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
Common questions
Why do I grind my teeth in my sleep?
You grind in your sleep because your jaw muscles never got the memo that the day ended. The NHS says teeth grinding is most often linked to stress and anxiety, and it also lists sleep problems like snoring and sleep apnoea, some medicines for sleep, depression, and anxiety, smoking, and heavy alcohol or caffeine intake as contributors. Most people find out one of two ways: a partner hears the grinding sound at night, or a dentist spots the wear, flattened or chipped teeth, and cracked fillings at a check-up. Morning clues are an aching jaw, a dull temple headache, and sensitive teeth. Left alone for years, grinding can wear teeth down and strain the jaw joint, so it is worth acting on. The dentist's main tool is a custom-fitted mouth guard or splint worn at night, which protects the teeth even if the grinding continues. The cause-side work matters as much: stress management, regular sleep, and cutting late caffeine, alcohol, and smoking. If you also snore loudly or stop breathing at night, tell your GP, because treating sleep apnoea sometimes stops the grinding too.