Medina Aída C, Blanco Lucila
Acta Odontol Latinoam. 2014;27(1):34-41.
Dental age is a somatic maturity indicator with importance in clinical and forensic dentistry. The purpose of this study is to compare the applicability of the Demirjian and Willems methods for dental age estimation in a group of Venezuelan children. Panoramic radiographs of 238 Venezuelan children aged 5-13 years were used to assess dental age using the methods described by Demirjian and Willems. Children with unclear panoramic radiographs, dental agenesis, and premature loss of primary teeth were excluded. Mean differences between dental age and chronological age by gender and age groups were estimated (ANOVA, Student tests p = 0.05). For the Demirjian method, the mean difference between dental age and chronological age was 0.62 +/- 0.93 years, statistically significant. The mean overestimation was lower for females than for males (females 0.56 +/- 0.96 years, males 0.67 +/- 0.93 years). For the Willems method, the mean difference between dental age and chronological age was 0.15 +/- 0.97 years, not statistically significant. Accuracy was significantly different between genders, performing best for females (females 0.01 +/- 0.96 years, males 0.29 +/- 0.96 years). The Willems method for age estimation was found to be more accurate than the Demirjian method in this sample of Venezuelan children.
牙龄是一种在临床和法医牙科学中具有重要意义的身体成熟指标。本研究的目的是比较德米尔坚（Demirjian）法和威廉姆斯（Willems）法在一组委内瑞拉儿童中进行牙龄估计的适用性。使用238名5至13岁委内瑞拉儿童的全景X线片，采用德米尔坚和威廉姆斯描述的方法评估牙龄。排除全景X线片不清晰、牙齿先天缺失和乳牙过早脱落的儿童。按性别和年龄组估计牙龄与实际年龄之间的平均差异（方差分析，学生检验，p = 0.05）。对于德米尔坚法，牙龄与实际年龄之间的平均差异为0.62±0.93岁，具有统计学意义。女性的平均高估低于男性（女性0.56±0.96岁，男性0.67±0.93岁）。对于威廉姆斯法，牙龄与实际年龄之间的平均差异为0.15±0.97岁，无统计学意义。不同性别之间的准确性存在显著差异，女性表现最佳（女性0.01±0.96岁，男性0.29±0.96岁）。在这个委内瑞拉儿童样本中，发现威廉姆斯法在年龄估计方面比德米尔坚法更准确。
