Odontogenous sinus tract to the chin--case report.

This report describes the diagnosis, treatment and follow-up of a rare case of an odontogenic sinus tract to the chin. Despite the absence of caries, fillings, or crown damage, both lower central incisors were involved in a bony lesion. No history of any traumatic facial or dental injury was reported, and no orthodontic treatment with fixed appliances was performed. The findings on panoramic radiograph were incidental--the patient applied to the dental clinic due to a toothache in a lower first molar. The patient's history comprised seven-year-long unsuccessful dermatologic therapy. This included intraoral antibiotic and antihistamine intake, as well as topical antibiotic and steroid application. Endodontic treatment was proceeded, followed by recovery of the skin lesion. In the case of a single chronic suppurative or nodulocystic facial lesion, a dental clinical examination as well as a radiological assessment of the maxillary and mandibular dentition should be performed to exclude any odontogenic cause.