HOSA Dental Terminology Practice

Which class represents a normal occlusal relationship?

1. Class I

2. Class II

3. Class III

4. Class IV

The correct answer is: Class I

Class I represents a normal occlusal relationship, which is characterized by the proper alignment of the maxillary (upper) and mandibular (lower) teeth when the mouth is closed. In this class, the first molar of the lower jaw is positioned slightly behind the first molar of the upper jaw, providing an ideal interdigitation where the upper teeth slightly overlap the lower teeth. This arrangement allows for efficient chewing and proper functioning of the teeth and jaws. Understanding Class I occlusion is essential because it serves as the baseline for identifying other classes of occlusion, such as Class II and Class III, which indicate different types of malocclusions where the teeth are not properly aligned. Recognizing normal occlusal relationships helps dental professionals in diagnosing and planning treatment for patients with dental concerns.