RESUMO
Odontogenic cutaneous sinus tract is a rare but well-documented condition. A common manifestation of pulp necrosis is draining sinus tract or fistula, which could be intra-oral or extra-oral. The microbiologically induced inflammation spreads along the path of least resistance by penetrating the alveolar bone. Ultimately, to form a path of drainage, the inflammatory process can reach the surrounding tissues. These conditions are often misdiagnosed as other non-pulp pathologies. So misdiagnosed as a local skin lesion and maltreated by systemic antibiotics, we came across a 13-year-old girl patient who presented with a cutaneous lesion of dental etiology in the sub-mental region with frequent purulent discharge which was not responding to systemic antibiotics. The management of this condition using endodontic therapy of the involved tooth followed by surgical excision of sinus tract so as to minimize the residual scar formation are presented here.