Prevalence of cervical enamel projection and its impact on furcation involvement in mandibular molars : a cone-beam computed tomography study in Korean

Abstract

Aim

The aim of this study was to evaluate the prevalence of cervical enamel projections (CEP) in mandibular molars, and to analyze the correlation between CEP and furcation involvement (FI) based on cone beam computed tomography (CBCT) data in Korean population.

Materials and Methods

CBCT images taken from March 2012 to August 2012 were analyzed. In 3D reformatted images and cross-sectional views, CEP and FI on the buccal and lingual surface were classified and the correlation was analyzed.

Results

A total of 982 teeth in 425 patients were analyzed. The total prevalence of CEPs was 76% (71% and 27% on the buccal and the lingual surface, respectively). Grade I CEP was observed most widely, followed by grade II and III. The correlation of the grade of CEPs and the degree of FI on the buccal and lingual surface was statistically significant, but showed negligible correlation.

Conclusion

Within the limitation of this cross-sectional study, high prevalence of CEPs were found in Korean population, but the role of CEP in provoking FI appeared not to be decisive.