Biofilm formation on two polymer-based CAD/CAM esthetic restorative materials: An In-Vitro Study

Abstract

Objectives. The surface characteristics of dental ceramics can be altered by intraoral adjustment and polishing, potentially leading to increased biofilm growth. This research focused on assessing roughness and bacterial adhesion to two polymer-based CAD/CAM ceramic materials.Materials and methods. Twenty discs were fabricated using two CAD/CAM resin-based composite blocks, Brilliant Crios (BC) and Tetric CAD (TC), each with a diameter of 10 mm. Ten discs were derived from each material. The surfaces of these discs were finished and polished to mimic typical intraoral procedures. Subsequently, surface roughness analysis (Ra) was conducted using contact profilometry. The study then examined biofilm formation and its correlation with surface roughness for the materials under investigation.Results. Brilliant Crios showed significantly higher roughness values of 0.25±0.04 and endorsed significantly greater biofilm growth streptococcus mutans bacterial adhesion.Conclusion. Intraoral polishing methods simulation resulted in increased biofilm accumulation. The material chemical composition with its surface roughness influences bacterial accumulation.