出版社：Grupo de Pesquisa Metodologias em Ensino e Aprendizagem em Ciências
摘要：Introduction: The odontogenic keratocyst is a cystic lesion that is derived from the dental lamina, its remains or the beginnings of a normal or supernumerary tooth, before the formation of calcified tissues. It is equivalent to 11% of all odontogenic cysts, and only 1% of them affect the maxillary sinus. Clinically, in larger lesions, they may present with pain, swelling and drainage, where their diagnosis is confirmed by imaging together with histopathology. Objective: To report a case of a large odontogenic keratocyst in the maxilla, which invaded the left maxillary sinus from the alveolar bone to the infraorbital nerve, in a 51-year-old patient. Discussion: Among the most aggressive treatments we have the lowest lesion recurrence rates, but they have very significant disadvantages ranging from neuropathies to patient disfigurement, therefore, in large cysts, the most conservative treatments should be prioritized. Conclusion: Initially, treatments that reduce aggression and cystic volume should be chosen, such as decompression or marsupialization, as a way of protecting noble structures such as the lower alveolar nerve and the infraorbital nerve, and at the same time provide a second surgical time with a minor injury and less aggressive.
