Where is common biofilm and calculus found in the oral cavity?

The floor of the mouth is an area where biofilm and calculus can commonly accumulate due to several factors. This region often retains moisture and can create an environment conducive to bacterial growth. Additionally, saliva, which is rich in minerals, can deposit on surfaces in the mouth and contribute to the formation of calculus, particularly in areas that are more challenging to clean thoroughly.

While other areas of the oral cavity can also harbor biofilm and calculus, the floor of the mouth is a notable site due to its positioning and the type of environment it provides for bacterial colonization. The other options may also support bacterial growth to some degree, but they do not present the same prevalent conditions for accumulation as the floor of the mouth. For instance, the region between teeth or cheeks can be cleaned more effectively, and the upper gums adjacent to incisors and the roof of the mouth might not retain biofilm as readily as the floor. Thus, the floor of the mouth stands out as a common location for these types of deposits.