Muscle which has influence in the formation of buccal frenum of maxilla:: (A) Levator anguli oris, (B) Quadratus labii superioris, (C) Triangularis, (D) Inferioris
Answer is A. Buccal frenum of maxilla contains levator anguli oris (caninus), buccinator and orbicularis oris.
Buccal frenum of mandible contains triangularis or depressor anguli oris.