A Preliminary Study on Inherited Tooth Morphology Characters of Japanese and Chinese Young Adults

Yasutomo IWAI-LIAO, Lian GUO, Yoshikage HIGASHI, Dalin SUN, Takayoshi TSUBAI, Jae-Goo KIM, Masanori TAKEUCHI
1996 Okajimas Folia Anatomica Japonica  
differences in the incidence of Carabelli tubercles according to sex or body height were found between the two groups. 2) However, significant differences in the incidence of Carabelli tubercles according to sex were found in both groups. The tubercles occurred more frequently in males. 3) Significant differences between the bilateral and unilateral occurrence of Carabelli tubercles were observed in both the Japanese (p<0.05) and Chinese(p<0.01) groups; Carabelli tubercles on upper first molars
more » ... were always bilateral. 4) The highest incidence of Carabelli tubercles was found in individuals with a body height of 166~175 cm in both groups, and a significant difference (p<0.05)between the 156~165 cm and 166~175 cm groups was particularly evident in the Japanese adults. The authors postulate that bilateral occurrence of Carabelli tubercles was originally an inherited character in the molar region, but that the character was inhibited during the process of evolution of the masticatory system and regression of the molar dentition.
doi:10.2535/ofaj1936.73.1_1 pmid:8741381 fatcat:syf65nbborc43baybwwyaog3la