Why do I grind my teeth in my sleep?
Last updated September 3, 2026.
Sleep grinding is most often stress-driven, with sleep problems, some medicines, smoking, and caffeine or alcohol as amplifiers. Per NHS guidance, the diagnosis usually arrives through a partner who hears it or a dentist who sees the wear: flattened, chipped teeth and cracked fillings. Morning jaw ache, temple headaches, and tooth sensitivity are the other tells. A custom night guard or splint from your dentist protects the teeth while you work on the drivers: stress, sleep schedule, late caffeine and alcohol. Loud snoring or witnessed breathing pauses alongside grinding deserve a GP conversation about sleep apnoea.
What to do
- Ask your dentist to check for wear and fit a guard or splint if grinding is confirmed.
- Wind down before bed and keep a regular sleep schedule.
- Cut late caffeine, alcohol, and smoking; all are listed contributors.
- Tell your GP about loud snoring or gasping; sleep apnoea and grinding travel together.
Related questions
- Why does my jaw click?
- Why do I get headaches behind my eye?
- Why are my teeth sensitive?
- Why do I get a dry mouth at night?