Which of the following is NOT a type of mandibular movement?

Vertical movement is not typically classified as a distinct type of mandibular movement. Instead, the movements of the mandible are generally categorized into gliding, rotational, and lateral movements.

Gliding refers to the movement of the jaw forward and backward, which occurs in the temporomandibular joint (TMJ) allowing the condyle of the mandible to slide along the articular surface of the temporal bone. Rotational movement involves the hinge-like action of the mandible, primarily during opening and closing of the mouth. Lateral movement involves the side-to-side motion of the mandible, which is essential for chewing and grinding food.

While vertical movement occurs during normal functional activities, it is a result of the combination of these categorized movements rather than a standalone type of mandibular movement. Therefore, it is not highlighted in the same way as gliding, rotational, or lateral movements within the context of discussing the specific classifications of mandibular movement.