Dental Assistant Practice Exam

Class II in Angle's Classifications is characterized by which profile?

1. Normal jaw relations

2. Prognathic profile; underbite

3. Retrognathic profile; overbite

4. Narrow cutting edge of anterior teeth

The correct answer is: Retrognathic profile; overbite

Class II in Angle's Classification is characterized by a retrognathic profile, which means that the mandible (lower jaw) is positioned further back in relation to the maxilla (upper jaw). This positioning typically leads to an overbite, where the upper front teeth overlap the lower front teeth more than normal. In individuals with a Class II classification, the relationship of the molars generally shows that the first molar of the lower jaw is positioned further back than the first molar of the upper jaw. The retrognathic profile often contributes to certain aesthetic and functional aspects of a person's facial structure, as it can affect the alignment of teeth and the overall bite. Understanding this classification helps dental professionals identify and treat various malocclusions effectively. It is also important to note that while some characteristics, like jaw relations and the cutting edges of anterior teeth, are relevant to orthodontic considerations, they do not specifically describe the Class II profile as clearly as the overbite scenario mentioned.