Torus, maxillary cysts and frenulums...

The most frequent dental cysts are: periapical, dentigerous, lateral periodontal, residual and eruption cysts. Treatment

A cyst is a sac or cavity surrounded by a membrane, containing air, fluid, or semi-solid material. It does not usually hurt, unless it becomes infected.

There are many different types of dental cysts, and they are mostly found within the maxillary bones.