Chaudhry Kirti, Talwar Manjit, Vanga Narasimha Rv, Lehl Gurvanit K, Choudhary Ashish, Patnana Arun K
Department of Dentistry, All India Institute of Medical Sciences, Jodhpur, Rajasthan, India.
Department of Dentistry, Government Medical College and Hospital, Chandigarh, Haryana, India.
Int J Clin Pediatr Dent. 2020 Jan-Feb;13(1):16-20. doi: 10.5005/jp-journals-10005-1708.
The present study aimed to evaluate and compare the applicability of Demirjian, Willems, and Haavikko methods of dental age estimation in southeastern (Dravidian ethnicity) and northwestern regions (Aryan ethnicity) of the Indian population.
The study includes the orthopantomographs (OPGs) of 303 individuals (173 males and 130 females) of age ranging from 5 to 14 years. The participants in the present research were evaluated under two study groups: group I: participants of the southeastern region and group II: participants of the northwestern region. Dental age was calculated using Demirjian, Willems, and Haavikko methods and compared with the chronologic age of each participant. The accuracy of dental age estimation methods was evaluated by mean absolute error. One-way analysis of variance (ANOVA) and Student's tests were used to test the significant difference between the chronologic age and estimated dental ages.
The Demirjian method showed overestimation, while Willems and Haavikko methods showed underestimation for boys and girls in both the ethnic groups of Indian population. The Willems method of dental age estimation showed comparatively more accurate and reliable results in both the ethnic groups of the Indian population.
The dental age estimation by Demirjian, Willems, and Haavikko methods showed no significant variation between the different ethnicities of the Indian population.
The present research will be helpful in pedodontic, orthodontic, and forensic investigations for accurate and reliable dental age estimation in different parts of Indian population.
Chaudhry K, Talwar M, Vanga NRV, A Comparative Evaluation of Three Different Dental Age Estimation Methods in India: A Test of Ethnic Variability. Int J Clin Pediatr Dent 2020;13(1):16-20.
本研究旨在评估和比较Demirjian、Willems和Haavikko三种牙齿年龄估计方法在印度东南部（达罗毗荼族裔）和西北部地区（雅利安族裔）人群中的适用性。
本研究纳入了303名年龄在5至14岁之间的个体（173名男性和130名女性）的口腔全景片（OPG）。本研究中的参与者被分为两个研究组进行评估：第一组：东南部地区的参与者；第二组：西北部地区的参与者。使用Demirjian、Willems和Haavikko方法计算牙齿年龄，并与每个参与者的实际年龄进行比较。通过平均绝对误差评估牙齿年龄估计方法的准确性。采用单因素方差分析（ANOVA）和学生t检验来检验实际年龄与估计牙齿年龄之间的显著差异。
在印度人群的两个族裔中，Demirjian方法显示高估，而Willems和Haavikko方法显示低估男孩和女孩的牙齿年龄。Willems牙齿年龄估计方法在印度人群的两个族裔中均显示出相对更准确和可靠的结果。
Demirjian、Willems和Haavikko方法进行的牙齿年龄估计在印度人群的不同族裔之间没有显著差异。
本研究将有助于儿童牙科、正畸和法医调查中对印度不同地区人群进行准确可靠的牙齿年龄估计。
Chaudhry K, Talwar M, Vanga NRV, 印度三种不同牙齿年龄估计方法的比较评价：种族变异性测试。《国际临床儿科牙科杂志》2020；13(1):16 - 20。
