Digital dental cast placement in 3-dimensional, full-face reconstruction: A technical evaluation

Riccardo Rosati, Marcio De Menezes, Alberto Rossetti, Chiarella Sforza, Virgilio F. Ferrario

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
Pages (from-to)84-88
Number of pages5
JournalAmerican Journal of Orthodontics and Dentofacial Orthopedics
Volume138
Issue number1
DOIs
Publication statusPublished - Jul 2010

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ASJC Scopus subject areas

  • Orthodontics

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