ACCURACY OF CAD/CAM SURGICAL GUIDES OF TITANIUM AND THERMOPLASTIC TO GENIOPLASTY

Abstract

Purpose: to analyze the accuracy of two different CAD / CAM guides for genioplasty through 3D image overlays: biocompatible thermoplastic CAD / CAM guide dental support and fixation through preformed plate and group two: titanium CAD / CAM guide bone support and fixation with customized plate. Materials and methods: prospective study involving two groups of eight patient. The overlap of 3D images of the virtual and postoperative planning determining the difference in millimeters of the movements. The calculations were performed using the 3D interactive proximity algorithm and the linear method. Results: using a 3D method, the thermoplastic guide showed a mean of 0.24 mm and standard deviation (SD) 1.06 mm while the mean titanium value was 0.25 mm and DP 0.79 mm. using the linear method, the thermoplastic presented a mean of 0.98 mm and a DP of 0.83. 91.7% of the movements were smaller than 2 mm and 65.2% below 1 mm. In titanium, mean of 0.81 mm and SD of 0.72. 91.7% of the movements were smaller than 2 mm and 69.4% were smaller than 1 mm. Conclusion: Thermoplastic and titanium CAD / CAM guides are reliable and acuracy methods for genioplasty.