原始版和修订版德米尔坚标准在5至15岁印度儿童年龄估计中的适用性。
The applicability of the original and revised Demirjian standards to age estimations of 5-15 year old Indian children.
作者信息
Hegde S, Patodia A, Dixit U
机构信息
Department of Pediatric Dentistry, Pacific Dental College and Hospital, Udaipur, Rajasthan, India.
Department of Pediatric and Preventive Dentistry, D. Y. Patil University- School of Dentistry, Navi Mumbai, Maharashtra, India.
出版信息
J Forensic Odontostomatol. 2018 May 30;36(1):1-13.
BACKGROUND
The Demirjian method has been the most widely tested method for the estimation of the dental age of children and adolescents. However, only three studies have compared Demirjian's original and revised seven-tooth methods, four-tooth method and alternate four-tooth method, none of them conducted on an Indian population.
AIM
The present study aimed to compare the applicability of the original and revised seven-tooth and four-tooth and alternate four-tooth standards for age estimation of 1200 Indian children aged 5-15 years old.
DESIGN
The study was designed as a retrospective cross-sectional study.
RESULTS
Demirjian's original seven-tooth method overestimated age by 0.64 ± 1.44, 0.75 ± 1.50 and 0.69 ± 1.46 years in boys, girls and the total sample, respectively. Demirjian's revised seven-tooth method overestimated age by + 0.24 ± 0.80, + 0.11 ± 0.81 and + 0.19 ± 0.80 years in boys, girls and the total sample, respectively. Demirjian's original four-tooth method overestimated age by 0.79 ± 1.59, 0.59 ± 2.77 and 0.72 ± 2.30 years in boys, girls and the total sample, respectively. Demirjian's alternate four-tooth method overestimated age by 1.31 ± 1.07, 1.20 ± 1.10 and 1.26 ± 1.08 years in boys, girls and the total sample, respectively. Statistically significant differences were observed between dental and chronological ages with all methods (p <0.001). Significant gender-based differences were observed only with Demirjian's revised seven-tooth and original four-tooth methods (p <0.05). Conclusion: The revised seven-tooth standards most accurately predicted the age of the study sample (mean prediction error = 2.28 months), followed by the original seven-tooth, four-tooth and alternate four-tooth standards. The Demirjian original seven-tooth method was significantly more accurate in boys compared to girls, while the reverse was true for the Demirjian revised seven-tooth and original four-tooth methods.
背景
德米尔坚方法是评估儿童和青少年牙齿年龄应用最为广泛的方法。然而，仅有三项研究比较了德米尔坚最初的和修订后的七颗牙方法、四颗牙方法及替代四颗牙方法，且均未在印度人群中开展。
目的
本研究旨在比较最初的和修订后的七颗牙、四颗牙及替代四颗牙标准在评估1200名5至15岁印度儿童牙齿年龄方面的适用性。
设计
本研究设计为一项回顾性横断面研究。
结果
德米尔坚最初的七颗牙方法在男孩、女孩及总样本中分别高估年龄0.64±1.44岁、0.75±1.50岁和0.69±1.46岁。德米尔坚修订后的七颗牙方法在男孩、女孩及总样本中分别高估年龄+0.24±0.80岁、+0.11±0.81岁和+0.19±0.80岁。德米尔坚最初的四颗牙方法在男孩、女孩及总样本中分别高估年龄0.79±1.59岁、0.59±2.77岁和0.72±2.30岁。德米尔坚替代四颗牙方法在男孩、女孩及总样本中分别高估年龄1.31±1.07岁、1.20±1.10岁和1.26±1.08岁。所有方法的牙齿年龄和实际年龄之间均观察到统计学显著差异（p<0.001）。仅在德米尔坚修订后的七颗牙方法和最初的四颗牙方法中观察到显著的性别差异（p<0.05）。结论：修订后的七颗牙标准对研究样本年龄的预测最为准确（平均预测误差=2.28个月），其次是最初的七颗牙、四颗牙及替代四颗牙标准。德米尔坚最初的七颗牙方法在男孩中比在女孩中显著更准确，而德米尔坚修订后的七颗牙方法和最初的四颗牙方法则相反。
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