Shireen Ayesha, Ara Syeda Arshiya
Department of Oral and Maxillofacial Sciences, Al-Farabi College, Jeddah, Saudi Arabia.
Department of Oral Medicine and Radiology, Al-Badar Rural Dental College And Hospital, Gulbarga, Karnataka, India.
J Forensic Dent Sci. 2016 Sep-Dec;8(3):145-149. doi: 10.4103/0975-1475.195120.
This study was conducted to assess the sex determination potential from mesiodistal (MD) and buccolingual (BL) dimensions of permanent maxillary first molar.
The study was conducted in the Department of Oral Medicine and Radiology, Al-Badar Rural Dental College and Hospital, Gulbarga, Karnataka, on 600 subjects (300 male and 300 female), aged 17-25 years. The subjects were selected based on the inclusion and exclusion criteria set forth for the study. After obtaining informed consent, the intraoral measurements of MD and BL dimensions on casts of the first maxillary molars were taken using digital vernier caliper with resolution of 0.01 mm.
The data obtained were subjected to statistical analysis using paired and unpaired -test to compare MD and BL dimensions between males and females. ≤0.05 was considered statistically significant.
The mean MD width of the first maxillary molar was 10.60 ± 0.6644 mm (right) and 10.60 ± 0.6644 mm (left) in males and 10.40 ± 0.6255 mm (right) and 10.40 ± 0.6255 mm (left) in females. The mean BL width of the first maxillary molar was 11.60 ± 1.2227 mm (right) and 11.60 ± 1.2227 mm (left) in males and 11.20 ± 0.8440 mm (right) and 11.20 ± 0.8440 mm (left) in females. The differences between males and females in MD and BL dimensions measured were statistically significant ( < 0.05). Right and left MD dimensions exhibited sexual dimorphism of 1.92% and right and left BL dimensions exhibited sexual dimorphism of 3.57%.
The MD and BL dimensions of the maxillary first molars may be used as an aid in sex discrimination.
本研究旨在评估根据恒牙上颌第一磨牙的近远中径（MD）和颊舌径（BL）来判断性别的可能性。
本研究在卡纳塔克邦古尔伯加市阿尔 - 巴达尔农村牙科学院及医院的口腔医学与放射科进行，研究对象为600名年龄在17 - 25岁之间的受试者（300名男性和300名女性）。受试者根据本研究设定的纳入和排除标准进行选取。在获得知情同意后，使用分辨率为0.01毫米的数字游标卡尺对上颌第一磨牙模型进行MD和BL径的口内测量。
对获得的数据进行统计分析，采用配对和非配对t检验来比较男性和女性之间的MD和BL径。P≤0.05被认为具有统计学意义。
男性上颌第一磨牙的平均MD宽度右侧为10.60±0.6644毫米，左侧为10.60±0.6644毫米；女性右侧为10.40±0.6255毫米，左侧为10.40±0.6255毫米。男性上颌第一磨牙的平均BL宽度右侧为11.60±1.2227毫米，左侧为11.60±1.2227毫米；女性右侧为11.20±0.8440毫米，左侧为11.20±0.8440毫米。测量的男性和女性之间MD和BL径的差异具有统计学意义（P<0.05）。右侧和左侧MD径的性二态性为1.92%，右侧和左侧BL径的性二态性为3.57%。
上颌第一磨牙的MD和BL径可作为性别鉴别的辅助手段。
