I have severe toothache.I don't have any cavities.The tooth is the left incisor from front in the upper jaw.I couldn't properly sleep in night because of it.I visited dentist yesterday and he said that I might have any sort of injury 2 years back.I remember,I had hit the upper jaw and had pain in the same tooth.The dentist has given medicines and has suggested to wait or otherwise if no relief ,RCT will be performed.The medicines give me relief only for 4-5 hours and after that the pain starts.