. Secondary caries are the main reason for restoration replacement. Secondary caries often occur as a result of the composite developing microcracks after a filling. Microcracks are often due to stress from shrinkage during polymerization. Additionally, the replacement of bis-GMA with UDMA was studied due to the effort to replace BPA in dental materials. Additionally, these formulations also contained microcapsules capable of releasing bioavailable remineralizing ions. Therefore, there were three main objectives of this study: combine the ideas of using a low stress monomer to combat shrinkage; incorporate ion releasing microcapsules to fight demineralization and the failure of composites due to secondary caries; and produce a formulation with no trace of BPA in it to improve current flowable composites. The specific goal of this study is to determine how the novel low stress, BPA free monomer mixed with ion-releasing microcapsules, affect the stability as measured by the post shear stress flow of these novel formulations as a function of time. The results demonstrated the potential to incorporate microcapsules in a colloidally stable flowable composite formulation.