Waking up with tooth pain can be caused by several factors, ranging from dental issues to other health conditions. Here are the seven most common causes and how you can treat them: 1. **Bruxism (Teeth Grinding)**: This is when you unconsciously grind your teeth during sleep. It can cause jaw pain, headaches, and tooth damage. Stress and sleep disorders are common causes. Treatment includes using a mouthguard at night and stress management techniques. 2. **Sinus Infection**: Sinuses located above your teeth can cause pressure and pain in your upper back teeth when infected. Symptoms include nasal congestion and facial pain. Treatment involves decongestants, nasal sprays, and sometimes antibiotics. 3. **Temporomandibular Joint Disorder (TMJ)**: Inflammation in the joint connecting your jaw to your skull can cause pain in your jaw and face. Causes include bruxism and arthritis. Treatment includes jaw exercises, pain relievers, and sometimes physical therapy. 4. **Cavities**: Untreated cavities can reach the tooth's inner layer, causing intense pain. Treatment involves dental fillings or root canals. 5. **Gum Disease**: Early gum disease (gingivitis) can cause swollen, bleeding gums and toothaches. Advanced gum disease (periodontitis) can lead to tooth loss. Treatment includes professional cleanings and good oral hygiene. 6. **Impacted Teeth**: Teeth that can't erupt through the gumline can cause pain and swelling. This is common with wisdom teeth. Treatment often involves surgical removal. 7. **Abscess**: A bacterial infection can cause a pocket of pus in the tooth or gums, leading to severe pain, swelling, and fever. Treatment involves draining the abscess and antibiotics. For mild tooth pain, try home remedies like rinsing with warm salt water, using over-the-counter pain relievers, and applying a cold compress. However, persistent or severe pain should be evaluated by a dentist.