The age of the subadult can be approximated by length of the long bone and epiphyseal closure. However, the best technique will be by looking at the teeth growth there are four different growth periods that you can see which is the emergence of deciduous teeth during the second year of life; the eruption of two permanent incisors and the first permanent molar between the ages of six and eight years; emergence of most permanent dentition except for third molars between 10 and 12 years; eruption of the third molars that usually happens around 18 years of age. The adult age can be determined by the wisdom teeth if are visible and have erupted. They also look at six dental structural components which are the attrition, periodontists, secondary
