in dentistry, that part of an articulator on which the anterior guide pin rests to maintain the vertical dimension of occlusion and the incisal guide angle as established by the incisal guidance; may be adjustable, with a changeable superior surface that may be changed to provide variations in the incisal guide angle, or customized, being individually formed in plastic to allow other than straight line incisal guidance in eccentric movements. SYN: anterior guide.