Correlação de alterações patológicas com a espessura de folicúlos pericoronários de terceiros molares não irrompidos em tomografia computadorizada de feixe cônico

• Autor(a) principal: Mariano Junior, Wilson José
• Data de Publicação: 2019
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• dARK ID: ark:/38995/0013000002znb
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/9994
• topic: Folículos pericoronários; Radiografia panorâmica digital; Tomografia computadorizada de feixe cônico; Potencial neoplásico; Digital panoramic radiography; Cone beam computed tomography; Neoplastic potential; Pericoronal Follicles; CIENCIAS DA SAUDE::ODONTOLOGIA

The pericoronal follicle (PF) that surrounds the unerupted tooth has been related to the development of cystic or neoplastic lesions. The conventional panoramic radiographic image has been used to evaluate the increase of the space of the PF related to the pathologies, being considered pathological when ≥3 mm, however there are reports of PF ≤ 3mm presenting cystic or neoplastic alterations. There are no estimates of PF space in the literature using computed tomography (CBCT). The purpose of this study was to compare PF measurements in digital panoramic radiography (RPD) and CBCT and to investigate the association of histological changes and neoplastic potential of PF investigating Ki-67, p53 and Bcl-2 index. Twenty-seven PF of 13 intraosseous included teeth were selected. The results indicate that measurements in both RPD and CBCT are more accurate than measurements obtained manually. Measurements obtained by TCFC were higher than in RPD. There was no association between spaces smaller and larger than 3 mm with histological and pathological alterations. Only 2 PF presented pathological alterations, being a dentigerous cyst and odontogenic myxoma. Calcifications present were mostly of a cementoid nature. In summary, RPD should still be considered as the method of choice for assessing PF thickness regardless of whether it is less than or greater than 3mm, although CBCT images allow a broader assessment, the radiation dose should be considered when prescribing this modality of image.