Zimmermann M, et al. - This trial was conducted to assess the internal adaptation and fit of chairside computer-aided design/computer-assisted manufacture (CAD/CAM) fabricated zirconia-reinforced lithium silicate ceramic crowns fabricated with different post-milling protocols. The findings suggested that the internal adaptation of zirconia-reinforced lithium silicate crowns fabricated with a chairside CAD/CAM technique was not affected by the post-milling processing. It was determined that the new 3D computer technique for the evaluation of the fit of restorations could be highly promising.