Virtual model surgery and wafer fabrication using 2-dimensional cephalograms, 3-dimensional virtual dental models, and stereolithographic technology.
Although several 3-dimensional virtual model surgery (3D-VMS) programs have been introduced to reduce time-consuming manual laboratory steps and potential errors, these programs still require 3D-computed tomography (3D-CT) data and involve complex computerized maneuvers. Because it is difficult to take 3D-CTs for all cases, a new VMS program using 2D lateral and posteroanterior cephalograms and 3D virtual dental models (2.5D-VMS program; 3Txer version 2.5, Orapix, Seoul, Korea) has recently been introduced. The purposes of this article were to present the methodology of the 2.5D-VMS program and to verify the accuracy of intermediate surgical wafers fabricated with the stereolithographic technique. Two cases successfully treated using the 2.5D-VMS program are presented. There was no significant difference in the position of upper dentition after surgical movement between 2.5D-VMS and 3D-VMS in 18 samples (less than 0.10 mm, P > .05, Wilcoxon-signed rank test). The 2.5D-VMS can be regarded as an effective alternative for 3D-VMS for cases in which 3D-CT data are not available.
Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Research Institute, Seoul National University, Seoul, South Korea.
Jin-Young
JY
Choi
Jong-Min
JM
Hwang
Seung-Hak
SH
Baek
D002508:Cephalometry; D003198:Computer Simulation; D017076:Computer-Aided Design; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional / Q000379:methods*; D008297:Male; D008953:Models, Anatomic; D003765:Models, Dental; D056948:Orthognathic Surgical Procedures / Q000295:instrumentation / Q000379:methods*; D010027:Osteotomy / Q000379:methods*; D010347:Patient Care Planning; D011474:Prosthesis Design; D011861:Radiography, Dental / Q000295:instrumentation; D014057:Tomography, X-Ray Computed / Q000295:instrumentation; D055815:Young Adult