Effect of the different chromatic filters of the dental operating microscope on the volumetric shrinkage, surface hardness, and depth of cure of bulk fill composite.

Aim: Evaluate the effect of different chromatic filters of the dental operating microscope on the volumetric shrinkage, surface micro-hardness, and depth of cure of bulk-fill composite.

Methods: Bulk fill composite specimens of 4 mm depth, 4 mm width, and 4 mm length were prepared. Five groups were designed based on a light source under which composite samples were condensed.