publication Thesis An in-‐vitro evaluation of wear effects of CAD/CAM Cobalt Chromium on human enamel and restorative materials Publication Work Type ماجستير more of publication The commissure line of the mouth for orienting the occlusal plane This study investigated the positional relation of the commissure line of the mouth to the maxillary first molars. Thirty-five volunteers, 20 to 40 years old, with normal natural dentitions were… 2015 An in-‐vitro evaluation of wear effects of CAD/CAM Cobalt Chromium on human enamel and restorative materials