 85 Chinese class I occlusions had similar odontometric measurements to white population, except for larger upper lateral incisors and smaller upper central incisors in Chinese. Sex differences in tooth sizes were seen only in canines, not antimheres. Bolton ratio of combined mesiodistal widths of mandibular anterior teeth was 77.89 ± 1.62 compared to maxillary anterior teeth. And compared favorably with original Bolton ratios despite statistically different interfacial angles, overbite and overjet. Relationships This article was authored by Luke KKK and Kung S.B.