Resumo

CARLI, João Paulo de et al. Diagnostic relationship between pericoronal follicle and dentigerous cyst. RGO, Rev. gaúch. odontol. (Online) [online]. 2010, vol.58, n.2, pp. 207-213. ISSN 1981-8637.

OBJETIVE: Associate the histopathological and radiographic diagnoses of cases of pericoronal follicle and dentigerous cyst of the mandibular third molars. METHODS: Histological slides and the respective panoramic radiographs of cases diagnosed as pericoronal follicle and dentigerous cyst were selected from files. A sample of 62 eligible cases was obtained: 45 pericoronal follicles and 17 dentigerous cysts. In order to confirm the histopathological diagnosis, the clinical information and histological slides of the patients were reassessed. The pericoronal radiolucent images in the radiographs were measured and those equal to or greater than 2.5 mm were used as parameter for the diagnosis of dentigerous cysts. The comparison between the results of the histopathological and radiographic diagnoses attributed to the 62 cases was done by sensitivity and specificity tests and by predictive value. RESULTS: The results showed that a size of 2.5 mm for the pericoronal radiolucent halo was not very sensitive for the diagnosis of dentigerous cyst. CONCLUSION: The differential diagnosis of the pericoronal radiolucent images must be clarified by the sum of clinical, histopathological and radiographic data.

Palavras-chave : dentigerous cyst; differential diagnosis; panoramic radiography.