ĐẶC ĐIỂM CARABELLI TRÊN RĂNG CỐI LỚN THỨ NHẤT VÀ THỨ HAI HÀM TRÊN Ở SINH VIÊN RĂNG HÀM MẶT TRƯỜNG ĐẠI HỌC Y DƯỢC, ĐẠI HỌC HUẾ

Abstract

Background: The cusp of Carabelli is accessory cusp commonly found on the mesial palatal surface of the maxillary molars. It plays an important role in racial recognization. The aim of study was to investigate the expression of Carabelli's trait at different levels on the maxillary first and second molars. Methods: Descriptive cross-sectional study was conducted on 75 students from Faculty of Odonto-Stomatology. For each student, maxillary alginate impression was taken and a diagnostic cast was poured with dental stone. Carabelli's trait on the maxillary first and second molars were evaluated according to Dahlberg's classification, and were classified into three groups: No Carabelli's trait, pit and groove, tubercle. Results: The proportion of maxillary first molars and second molars exhibiting Carabelli's trait were 74% and 28.6%, respectively; the percentage of teeth not showing Carabelli's trait were 26% and 71.4%, respectively. There was no difference in the expression of Carabelli's trait on the maxillary first and second molars between men and women, between the right and left jaws (p>0.05). Conclusions: Carabelli's trait was present in both maxillary first and second molars, with a greater prevalence in maxillary first molars.