Staining and aging-dependent changes in color of CAD-CAM materials.

Statement Of Problem: Consumption of some beverages and aging may affect the color of dental materials used in fixed prosthodontics, but their effect on recently introduced materials is not well known.

Purpose: The purpose of this in vitro study was to evaluate staining, aging, and the exposure interval on color changes of computer-aided design and computer-aided manufacturing (CAD-CAM) resin nanoceramics (RNC), polymer-infiltrated ceramic-network (PICN) materials, and lithium silicate and lithium disilicate ceramics.

Material And Methods: A total of 288 square-shaped, 1-mm-thick specimens prepared from Cerasmart, IPS e.