Nourallah Abduhl W, Splieth Christian H, Schwahn Christian, Khurdaji Mohammad
Department of Orthodontics and Pediatric Dentistry, Tichreen University, Lattakia, Syria.
Angle Orthod. 2005 Nov;75(6):996-9. doi: 10.1043/0003-3219(2005)75[996:SITHIA]2.0.CO;2.
The Bolton analysis is considered to be a good indicator for evaluating the degree of intermaxillary tooth-size harmony, but the possibility of ethnic variation of these values should be examined. Thus, the aim of this study was to calculate both the anterior and overall ratios of mandibular and maxillary tooth sizes for a Syrian sample of harmonious permanent dentitions and to compare these ratios with the data from the Bolton and the Michigan studies. In plaster models of 55 Syrian patients (11-22 years) with neutral occlusion (Angle Class I), harmonious overjet and overbite, no reduction of mesiodistal tooth width or missing teeth, the mesiodistal widths of each tooth from the incisors to the first permanent molars were measured in both arches. In the statistical data analysis, the anterior and overall ratios were calculated according to Bolton. The results for the anterior ratio (78.99 +/- 2.18) and the overall ratio (92.26 +/- 2.06) showed no statistically significant differences by sex (P > .48). These values and the degree of variation were similar to the original data by Bolton. Both studies differed considerably from the values of the anterior ratio found in the Michigan University study, which also shows a higher degree of variability. Nevertheless, the overall ratios of all three studies were very similar. Therefore, the interarch tooth-size analysis and values for a harmonious dentition developed by Bolton can also be transferred to an Arabian or at least a Syrian population.
博尔顿分析被认为是评估颌间牙大小协调性程度的良好指标，但应研究这些数值存在种族差异的可能性。因此，本研究的目的是计算叙利亚和谐恒牙列样本的下颌和上颌牙大小的前部及整体比率，并将这些比率与博尔顿研究和密歇根大学研究的数据进行比较。在55名叙利亚患者（11 - 22岁）的石膏模型中，这些患者均为中性咬合（安氏I类）、覆盖和覆合关系和谐、近远中牙宽度无减小且无牙齿缺失，测量了双侧牙弓中从切牙到第一恒磨牙每颗牙齿的近远中宽度。在统计数据分析中，根据博尔顿方法计算前部及整体比率。前部比率（78.99 +/- 2.18）和整体比率（92.26 +/- 2.06）的结果显示，按性别分组无统计学显著差异（P > .48）。这些数值及变异程度与博尔顿的原始数据相似。这两项研究与密歇根大学研究中发现的前部比率数值有很大差异，密歇根大学研究中的数值也显示出更高的变异性。然而，三项研究的整体比率非常相似。因此，博尔顿提出的牙弓间牙大小分析及和谐牙列的数值也可应用于阿拉伯人群或至少叙利亚人群。
