1. What is dental biofilm? 2. What is dental biofilm a risk factor for?

-Dental biofilm is a dense, soft, slimy, structured community of microorganisms (bacteria colonies). Biofilm formation begins with bacteria entering the moist and warm oral cavity and slowly forming a layer/film over the teeth. -Biofilm is a risk factor for gingivitis, periapical periodontitis, periodontitis, and peri-implantitis as it causes inflammation, infection and destruction of periodontal structures. The bacteria in biofilm produces acid which de-mineralises tooth surface and increases the risk of caries.