Dysesthesia with pain due to a broken endodontic instrument lodged in the mandibular canal--a simple deroofing technique for its retrieval: case report.

This article presents a simple deroofing technique to retrieve a broken endodontic file lodged in the mandibular canal and causing dysesthesia with pain. Many unsuccessful attempts were made to retrieve the broken instrument. The deroofing technique described is simple, requiring local anesthesia and done on an outpatient basis with minimum morbidity. A brief review of the literature on dysesthesia of the inferior alveolar nerve caused by endodontic materials is also presented.