Parotid duct opens
The duct runs forwards for a sho distance between the buccinator and the oral mucosa. Finally, the duct turns medially and opens into the vestibule of the mouth opposite to the crown of upper second molar tooth. REF.BDC SIXTH EDITION VOL NO:3 PAGE NO:110
Opposite 1st mollar
Opposite 2nd molar
Into the papilla
Opposite incisor
Head and neck