Non-vital tooth?: Could be a number of things: body's reaction to a non-vital , necrotic pulp ("dead nerve"), a reaction to the injection of local anesthetic, a disrupted occlusal relationship from the new filling or something entirely unrelated (abscess? Infected impacted tooth?). See your dentist any time an abnormal symptom lasts more than 3 days; asap if there is swelling.
Answered 12/28/2013
4.6k views
Possibly...: But your dentist would need to look at the tooth and test it to see if root canal therapy is indicated. Could be from the injection or from keeping your mouth open for a while.
Answered 12/29/2013
4.6k views
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