Tooth Development and Shedding Practice Test

The main idea is the typical eruption order of permanent teeth during the mixed dentition. Around age six, the first permanent teeth to come in are the first molars, which establish the back bite early on. Soon after, the permanent central incisors erupt, followed by the lateral incisors, then the canines. After those come the premolars, then the second molars, with the third molars usually being the last to erupt. This sequence matches what you see in practice: first molars and central incisors appearing early, then the rest in that continued progression. Other options misplace the timing or order—such as central incisors erupting first or premolars coming in before first molars—so they don’t reflect the standard eruption pattern.