Fig. 1.

Vertical dimension of occlusion (VDO) measurement. (A) The VDO was measured the distance between the zenith of the gingival contour of upper right central incisor and lower right central incisor in maximal intercuspation (B) Put the acrylic leaf gauge in the interocclusal space continuously to increase the VDO to 3 mm, 5 mm, and 8 mm (C) The dental impression brown compound was used to record the maxillao-mandibular relationship in the increasing VDO status (D) Fill the space of the acrylic leaf gauge with dental impression brown compound in the increasing VDO status.