A Test of the Demirjian method of dental ageing using a mixed population sample from Northern Ontario

摘要

AbstractDentition is commonly used to determine age because disease and nutritional factors minimally impact dental maturation. This study evaluated the use of Demirjian’s method of estimating age for a population from Sudbury, Ontario, Canada. A sample of 245 panoramic radiographs, taken from male and female children aged 5–16?years of varying ancestries, was collected from two local dental practices. Eight radiographs were excluded due to distortion or congenitally missing teeth. The results indicate a general over-estimation of age across all ages, with the only significant under-estimation of age evident in 15 and 16 year-olds. Inter- and intra-observer agreement has been documented for both boys and girls. This study yielded a Sudbury-specific set of standards for applying Demirjian’s method of dental ageing.