Togoo R A, Alqahtani W A, Abdullah E K, A Alqahtani A S, AlShahrani I, Zakirulla M, Alhotellah K A, Mujam O H
Department of Pediatric Dentistry and Orthodontic Sciences (POS), College of Dentistry King Khalid University, Abha, Kingdom of Saudi Arabia.
Department of Preventive Dental Sciences, College of Dentistry, Jazan University, Jazan, Kingdom of Saudi Arabia.
Niger J Clin Pract. 2019 Apr;22(4):553-557. doi: 10.4103/njcp.njcp_593_18.
The aim of this study was to compare the mesiodistal tooth sizes and to see the gender dimorphism among three ethnic groups of southern part of Saudi Arabia, that is, Asir, Najran, and Jizan region.
The sample composed of 90 individuals (45 of each gender) from 3 different regions of southern Saudi Arabia, having mean age of 26.9 years. The measurements were done directly on the models with the aid of the digital calliper measuring the largest mesiodistal measure of incisors, canines, premolars, and molars in both sides.
Almost all the mesiodistal tooth widths were statistically significant between the groups except maxillary and mandibular permanent third molars. Regarding sexual dimorphism, the groups were combined; almost all the mesiodistal tooth widths were not shown statistically significant difference between the males and females except that right first permanent premolars were significantly larger in the females than in the males.
The present study has provided norms of the mesiodistal permanent tooth diameters of a Saudi population that are newer and more complete than the previously published norms. There appear to be some secular trends in the mesiodistal diameter of the Saudi permanent teeth toward sexual dimorphism.
本研究旨在比较沙特阿拉伯南部三个族群（即阿西尔、奈季兰和吉赞地区）牙齿的近远中径大小，并观察性别差异。
样本由来自沙特阿拉伯南部3个不同地区的90名个体（男女各45名）组成，平均年龄为26.9岁。测量借助数字卡尺直接在模型上进行，测量双侧切牙、尖牙、前磨牙和磨牙的最大近远中径。
除上颌和下颌恒牙第三磨牙外，几乎所有组间的牙齿近远中径在统计学上均有显著差异。关于性别差异，将各组合并后；除右侧第一恒前磨牙女性明显大于男性外，几乎所有牙齿近远中径在男女之间均未显示出统计学上的显著差异。
本研究提供了沙特人群恒牙近远中径的标准，这些标准比以前公布的标准更新、更完整。沙特恒牙近远中径似乎存在一些向性别差异发展的长期趋势。
