system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Parotid duct opens at the level of?
assistant
The correct answer is  Parotid duct/Stenson's duct passes through the buccinator muscle and pierces buccal fat, opening into the vestibule of the mouth at the parotid papilla, which lies opposite to the 2nd maxillary (upper) molar tooth.