text: i had 3 minor cavities filled a few days ago so why does one of them feel sensitive now? so they were feeling fine yesterday and the day before... i had my wisdom teeth removed on the other side of my mouth so i've been using my right molars to chew since friday. they were giving me no problems until earlier today when i was eating a hot quesadilla... suddenly one of my molars felt a little bit sensitive. nothing ow but it was feeling a bit sensitive. right afterwards i drank some cold water (not ice cold but from the fridge) and my teeth felt sort of sensitive to that too.  so could it be my fillings are making my teeth feel sensitive, even though it wasn't a deep cavity at all? and why 3 days after having them filled would they bother me? i did eat a few tangerines today--could the acidity be linked? hairline crack in my molar (dentist didn't say anything about hairline cracks but then again, he wasn't looking for any)? my teeth were filled with that white filling, not the metal kind. the sensitivity experienced with getting white (composite) fillings is not an unusual thing. don't forget that anytime a tooth is drilled it can remain sensitive.  another thing that may make teeth sensitive to cold or acidic foods is gum recession. having had extractions previously you may  indeed feel some pain in the back where these teeth have not had the gums heal completly first. wait  1 week to see how things go. if they get better--no worries, if not see your dentist.