The most common cyst of the oral region is:

Periapical Cyst (Radiocular Cyst) MC type of jaw cystQ Inflammatory in origin. Extremely common lesions found at the apex of teethQ. Develop as a result of long-standing pulpitis, caused by advanced carious lesions or by trauma to the tooth. Periapical inflammatory lesions persist as a result of the continued presence of bacteria or other offensive agents in the area. Treatment: Complete removal of offending material and appropriate restoration of the tooth or extraction.