Özet:

Abstract Extraoral fistulas are confused with many different formations, especially skin lesions, tuberculosis, and osteomyelitis, and as a result, ineffective treatment can be applied to patients. Differential diagnosis should be made very carefully in these cases to prevent wrong diagnosis and treatment. This study's goal is to summarize the dental diagnosis and treatment options of extraoral fistulization developing due to odontogenic infection. A 22-year-old male patient with no systemic disease applied to Sivas Cumhuriyet University Faculty of Dentistry due to the extraoral fistula in the left maxillary region. According to the dental history of the patient, he had undergone a root canal treatment in tooth number 26 in another institution two years ago. The patient primarily applied to the dermatology clinic. The patient was not treated in the dermatology clinic and was referred to the plastic surgery department. But when it was observed that healing could not be achieved despite three operations, the patient was referred to the dentist. It should definitely be taken into consideration that skin lesions in the face and neck region may be caused by odontogenic infections. The clinical and radiographic examination should be performed carefully in the differential diagnosis, and the appropriate diagnosis should be made. Thus, when a tooth related to the lesion is detected, the use of unnecessary medications and wrong interventions may be avoided by performing the appropriate treatment. Keywords: Extraoral, fistula, chronic, abscess, periradicular tissues.

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