Merz M L, Isaacson R J, Germane N, Rubenstein L K
Department of Orthodontics, School of Dentistry, Medical College of Virginia, Virginia Commonwealth University, Richmond.
Am J Orthod Dentofacial Orthop. 1991 Jul;100(1):53-8. doi: 10.1016/0889-5406(91)70049-3.
This study was undertaken to test the hypothesis that a sample of black patients will have larger mesiodistal tooth diameters and larger dental arch perimeters than a corresponding sample of white patients. In this study, the black sample's mean canine, first and second premolar, and first molar mesiodistal diameters were significantly larger than those of the white sample. The dental arches of the black patients were significantly wider and deeper but did not show significantly more crowding. Gender and race differences did exist, but gender differences were controlled by sampling procedures. The black sample also had a larger mean MP-SN angle but this was not accompanied by the increased crowding and the narrower dental arches that had been reported associated with high-angle white samples.
本研究旨在验证一个假设，即与相应的白人患者样本相比，黑人患者样本的牙近远中径和牙弓周长更大。在本研究中，黑人样本的尖牙、第一和第二前磨牙以及第一磨牙的近远中径均值显著大于白人样本。黑人患者的牙弓显著更宽更深，但拥挤程度并未显著增加。性别和种族差异确实存在，但性别差异通过抽样程序得到了控制。黑人样本的平均MP-SN角也更大，但并未伴随有报道称与高角白人样本相关的拥挤增加和牙弓变窄的情况。
