A Comparability Between the Translucency Of different veneering materials And Aging Effect On them (In Vitro Study)

Aims: The aim of this research was to study the effect artificial aging on translucency four different veneering restorations. Materials and methods: Twenty laminate veneers were prepared prefabricated metal dies upper right central incisors with incisal lap preparation design using CAD-CAM system from materials (Zircad Prime "ZP", DD cubeX2 ML "DD", CopraSupreme Symphony "WP", IPS E.max CAD), 0.5 mm thicknesses. samples divided into equal groups five each material, done in steam autoclave at (134c) (0.2 Mpa) for hours according (ISO 13356). TP tested a (3nh) colorimeter. Statistical analysis ANOVA level significant 5%. Results: mean parameter (TP) between examined shows that lithium disilicate Zircad prime (ZP) showed differences, while White Peak (WP) Direct Dental (DD) no difference. Conclusions: material ZP affected by aging, other types zirconia including WP not due their structural composition.