Govindaram Divyalakshmi, Bharanidharan R, Ramya R, Rameshkumar A, Priyadharsini N, Rajkumar K
Department of Oral and Maxillofacial Pathology and Microbiology, SRM Dental College, Chennai, Tamil Nadu, India.
J Forensic Dent Sci. 2018 May-Aug;10(2):96-100. doi: 10.4103/jfo.jfds_10_18.
Sexual dimorphism in teeth has been an area of research for forensic anthropologists. The function of root in transmitting the forces of occlusion to the alveolar bone varies as the force in males tends to be larger than in females. This shows the significance of the root length as indicators of sexual dimorphism.
The aim of this study was to determine the presence of sexual dimorphism in the root lengths of permanent teeth and to evaluate if root length could be instrumental in defining sexual dimorphism among an ethnic Tamil population.
Orthopantomograms of 1000 individuals (500 males and 500 females) were utilized, and the measurement of root length of permanent maxillary and mandibular teeth from canine to first molar on all four quadrants using the Digital software SCANORA 5.2.6. was carried out. Statistical analysis including descriptive statistics and independent Student -test were performed.
In this study, the sexual dimorphism in root length is observed in 13, 14, 15, 16, 23, 26, 33, 36, 43, and 46 (mesial), and there is a statistically significant difference between the root measurements of males and females ( < 0.05). Most dimorphic teeth were maxillary canines and mandibular canines.
The data generated from this study suggest that the root length measurements present with a substantial evidence of sexual dimorphism emphasizing its importance on identifying sex and are therefore useful in determining the biological profile.
牙齿的性别二态性一直是法医人类学家的研究领域。牙根在将咬合力量传递到牙槽骨中的功能会有所不同，因为男性的力量往往大于女性。这表明牙根长度作为性别二态性指标的重要性。
本研究的目的是确定恒牙牙根长度中是否存在性别二态性，并评估牙根长度是否有助于界定泰米尔族人群中的性别二态性。
使用了1000名个体（500名男性和500名女性）的曲面断层片，并使用数字软件SCANORA 5.2.6对所有四个象限中从尖牙到第一磨牙的上颌和下颌恒牙牙根长度进行测量。进行了包括描述性统计和独立样本t检验在内的统计分析。
在本研究中，在13、14、15、16、23、26、33、36、43和46（近中）观察到牙根长度的性别二态性，男性和女性的牙根测量值之间存在统计学显著差异（<0.05）。大多数具有二态性的牙齿是上颌尖牙和下颌尖牙。
本研究产生的数据表明，牙根长度测量结果提供了大量性别二态性的证据，强调了其在识别性别方面的重要性，因此有助于确定生物学特征。
