Odontogenic Cutaneous Sinus Tracts: When Dental Pathology Makes Its Mark on the Skin.

Odontogenic cutaneous sinus tracts are relatively rare. They consist of a sinuous channel or cord-like tissue extending from a dental infection site to the face or neck. This channel follows the path of least resistance to externalize, with its localization influenced by factors such as the proximity of the dental apex to the cortical bone and muscle attachments, root length, and the morphology of the affected jaw. Various etiologies can contribute to the development of these fistulas; however, chronic periapical abscesses caused by pulp necrosis due to dental caries represent the most common origin. These fistulas are frequently misdiagnosed as skin lesions due to the absence of overt dental symptoms. This delays appropriate treatment for these benign lesions and increases the risk of complications. Through a clinical case, we will explore the diagnostic challenges and discuss the therapeutic considerations specific to cutaneous sinus tracts of dental origin.