VIRTUAL MODEL OF ARTICULATION FROM INTRA-ORAL SCANS

• Main Authors: RABY RICHARD E, HANSEN ERIC S, DEMLOW STEVEN C, ALVAREZ ALBERTO
• Format: Patent
• Language: Chinese; English
• Published: 01.03.2019
• Subjects: APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE; DENTISTRY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE

The invention provides a method for determining virtual articulation from dental scans. The method includes receiving digital 3D models of a person's maxillary and mandibular arches, and digital 3D models of a plurality of different bite poses of the arches. The digital 3D models of the maxillary and mandibular arches are registered with the bite poses to generate transforms defining spatial relationships between the arches for the bite poses. Based upon the digital 3D models and transforms, the method computes a pure rotation axis representation for each bite pose of the mandibular arch withrespect to the maxillary arch. The virtual articulation can be used in making restorations or for diagnostic purposes. 本发明提供了种用于由牙科扫描确定虚拟关节运动的方法。该方法包括接收人的上颌弓和下颌弓的数字3D模型，以及牙弓的多个不同咬合姿势的数字3D模型。使上颌弓和下颌弓的数字3D模型与咬合姿势配准，以产生限定咬合姿势的牙弓之间的空间关系的变换。基于数字3D模型和变换，该方法计算下颌弓相对于上颌弓的每个咬合姿势的纯旋转轴线表示。所述虚拟关节运动可用于进行修复或用于诊断目的。