Effect of different digital technology on the adaptation and retention of Co-Cr partial denture frameworks.

Purpose: To evaluate the overall adaptation and retention of class I cobalt-chromium (Co-Cr) removable partial denture (RPD) frameworks using three different computer-aided design and computer-aided manufacturing (CAD-CAM) technologies: Indirect wax milling with lost wax technique (LWT), direct milling, and selective laser melting (SLM) technique.

Materials And Methods: An educational maxillary stone model (Kennedy class I) was scanned after preparing rest seats to create a resin model. The resin model was scanned, and the RPD framework was digitally designed and saved as a standard tessellation language (STL) file.

Subtractive versus additive indirect manufacturing techniques of digitally designed partial dentures.

Purpose: The purpose of this study was to evaluate the accuracy of digitally designed removable partial denture (RPD) frameworks, constructed by additive and subtractive methods castable resin patterns, using comparative 3D analysis.

Materials And Methods: A Kennedy class III mod. 1 educational maxillary model was used in this study.