Bacteria are a complex group of living microorganisms. They can be broadly classified on the basis of shape into different types such as cocci (spherical bacteria), bacilli (rod-shaped bacteria), and spirilla (spiral bacteria). The bacterial adhesion to a surface is a multi-step process through which single bacterial cells initially attach to the biomaterial followed by creation of biofilm, which is the primary cause of bacteria-related infections. Resin, composites, titanium alloys, and zirconia are some of the major dental biomaterials. An understanding of the interactions of the bacteria with the biomaterials is necessary for the growth of surgical intervention strategies. These strategies might be helpful in decreasing BCBIs and coatings which have the ability to prevent bacterial adhesion to biomaterials. This book unravels the recent studies on the interactions between bacteria and dental materials. It covers in detail some existent and innovative concepts revolving around the characterization of these interactions. This book will serve as a reference to a broad spectrum of readers.