A Morphological Study on the Maxillary Dental Arch and Palate of the Chinese (Santo-sho) Using Moiré Topography

Abstract

We morphologically measured the forms of the dental arch and palate by using the maxillary dental casts by moiré topography in adult Chinese volunteers of the Shandong districts. Consequently, the round type was more prominent in dental arches, without sex differences. The dentition length and width of the posterior teeth in the volunteers were larger than those of previous reports in regard to Japanese or Filipino volunteers. The same result was obtained in the study of dental arches; namely, the Shandong group was different from the Japanese or Filipino group in the dental arch form. The dentition length and width (especially the width) of males was larger than those of females.
The palates of males were larger than those of females.
The width-height index of females was higher and the length-width index of males was higher. In the frontal section, there were no sex differences between the heights of the canine tooth and the second premolar. The palates of the first premolar were deeper in females, but the palates of the molar were deeper in males. Generally, the form of the palates in males was more up and down than in females.