Where is biofilm most likely to accumulate in the mouth?

Biofilm accumulation in the mouth is notably influenced by several factors, including tooth anatomy, saliva flow, and the interface between teeth and surrounding structures. The proximal surfaces and cervical areas of facial surfaces are particularly conducive to biofilm accumulation due to the presence of tight contacts between adjacent teeth. This limited access makes these areas less accessible for effective self-cleaning by brushing or rinsing.

Additionally, the cervical areas, which are the areas near the gum line, provide a warm and moist environment, promoting bacterial colonization and biofilm formation. The anatomy of the teeth, particularly in terms of curvature and proximity to gingival tissue, further contributes to this accumulation, as food particles and plaque can become trapped in these regions. Regular practice of effective brushing and flossing is vital for disrupting and reducing biofilm buildup in these areas.

While other surfaces, such as the occlusal surfaces of molars or the lingual surfaces of anterior teeth, can also harbor biofilm, they do not present the same combination of anatomical intricacies and limitations that proximal surfaces have, making them less likely to see as significant a buildup as seen in the cervical and proximal regions.