I had a cavity filled two weeks ago and it's still sensitive to heat and cold. How long will this last?
Steven E. Roth, DMD
Dentist, WebMD Medical Expert
American Academy of Cosmetic Dentistry
It is not unusual to have sensitivity after a deep filling. It could last 8-12 weeks. The most important thing to know is, if there is a change for the worse, you may have an irreversibly damaged nerve that can get infected. This would require root canal therapy to save the tooth. I would carefully monitor your symptoms and get in touch with the dentist if something changes.