Ricerc@Sapienza

Background: Shade matching is a significant treatment step and a challenge for the clinical team with potentially high costs for color correction. Currently, in the United States, the majority of private dental practitioners use visual color matching, but a recent study has reported a high rate of mistakes of subjective color determination among graduate dentists. Objective: The aim of this retrospective study is to analyze whether a change in the oral background due to dental occlusion can influence tooth color determination.

Travertine is a sedimentary carbonate rock widely used in Roman arts and frequently subjected to biodeterioration. In this preliminary multi-analytical study, three essential oils (EOs) from T. vulgaris, O. vulgare, C. nepeta and their respective phenolic major components (thymol, carvacrol, pulegone) were selected to evaluate their biocidal potential against a multi-species biofilm grown on a travertine test wall located inside Sapienza University Campus in Rome. A preliminary characterization of the biofilm occurred through the employment of genomic methodologies.