Facial sinus of dental origin: a case report.

Sinus tracts of dental origin opening on the skin can be a diagnostic challenge. A delay in correctly diagnosing these lesions can result in ineffective and inappropriate treatment; however, if recognized early, the sinus tract usually resolves after appropriate endodontic therapy or extraction. We report a case of a cutaneous sinus tract secondary to a periapical abscess of the mandibular first molar tooth. The case was successfully treated by extraction and the sinus tract healed.