Q. A while ago i had a deep silver filling replaced with a white filling, in the molar tooth, sice then i get pain of a sesitive nature when i try to chew food, i have been back to my dentist who adjusted the bite and took an exray, there was no evidence of a crack or hole in the tooth, the tooth was not dead. so my dentist is going to deep clean the gum next week, as he said there is sensitivity due to pockets, and when the gum has been deep cleaned the paiun should go. is this correct?