DANB General Chairside Practice Test

Which tooth is classified as a nonsuccedaneous tooth?

1. A) Incisor

2. B) Primary molar

3. C) First permanent molar

4. D) Canine

The correct answer is: C) First permanent molar

A nonsuccedaneous tooth is defined as a tooth that does not replace a primary tooth. In the context of dental anatomy, primary teeth are eventually replaced by permanent teeth in a process known as succedaneous dentition. The first permanent molar fits this definition of being a nonsuccedaneous tooth. It emerges in the mouth around the age of six and does not replace any of the primary molars; instead, it comes in behind the arch of primary teeth. Thus, it is considered a nonsuccedaneous tooth, as it is not connected to the shedding of any primary teeth. In contrast, incisors, canines, and primary molars are all classified differently. Incisors and canines are considered succedaneous because they replace their respective primary predecessors, while primary molars are simply part of the primary dentition and are replaced by the permanent premolars. This understanding underscores the unique relationship between permanent molars and primary teeth, highlighting why the first permanent molar is classified as nonsuccedaneous.