Department of Prosthodontics, College of Dentistry, Yonsei University, Seoul, South Korea.
Department of Prosthodontics, College of Dentistry, Yonsei University, Seoul, South Korea.
J Prosthodont Res. 2019 Jan;63(1):120-124. doi: 10.1016/j.jpor.2018.10.003. Epub 2018 Nov 13.
To introduce a new and simple digital workflow to record dynamic occlusion, and apply it to occlusal analysis and prosthetic treatment in a virtual environment.
A table-top scanner (Identica hybrid) was used to transfer fabricated casts into a virtual environment. A facial scanner (Rexcan CS2) was used for facial scanning and target tracking. Four targets were attached to each of the four incisors in the maxilla and mandible to track jaw movement. Target position data were recorded in real time during eccentric movement. The targets were replaced with maxilla and mandible cast scan data, and mandibular movement relative to the maxilla was reconstructed. Four types of antagonist meshes were reconstructed in computer-aided design (CAD) software (EzScan8). The CAD software (Exocad) enabled checking of occlusal contacts in the maximal intercuspation position during eccentric movement.
Target tracking data were transformed into video clips of dental cast scan data, which showed jaw movements in real time. Occlusal contact information was produced by the CAD software. Both dynamic and static occlusion analyses were performed with reconstructed eccentric movement antagonist meshes. Our new method for reconstructing eccentric movements of the mandible can reveal the occlusal dynamics of a patient within a virtual environment.
介绍一种新的简单数字工作流程来记录动态咬合，并将其应用于虚拟环境中的咬合分析和修复治疗。
使用台式扫描仪（Identica hybrid）将制作好的模型转移到虚拟环境中。使用面部扫描仪（Rexcan CS2）进行面部扫描和目标跟踪。在上颌和下颌的每颗切牙上各粘贴四个目标，以跟踪颌骨运动。在偏心运动过程中实时记录目标位置数据。将目标替换为上颌和下颌模型扫描数据，重建下颌相对于上颌的运动。在计算机辅助设计（CAD）软件（EzScan8）中重建了四种类型的对颌网格。CAD 软件（Exocad）可以在偏心运动过程中检查最大咬合位置的咬合接触情况。
目标跟踪数据被转换为牙模扫描数据的视频片段，可以实时显示颌骨运动。通过 CAD 软件生成咬合接触信息。通过重建偏心运动的对颌网格进行动态和静态咬合分析。我们重建下颌偏心运动的新方法可以在虚拟环境中揭示患者的咬合动态。
