Cone Beam Computed Tomography vs Multislice Computed Tomography in Computer-Aided Design/Computer-Assisted Manufacture Guided Implant Surgery Based on Three-Dimensional Optical Scanning and Stereolithographic Guides: Does Image Modality Matter?

Purpose: Cone beam computed tomography (CBCT) is increasingly overtaking multislice computed tomography (MSCT) for implant planning and computer-aided design/computer-assisted manufacturing (CAD/CAM) surgical guide fabrication. The purpose of this study was to evaluate whether the image modality has a significant influence on the accuracy of image-fusion stereolithographic guides.

Materials And Methods: A total of 240 implants were placed in 30 polymer models using surgical guides fabricated using CBCT or MSCT and optical scanning of dental casts and diagnostic wax-up.

Accuracy of Image-Fusion Stereolithographic Guides: Mapping CT Data with Three-Dimensional Optical Surface Scanning.

Background: Computer-assisted implant surgery usually requires a radiographic scan template as the basis for prosthetic-driven implant planning and surgical guide fabrication.

Purpose: The study aims to evaluate the accuracy of image-fusion stereolithographic guides in which a computed tomography (CT) scan is mapped with three-dimensional optical scans of cast and diagnostic wax-up.

Materials And Methods: Three-dimensional error at the base and tip of the implants, angular deviation of the implant-axis, and the inserting-depth error of 120 implants with a length of 10 mm and a caliber of 4.