Abstract
<h2>Abstract</h2> Equilibrium is the terminus of all closing motion of the mandible. It represents a centered balanced position of the mandible at a fixed vertical height. The method of using time as an element of measure for determining the vertical height has been very successful, and is extremely sensitive to slight variations. The secondary or reverse motion of the mandible, with its axis on the occlusal surfaces of the first bicuspid teeth, permits normal apposition of the teeth, closing of the temporomandibular articulation, and avoids lateral and anterior thrusts which would result from pivoting on the distal margins of the lower molar teeth. The closing of the joint avoids pressure, soreness of the mylohyoid ridge, and a "searching bite." This intermaxillary record as a whole produces a comfortable, efficient, pressure-free set of dentures.
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