Dental Invasion by Adenoid Cystic Carcinoma of the Oral Cavity.

Cancer progression through the mandible bone is still questioned. Once the tumor has eroded the cortex, it can extend vertically and laterally. It usually spreads in the medullary spaces and finally affects the alveolar nerve. The presence of the teeth has been considered as a relative barrier to cancer infiltration until now. Herein, we report an uncommon case of dental root invasion by adenoid cystic carcinoma of the floor of the mouth.