Is the tooth sensitive to temperature, is it dull or severe, is it spontaneous (hurts all the time), does it hurt when you are eating? Drinking? What temperature: hot or cold? Does it hurt more at night? When did it started? Did it happen in the past? Is the tooth moving? Does the tooth have a filling and what kind of filling (metal vs. white)? How did it start? Did you have any recent extraction? Do you suffer from TMJ? And then follow-up questions. Find an experienced dentist that takes time to speak to you. A correct diagnosis by an expert dentist is worth every penny. Misdiagnosis can cost much more than a pay out of pocket consultation exam. I know I did not give you a definite answer, but there are many reasons for tooth pain and a cavity is only one of them.
Best of luck.
There is not one simple answer for this question. Sometimes even experts can misdiagnose this. Tooth infection may show the following symptoms: spontaneous pain, severe lingering pain, severe pain to hot and cold, swelling of your face, warmth to touch, and more. On the other hand, I have seen infected teeth with none of these symptoms. Gum infection is normally due to lack of dental care, especially brushing, flossing, and professional cleaning. There may be bleeding and the pain is general area and not as severe as tooth infection. To properly diagnose either problem I recommend you to see a dentist, either problems won’t go away without proper care and can have Severe consequences.I hope this help to answer your question.
Ramesh Kianfarr-Taheri, DMD
To avoid further damage you and your Dentist need to explore the reason behind your issue, resolve the problem (electronic tooth brush that automatically stop if excessive pressure is applied during brushing), a guard or what your dentist recommends. Remember you and your Dentist should be team working together.
Either case a section of your tooth called Dentin is now exposed. Dentin is the layer before your nerve therefor you feel sensitivity. Unfortunately dentin is much more pron to cavity and if not covered it will cause further problems. Fill or Crown it according to the size of old filling or remaining tooth structure, and always remember if your tooth has more filling than tooth...crown is more logical treatment to avoid root canal and etc....