Prevalence of Enamel Pearl in patients referred to radiology section of Shahid Beheshti dental school, using CBCT during 2018-2019 years.

Dental anomalies such as enamel pearl cause problems in the treatment process of patients. Accordingly, this study has investigated the prevalence of this anomaly.

In this descriptive-analytical study, CBCT images of 150 patients (a total of 4,200 teeth) extracted from the radiology department of Shahid Beheshti Dental School between 2017 to 2018 were reviewed. The prevalence of the Enamel Pearl anomaly were evaluated. The images of each patient in the reconstructed panoramic view were examined, then each tooth was evaluated in MPR view and then in Cross section view with 0.5 mm thickness, finally the data were statistically analyzed.

In the present study, from a total of 4200 CBCT images, only two samples were diagnosed to have an Enamel Pearl anomaly. After examining one of the specimens in MPR and Multiplanar view, the initial diagnosis of Enamel Pearl was rejected by an experienced radiologist. Only in one case, Enamel Pearl anomaly was observed in the mesiobuccal and distobuccal furcation of the upper right second molar in the form of a round radiopaque nodule with definite boundaries, which had a prevalence of 0.02%. As this anomaly was observed in only one person, no statically relationship concluded between this anomaly and age, sex and tooth location.

In the statistical population of the study, only one case of Enamel Pearl anomaly was observed by using CBCT imaging, which had a prevalence of 0.02%.