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Odontogenic cysts are benign non-neoplastic lesions that originate from epithelial cells Arachnida-Araneae) community in the process of the teeth development. Among them, the odontogenic keratocyst is a developmental cyst characterized by its epithelium of parakeratinized stratified and aggressive squamous cells as well as infiltrative behavior. Thus, the objective of this study was to describe a clinical case of surgical treatment of odontogenic keratocysts in a 52-year-old female patient, who presented for the treatment of a large lesion in a region of the left mandibular body and angle. After incisional biopsy and installation of a decompression device, the histopathological diagnosis of odontogenic keratocyst was obtained. Subsequently to a period of 9 months with the decompression device in place, a decrease of the lesion was noticed, thus allowing intervention to be performed the excision of the lesion. Thus, the patient was subjected, under general anesthesia, to enucleation of the lesion as the main treatment, with complementary maneuvers of peripheral ostectomy and application of Carnoy solution over the remaining bone bed. After an outpatient follow-up of 16 months, no signs of recurrence of the lesion were observed. The proposed treatment was efficient in removing the keratocyst with minimal surgical morbidities. In conclusion, the treatment protocol was effective and conservative in the surgical management of the lesion, allowing rapid recovery and return of the  function. Keywords: Bone Cysts. Decompression. Dental Care. Resumo Cistos odontogenicos sao lesoes benignas nao-neoplasicas que tem por origem celulas remanescentes epiteliais do processo de formacao do orgao dental. Dentre elas, o queratocisto odontogenico e um cisto de desenvolvimento caracterizado por seu epitelio de celulas escamosas estratificadas paraqueratinizadas, pelo comportamento agressivo e infiltrativo. Sendo assim, o objetivo desse estudo foi descrever um caso clinico de tratamento cirurgico do queratocisto odontogenico em uma paciente do genero feminino de 52 anos de idade, que compareceu para o tratamento de uma lesao de grande porte em regiao de corpo e ângulo mandibulares a esquerda. Apos biopsia incisional e instalacao de um dispositivo descompressivo, obteve-se o diagnostico histopatologico de queratocisto odontogenico. Posteriormente a um periodo de 9 meses com o dispositivo de descompressao em posicao, notou-se uma diminuicao da lesao, permitindo assim a execucao de intervencao para exerese da lesao. Assim, a paciente foi submetida, sob anestesia geral, a enucleacao da lesao como tratamento principal, com manobras complementares de ostectomia periferica e aplicacao de solucao de Carnoy sobre o leito osseo remanescente. Apos um acompanhamento ambulatorial de 16 meses, nao foi observado nenhum sinal de recorrencia da lesao. O tratamento proposto foi eficiente em remover o queratocisto com as minimas morbidades cirurgicas. Concluindo, o protocolo de tratamento foi efetivo e conservador no manejo cirurgico da lesao, permitindo rapida recuperacao e retorno da funcao. Palavras-chave: Cistos Osseos. Descompressao. Assistencia Odontologica.

Surgical Treatment of Odontogenic Keratocyst with Application of Carnoy's Solution: Case Report