Digital dental cast placement in 3-dimensional, full-face reconstruction: A technical evaluation
Digital dental cast placement in 3-dimensional, full-face reconstruction: A technical evaluation
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DOI：
10.1016/j.ajodo.2009.10.035
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发表时间：
2010-07-01
影响因子：
3
通讯作者：
Ferrario, Virgilio F.
中科院分区：
文献类型：
--
作者：
Rosati, Riccardo;De Menezes, Marcio;Ferrario, Virgilio F.
介绍：几种非侵入性方法用于三维（3D）面部和牙齿形态分析，以帮助医生在诊断和治疗计划期间。结合牙面无创三维复制，可提高治疗管理效果。方法：使用三维立体摄影测量成像系统（Vectra, Canfield Scientific, Fairfield， NJ）对11名成人的牙齿虚拟模型和软组织面部形态进行数字集成。然后利用Vectra软件获得3个面部标志（N，鼻窦；Ftr，右额颞部；Ftl，左额颞部）和3个牙齿标志（I，门牙内；Pr， PI，左右第一恒前臼齿中前庭尖尖）的数字三维坐标。此外，使用三维计算机电磁数字化仪（体内）直接对每个受试者的相同6个地标的坐标进行数字化。在咬合平面（Pr-I-Pl）和面部标志（Ftr-N-Ftl）之间进行了7次线性测量。通过体内测量和重复采集来检验重建的准确性和可靠性。结果：测量结果的最大平均相对误差小于1.2%。在可重复繁殖方面没有发现显著差异。结论：将面部立体摄影测量采集与牙科激光扫描再现相结合是可行的，误差很小。[J]中华口腔颌面矫正外科杂志，2010;38(4):391 - 391。
Introduction: Several noninvasive methods are used for 3-dimensional (3D) morphologic facial and dental analysis to aid practitioners during diagnosis and treatment planning. Integrating dental and facial noninvasive 3D reproduction could improve the efficacy of treatment management. Methods: Dental virtual model and soft-tissue facial morphology were digitally integrated from 11 adults with a 3D stereophotogrammetric imaging system (Vectra, Canfield Scientific, Fairfield, NJ). The digital 3D coordinates of 3 facial landmarks (N, nasion; Ftr, frontotemporale right; Ftl, frontotemporale left) and 3 dental landmarks (I, interincisor; Pr, PI, tips of the mesiovestibular cusps of the right and left first permanent premolars) were then obtained by using Vectra's software. Additionally, the coordinates of the same 6 landmarks were digitized directly on each subject by using a 3D computerized electromagnetic digitizer (in vivo). Seven linear measurements were made between the occlusal plane (Pr-I-Pl) and the facial landmarks (Ftr-N-Ftl). The accuracy and reliability of the reconstruction were tested by in-vivo measurements and repeated acquisitions. Results: The greatest mean relative error of measurements was smaller than 1.2%. No significant differences in repeatable reproductions were found. Conclusions: Integration of facial stereophotogrammetry acquisition and dental laser scan reproduction is possible with marginal error. (Am J Orthod Dentofacial Orthop 2010;138:84-8)