Abstract：
The size and shape of a tooth vary between individuals of different ethnic groups and genders because of the influence of different genetic factors. The information regarding the different anatomical factors using maxillary anterior teeth is very scanty. Thus to give more clarity, a study was planned to assess the correlation between head circumference and tooth-mesiodistal width among children of different ethnic origins.The study was carried out on 210 children aged 7 to 12 years in schools at Abha, Saudi Arabia.The mesiodistal (MD) width of the central incisor was measured using a digital vernier caliper. A Meter tape ruler was used to measure the Head/Cephalic dimensions. The data obtained were subjected to statistical analysis using IBM SPSS 20.0, and the results were analyzed. It was found that mean MD tooth width and head circumference were maximum in Saudi children, followed by South Asian and Arab/African, with an insignificant statistical difference (p-value > 0.05). Correlation between MD dimensions of maxillary central incisor with head circumference was statistically significant (p-value < 0.05) among Saudi and South Asian populations, whereas statistically insignificant (p-value > 0.05) difference between Saudi and Arab/African populations. It was concluded that there exist the ethnic differences between tooth-mesiodistal width and head circumference dimensions of children. A positive correlation between head circumference and mesiodistal width of the central incisor was determined.
摘要：
由于不同遗传因素的影响，牙齿的大小和形状在不同种族和性别的个体之间有所不同。关于使用上颌前牙的不同解剖因素的信息很少。因此，为了更清晰，我们计划进行一项研究,以评估不同种族儿童的头围与牙齿中远宽度之间的相关性.这项研究是在Abha学校的210名7至12岁的儿童中进行的，沙特阿拉伯。使用数字游标卡尺测量中切牙的中远（MD）宽度。使用米带尺测量头部/头部尺寸。使用IBMSPSS20.0对获得的数据进行统计分析，并对结果进行分析。发现沙特儿童的平均MD牙齿宽度和头围最大，其次是南亚和阿拉伯/非洲，差异无统计学意义(p值>0.05)。在沙特阿拉伯和南亚人群中，上颌中切牙的MD尺寸与头围之间的相关性具有统计学意义（p值<0.05）。而沙特和阿拉伯/非洲人群之间的差异无统计学意义（p值>0.05）。结论是，儿童的牙齿近端宽度和头围尺寸之间存在种族差异。确定了头围与中切牙的中远端宽度之间的正相关。
