Salmon D, Le Bot P
Am J Phys Anthropol. 1977 Mar;46(2):245-51. doi: 10.1002/ajpa.1330460205.
The survey of a French male population allowed us to ascertain 75 propositi with one or two missing ULI, 59 propositi with one or two reduced ULI and 99 controls on whom measurements (mesiodistal and buccolingual diameters) of all of teeth of the superior arch are available. Principal Component Analysis gave a first estimated principal component highly correlated with each of the dental measurements of arch measurements. This size factor was eliminated by observing the plane of the second and third principal components. Strikingly different clusters of MD diameters or BL diameters were observed for the controls, the propositi missing one or two fo the ULI and the propositi with reduced ULI. For the controls, the arch length is correlated with the MD molar diameters and the MD incisor diameter, the arch width being isolated from the other measurements. For the propositi with missing ULI, among the dental measurements the MD and BL diameters cluster, the arch length is isolated as are the arch widths. For the propositi with reduced ULI, the rich length is closer to the dental measurements while the widths, especially the first one, are isolated. The best discriminant measurements are the diameters of the first premolars and the canine, the first arch width and the arch length. Among controls, the arch is narrowed and shorter for the propositi with absence and wider for the propositi with reduction. Teeth measurements are always smaller in propositi.
对法国男性人群的调查使我们能够确定75名有一颗或两颗上颌侧切牙缺失的先证者、59名有一颗或两颗上颌侧切牙变小的先证者以及99名对照者，对照者上颌所有牙齿的测量数据（近远中径和颊舌径）均可用。主成分分析得出第一个估计主成分，它与牙弓测量的每个牙齿测量值高度相关。通过观察第二和第三主成分的平面消除了这个大小因素。对照者、缺失一颗或两颗上颌侧切牙的先证者以及上颌侧切牙变小的先证者的近远中径或颊舌径呈现出明显不同的聚类。对于对照者，牙弓长度与磨牙近远中径和切牙近远中径相关，牙弓宽度与其他测量值无关。对于上颌侧切牙缺失的先证者，在牙齿测量中，近远中径和颊舌径聚类，牙弓长度和牙弓宽度与其他测量值无关。对于上颌侧切牙变小的先证者，牙弓长度更接近牙齿测量值，而宽度，尤其是第一个宽度，与其他测量值无关。最佳判别测量值是第一前磨牙和尖牙的直径、第一个牙弓宽度和牙弓长度。在对照者中，上颌侧切牙缺失的先证者的牙弓变窄且变短，上颌侧切牙变小的先证者的牙弓变宽。先证者的牙齿测量值总是较小。
