BACKGROUND: The odontogenic maxillary sinusitis is the consequence of the distribution of an inflammatory or infectious process of a tooth in sinuses mucous membranes. AIM: The purpose of our work is to study epidemiological profile, clinical and radiological characteristics allowing the diagnosis of this pathology as well as the various therapeutic strategies adopted. METHODS: We report a retrospective study of 31 observations of odontogenic maxillary sinusitis brought together in the service of ORL and of CMF of Rabta hospital over a period of 12 years. RESULTS: In our series, the frequency of this pathology was considered at 42.5% among the group of all maxillary sinusitis brought together during the same period, the average age was of 38 years with a sex ratio of 1.04. The dental antecedents are obvious in 80% of cases, the iatrogenic was found in 64% of cases. Dental causes were dominated buy para-apical cysts (29%), and the movement of the dough canalaire (23%) especially in fongic forms of sinusitis.