Correlação de alterações patológicas com a espessura de folicúlos pericoronários de terceiros molares não irrompidos em tomografia computadorizada de feixe cônico
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2019-07-30
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Universidade Federal de Goiás
Resumo
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.
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MARIANO JUNIOR, W. J. Correlação de alterações patológicas com a espessura de folicúlos pericoronários de terceiros molares não irrompidos em tomografia computadorizada de feixe cônico. 2019. 76 f. Dissertação (Mestrado em Odontologia) - Universidade Federal de Goiás, Goiânia, 2019.