<s>[INST] Hello doctor, Since the age of 6 to 18 (current) I have had sharp pains in my mouth whenever I use my chewing teeth. No cavities whatsoever. I do not know what is the problem. And the pain is on and off. What is the problem? [/INST] Hi. Possibilities are many: 1. There might be fractured teeth. 2. There might be sinus problems. 3. There might be condylar or TMJ problems. 4. Might this be related to the nerves. I suggest you go to a good oral and maxillofacial surgeon or an endodontist. Different test reports can tell what the actual problem is because your problem is not on the surface, it is in-depth, so radiological reports are a must. Do revert back for more queries. Follow up with X-ray and other related reports. </s>