Hello sir! Habit of night-time teeth grinding is called Bruxism. It generally happens because of stress or anxiety and leads to wearing down of enamel, i.e., teeth become shorter, sharper, sensitive, and prone to cracks.
Next Steps
Get a custom-made dental guard(night guard) from dentist to protect teeth at night. Also get your bite check by the dentist as sometimes malocclusion worsens grinding.
Health Tips
Stress management: Meditation, stretching, or breathing exercises can reduce grinding intensity