HOSA Dental Terminology Practice

What is the incisal ridge?

1. A flattened surface across the maxillary teeth

2. Rounded ridge form of the incisal portion of an anterior tooth

3. The area where the roots of the teeth meet

4. The tip of the canine teeth

The correct answer is: Rounded ridge form of the incisal portion of an anterior tooth

The incisal ridge refers to the sharp, cutting edge located at the incisal portion of anterior teeth, such as incisors and canines. This ridge plays a crucial role in the function of these teeth, particularly in biting and cutting food. Its rounded form provides a natural contour that is essential for esthetics and the proper interdigitation between opposing teeth during occlusion. Understanding the term also involves recognizing its relationship to other tooth structures; for instance, it is differentiated from the broader, flatter surfaces that may exist on other areas of the tooth, such as the occlusal surfaces of posterior teeth, and does not pertain to root formation or specific features of canines alone. Therefore, the definition of the incisal ridge is accurately captured as the rounded ridge form of the incisal portion of an anterior tooth.