Upper right back tooth pain that occurs mainly in the early morning or right after waking up is a common symptom with several primary dental and medical possibilities. Possible Causes • Sleep Bruxism (Teeth Grinding or Clenching): This is one of the most frequent causes of morning tooth and jaw soreness. Unconscious grinding or clenching during the night puts massive, continuous pressure on your jaw muscles and teeth, often concentrating on one side or a specific molar. • Maxillary Sinus Pressure: Your upper back molars sit directly beneath the maxillary sinuses. Fluid buildup, congestion, or mild sinus inflammation overnight can press down on the roots of these upper teeth, creating a dull ache or sensitivity that is most noticeable when you first wake up. • Temporomandibular Joint Disorder (TMD): Inflammation or fatigue in the jaw joint or surrounding chewing muscles can manifest as referred pain that feels like it is coming directly from your upper back teeth. • Dental Decay, Cracks, or Pulpitis: A deep cavity, a hairline fracture in the tooth, or low-grade nerve inflammation (pulpitis) can cause localized aching. Lying flat for hours increases blood and fluid pressure to the head and teeth, which often makes internal tooth inflammation feel much sharper or thumping upon waking. • Wisdom Tooth Irritation: If your upper right wisdom tooth is partially erupted, crowded, or inflamed, it can create localized discomfort and pressure toward the very back of your upper jaw. What You Should Do Next Because the pain has persisted for two months, relying on home remedies is not a permanent solution. You should schedule an appointment with a dentist for a physical and X-ray evaluation to pinpoint whether the issue is muscular, sinus-related, or structural (such as a crack or deep decay )To help narrow down what might be happening, do you notice: • Any sensitivity to hot, cold, or sweet foods? • Nasal congestion, post-nasal drip, or facial pressure around your cheekbones? • A clicking or popping sound in your jaw when you open your mouth?

You should visit your dentist so that a proper history can be taken and a clinical examination can be performed. After that, diagnostic procedures like X-rays or an OPG should be done to evaluate whether the wisdom tooth is causing the problem, or if there is a carious or infected tooth. This will help in creating a proper treatment plan to relieve your pain. A correct diagnosis is essential for further treatment.

Kindly visit a dentist. A detailed history is needed

Yes sir, I understand your concern and I would like to suggest to visit dentist for the same. Also reason for the pain  in the upper right back side is might be because of following possible reasons........ 1. Deep caries with periradicular tissues infection causing increase in intrapulpal pressure as you lie down or as you change your posture . 2.maxillary sinusitis

It could be your wisdom tooth or jaw related pain or a deep cavity

Visit dental clinic to identify the cause of pain , with help of diagnostic procedure like xrays . These procedure help to find out the main cause of pain . Treatment plan depand on invetigation and final diagnosis .