THE OCCURRENCE OF MOTTLED ENAMEL AMONG THE CHINESE

¹ Departments of Oral Surgery and Anatomy, Peiping Union Medical College, Peiping, China

The common occurrence of mottled enamel among the Chinese is reported for the first time. While generally distributed over the whole of North China, the significantly higher incidence of the condition in certain regions is shown by a statistical comparison of observations made in two widely separated centers. A gradual decrease in percentage incidence of the condition among individuals in the later age-groups of the population is noted. This observation leads the authors to suggest that the condition in question is most probably a manifestation of constitutional deficiency. The need of correlational studies on the occurrence of mottled enamel in connection with other morbid conditions affecting individuals in the adolescent period is emphasized.