Abdel Aziz Manal H, Badr El Dine Fatma M M, Saeed Nourhan M M
Forensic Medicine & Clinical Toxicology Department, Faculty of Medicine, Alexandria University, Egypt.
J Forensic Leg Med. 2016 Nov;44:103-110. doi: 10.1016/j.jflm.2016.10.003. Epub 2016 Oct 8.
Identification of sex and ethnicity has always been a challenge in the fields of forensic medicine and criminal investigations. Fingerprinting and DNA comparisons are probably the most common techniques used in this context. However, since they cannot always be used, it is necessary to apply different and less known techniques such as lip prints.
Is to study the pattern of lip print in Egyptian and Malaysian populations and its relation to sex and populations difference. Also, to develop equations for sex and populations detection using lip print pattern by different populations (Egyptian and Malaysian).
The sample comprised of 120 adults volunteers divided into two ethnic groups; sixty adult Egyptians (30 males and 30 females) and sixty adult Malaysians (30 males and 30 females). The lip prints were collected on a white paper. Each lip print was divided into four compartments and were classified and scored according to Suzuki and Tsuchihashi classification. Data were statistically analyzed.
The results showed that type III lip print pattern (intersected grooves) was the predominant type in both the Egyptian and Malaysian populations. Type II and III were the most frequent in Egyptian males (28.3% each), while in Egyptian females type III pattern was predominant (46.7%). As regards Malaysian males, type III lip print pattern was the predominant one (41.7%), while type II lip print pattern was predominant (30.8%) in Malaysian females. Statistical analysis of different quadrants showed significant differences between males and females in the Egyptian population in the third and fourth quadrants. On the other hand, significant differences were detected only in the second quadrant between Malaysian males and females. Also, a statistically significant difference was present in the second quadrant between Egyptian and Malaysian males. Using the regression analysis, four regression equations were obtained.
在法医学和刑事调查领域，识别性别和种族一直是一项挑战。指纹识别和DNA比对可能是这方面最常用的技术。然而，由于它们并非总能使用，因此有必要应用不同的、鲜为人知的技术，如唇纹识别。
研究埃及和马来西亚人群的唇纹模式及其与性别和人群差异的关系。此外，利用不同人群（埃及人和马来西亚人）的唇纹模式开发用于性别和人群检测的方程。
样本由120名成年志愿者组成，分为两个种族群体；60名成年埃及人（30名男性和30名女性）和60名成年马来西亚人（30名男性和30名女性）。唇纹采集在白纸上。每个唇纹被分为四个区域，并根据铃木和土桥分类法进行分类和评分。对数据进行统计分析。
结果显示，III型唇纹模式（交叉沟纹）在埃及和马来西亚人群中均为主要类型。II型和III型在埃及男性中最为常见（各占28.3%），而在埃及女性中III型模式占主导地位（46.7%）。至于马来西亚男性，III型唇纹模式占主导地位（41.7%），而在马来西亚女性中II型唇纹模式占主导地位（30.8%）。对不同象限的统计分析表明，埃及人群中男性和女性在第三和第四象限存在显著差异。另一方面，马来西亚男性和女性之间仅在第二象限检测到显著差异。此外，埃及和马来西亚男性在第二象限也存在统计学显著差异。通过回归分析，得到了四个回归方程。
