Al-Gunaid Talat, Yamaki Masaki, Saito Isao
Department of Orthodontics, Ibb University, Yemen, Department of Orthodontics and Pediatric Dentistry, Taibah University, KSA.
Department of Oral Biological Sciences, Course for Oral Life Science, Niigata University, Graduate School of Medical and Dental Sciences, Niigata, Japan.
J Orthod Sci. 2012 Apr;1(2):40-5. doi: 10.4103/2278-0203.99760.
The aims of this study were to determine the mean mesiodistal tooth size width and Bolton's anterior and overall ratios, find any possible sex differences, and study the frequency of tooth size discrepancies among Yemeni population and if there is a difference in tooth size between the right and left sides.
176 subjects aged 13-25 years (94 females and 82 males) with different types of malocclusions (94 Angle Class I, 37 Class II division 1, 36 Class II division 2, and 9 Class III) were included in the present study. The mean mesiodistal tooth size width and Bolton's ratios were determined.
The results showed that males had significantly larger teeth than females. The prevalence rates of clinically significant discrepancy greater than 2 SD were 29.53% and 14.20% in the anterior and overall tooth size ratios, respectively. Further, the results revealed that there were no significant differences in the tooth size width between right and left sides.
The findings of the present study indicate that there was no significant difference between Bolton's ratio and that of Yemeni population.
本研究的目的是确定牙齿近远中径的平均宽度以及博尔顿前牙比率和全牙比率，找出任何可能的性别差异，研究也门人群中牙齿大小差异的频率，以及左右两侧牙齿大小是否存在差异。
本研究纳入了176名年龄在13至25岁之间的受试者（94名女性和82名男性），他们患有不同类型的错牙合畸形（94例安氏I类、37例安氏II类1分类、36例安氏II类2分类和9例安氏III类）。确定了牙齿近远中径的平均宽度和博尔顿比率。
结果显示男性牙齿明显大于女性。在前牙和全牙大小比率中，大于2个标准差的临床显著差异患病率分别为29.53%和14.20%。此外，结果表明左右两侧牙齿大小宽度无显著差异。
本研究结果表明，博尔顿比率与也门人群的比率之间无显著差异。
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