2017. Effects of Diode Laser 940 nm with and without 5 % Sodium Fluoride White Varnish with Tri-calcium Phosphate on Dentin Permeability (In vitro study). Iraqi Journal of Laser. 17, B (Nov. 2017), 17–25. DOI:https://doi.org/10.31900/ijl.v17iB.23.