Kolude Bamidele, Akinyele Adisa, Joshua Ogunrinde Tunde, Ahmed Lawal
Department of Oral Pathology, University of Ibadan and University College Hospital, Ibadan, Nigeria.
Department of Restorative Dentistry, University of Ibadan and University College Hospital, Ibadan, Nigeria.
Pan Afr Med J. 2016 Apr 20;23:204. doi: 10.11604/pamj.2016.23.204.8584. eCollection 2016.
This study was conducted to compare the rugae patterns between two major ethnic groups in Nigeria to establish any peculiarities. This will serve as basis for population identification especially in mass disasters involving individuals of different races or ethnicities.
One hundred consenting participants, 50 of south-western Yoruba ethnicity and 50 of south-eastern Igbo ethnicity were recruited; impressions of the upper jaws were taken and cast with dental stone. Two blinded investigators then delineated and recorded the rugae pattern of individual casts. The rugae patterns for the two groups were then analysed using the SPSS version 16.
The Yoruba's had more of wavy and straight patterns while there were more of curve and circular among the Ibo's, however, there was no significant differences between the two groups in the mean incidence of the various rugae shapes of wavy, circular, curve and straight (p = 0.843, p = 0.711, p = 0.309 and p = 0.292 respectively). There were more secondary rugae in the Igbo than the Yoruba group and the differences in the mean incidences were significant.
The study observed several rugae similarities and no significant differences in the primary rugae shapes of the Igbos and Yoruba ethnicities, however, there were significant differences in the sum of secondary and unclassified rugae between the two groups; therefore, rugoscopy may be useful in ethnic differentiation.
本研究旨在比较尼日利亚两个主要族群的腭皱襞模式，以确定是否存在任何独特之处。这将作为人口识别的基础，特别是在涉及不同种族或族裔个体的大规模灾难中。
招募了100名同意参与的参与者，其中50名是西南部约鲁巴族，50名是东南部伊博族；获取上颌印模并用牙科石膏灌模。然后，两名不知情的研究者描绘并记录每个模型的腭皱襞模式。接着使用SPSS 16版对两组的腭皱襞模式进行分析。
约鲁巴族的腭皱襞更多呈现波浪状和直线状，而伊博族则更多为曲线状和圆形，然而，两组在波浪状、圆形、曲线状和直线状等各种腭皱襞形状的平均发生率上没有显著差异（p值分别为0.843、0.711、0.309和0.292）。伊博族的副腭皱襞比约鲁巴族更多，且平均发生率的差异具有统计学意义。
该研究观察到伊博族和约鲁巴族在主要腭皱襞形状上有一些相似之处且无显著差异，然而，两组在副腭皱襞和未分类腭皱襞的总和上存在显著差异；因此，腭皱襞检查可能有助于种族区分。
