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
All of the following factors alters buccinator mechanism EXCEPT
assistant
The correct answer is  Habits that alter the buccinator mechanism are

Mouth breathing
Thumb/Finger sucking
Tongue Thrusting
Lip/Nail Biting