Dental Assistant Practice Exam

In which classification does a retrognathic profile fall under?

1. Class I

2. Class II

3. Class III

4. Class IV

The correct answer is: Class II

A retrognathic profile is characterized by the mandible (lower jaw) being positioned further back than the maxilla (upper jaw). This positioning creates a distinct facial appearance in which the chin may appear less prominent, resulting in a convex facial profile. Class II malocclusion is specifically defined as having the first molar of the lower jaw positioned more to the back of the dental arch in relation to the corresponding upper molar. This classification aligns with a retrognathic profile, as the backward placement of the mandible is an essential feature of Class II. In this scenario, not only the molar relationship matters but also the overall facial profile, which is indicative of the relationship between the dental arches and the position of the jaws. While Class I and Class III refer to more balanced jaw relationships (the former showing normal occlusion, and the latter indicating a prognathic profile with the lower jaw protruding), Class II specifically accommodates the characteristics associated with a retrognathic profile. Therefore, the classification of a retrognathic profile is indeed Class II.