The combined effect of light-illuminating direction and enamel rod orientation on color adjustment at the enamel borders of composite restorations.

Objectives: To investigate the effect of light-illuminating direction (from composite or enamel side) on color adjustment at the coronal and cervical enamel borders in composite restorations.

Materials And Methods: Forty cylindrical holes (3.0-mm diameters) were prepared in bovine enamel disks (1.

Influence of enamel prism orientations on color shifting at the border of resin composite restorations.

This study aimed to investigate the influence of enamel prism orientations on color adjustment of resin composite restoration. The color measurements (L*, C*, or h* values) at the restored bovine enamel disk (1.0 mm-thick) with resin composite (Estelite Asteria, Estelite Pro, Kalore, Clearfil Majesty) were performed using a CIE XYZ camera (RC500).

Effect of enamel margin configuration on color change of resin composite restoration.

This study aimed to investigate the effect of enamel margin configuration on color change of resin composite restoration. Enamel disks of 1.0 mm-thick were sliced from sixty bovine anterior teeth and divided into three groups by margin configuration (non-bevel, 45-degree bevel and 45-degree reverse-bevel).