Hello, I'm Dr Chaithanya here. Let me go ahead and give you an answer for the question you asked.
Teeth grinding can be harmful because it can cause loosening of teeth or fractures as well.
The treatment of teeth grinding due to anxiety are, attending stress counseling, starting an exercise programme after seeing a physical therapist, or obtaining a prescription for muscle relaxants from a doctor.
Avoiding caffeine, chocolate, alcohol can be helpful.
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