PURPOSE: This study investigated errors occurring in three-dimensional (3D) models when plaster dental casts are integrated into them. MATERIALS AND METHODS: Three-dimensional milling models of three patients with a jaw deformity were fabricated using the Endoplan system (SPARC International Inc, Santa Clara, CA). After this, plaster dental casts were integrated into the 3D models using a face-bow transfer system. Two cephalograms were then compared, one obtained from the patient and the other obtained from the 3D model painted with contrast medium. RESULTS: In two cases, the reproducibility of the dental position as determined by angle analysis was within 2 degrees, and that determined by distance analysis was within 2 mm. However, errors over 4 degrees and 4.2 mm, respectively, were observed in one case. CONCLUSION: It is clinically important to confirm the accuracy of the 3D model by cephalometric analysis, and it may be necessary to reposition the dental model based on the results.
PURPOSE: This study investigated errors occurring in three-dimensional (3D) models when plaster dental casts are integrated into them. MATERIALS AND METHODS: Three-dimensional milling models of three patients with a jaw deformity were fabricated using the Endoplan system (SPARC International Inc, Santa Clara, CA). After this, plaster dental casts were integrated into the 3D models using a face-bow transfer system. Two cephalograms were then compared, one obtained from the patient and the other obtained from the 3D model painted with contrast medium. RESULTS: In two cases, the reproducibility of the dental position as determined by angle analysis was within 2 degrees, and that determined by distance analysis was within 2 mm. However, errors over 4 degrees and 4.2 mm, respectively, were observed in one case. CONCLUSION: It is clinically important to confirm the accuracy of the 3D model by cephalometric analysis, and it may be necessary to reposition the dental model based on the results.
Authors: Lucia H C Cevidanes; Ana Emilia Figueiredo Oliveira; Dan Grauer; Martin Styner; William R Proffit Journal: Semin Orthod Date: 2011-03-01 Impact factor: 0.970
Authors: Lucia H C Cevidanes; Alexandre Motta; William R Proffit; James L Ackerman; Martin Styner Journal: Am J Orthod Dentofacial Orthop Date: 2010-04 Impact factor: 2.650
Authors: R C Almeida; L H S Cevidanes; F A R Carvalho; A T Motta; M A O Almeida; M Styner; T Turvey; W R Proffit; C Phillips Journal: Int J Oral Maxillofac Surg Date: 2011-01-05 Impact factor: 2.789