EN
Odontogenic phlegmon of the mouth floor—Ludwig's angina (phlegmonae fundi cavi oris seu angina Ludovici)—is a rare, life-threatening, local complication in most cases of odontogenic inflammation. This study presents the case of a patient treated in the Department of Maxillofacial and Plastic Surgery of the University Hospital in Białystok due to phlegmon of the mouth floor resulting from odontogenic inflammation with a dynamic course. Quick diagnostics, surgical intervention as well as antibiotic therapy contributed to its efficient and successful treatment.