A mandibular manipulator instrument used as a standalone tool or with associated mouthpiece that includes two interlocking laterally sliding frames which interlock to create a movable upper and a lower incisor pull driven by a pair of pinion shafts and shaped for receiving a patients central incisor teeth. A screw thread is used to provide a precise lateral motion for the sagittal measurement. The mouthpiece is constructed of resilient rubber. The mandibular manipulator may be positioned and held in a resilient flexible mouthpiece by the two pinions protruding through acoustically tight apertures respective to each pinions position. The manipulator can be used for other application in an embodiment without the mouthpiece and/or in combination with a bite registration shape that is part of the manipulator frame.
