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