Bruxism is defined as which of the following?

• A. Involuntary spitting while chewing
• B. Pain when chewing during activities
• C. Periods of silence during meals
• D. Involuntary grinding or clenching of the teeth usually during sleep

Answer: (D)

Bruxism is involuntary grinding or clenching of the teeth, typically during sleep, though it can occur during wakefulness in some people. This parafunctional habit can wear down teeth, cause cracks or chipping, and lead to facial muscle soreness or headaches from jaw strain. It’s not about involuntary spitting while chewing, which relates to saliva management, nor is it simply pain when chewing during activities—that points to dental pain or a temporomandibular disorder rather than grinding. Periods of silence during meals have no relevance to grinding or clenching. Treatment focuses on protecting teeth with night guards, reducing stress, and addressing any underlying sleep issues.