Available online 6 May 2024

Different techniques of transferring the maxillary cast into the analog semi-adjustable articulator by using the true horizontal or gravity reference plane have been reported. However, procedures are required for recording this reference plane and transferring the maxillary cast into the virtual semi-adjustable articulator. In the present manuscript, a technique is described for registering the true horizontal or gravity plane in relationship to the natural head position of the patient by using an optical jaw tracking system. Additionally, the recorded true horizontal plane is used to transfer the maxillary cast into the virtual semi-adjustable articulator by using a dental computer-aided design program. This technique facilitates the maxillary cast transfer into the virtual articulator by using the true horizontal plane recorded with an optical jaw tracking system, maximizing the functionality of the optical jaw tracking device.

Record an intraoral digital scan of the maxillary and mandibular arches by using an IOS (TRIOS 5, wireless; 3Shape A/S) following the scanning pattern endorsed by the manufacturer under optimal ambient lighting conditions.37, 38, 39 Subsequently, obtain a bilateral occlusal record in maximum intercuspal position by using the selected IOS.40, 41 Export the standard tessellation language (STL1) files.

Position the markers42 of the selected optical jaw tracking system (4D Motion Capture System;

A technique for registering the true horizontal or gravity plane in relationship to the NHP of the patient by an using optical jaw tracking system has been described. This technique facilitates the transfer of the maxillary cast to the virtual articulator by using the recorded true horizontal plane. The main purpose of optical jaw tracking systems is to track and record the mandibular motion of the patient; however, this digital data acquisition technology can also be used to transfer the

This article describes a technique for registering the true horizontal or gravity plane in relationship to the natural head position of the patient by using optical jaw tracking systems. The recorded true horizontal plane is used to transfer the maxillary cast to the virtual semi-adjustable articulator.

Written informed consent was obtained prior to submission of the data collected in this technique description.

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