Arbabzadeh F, Birang E, Nazem R, Abbasian M, Koosha F, Birang R. A Comparative Study on Micro Hardness and Structural Changes of Dentin Floor Cavity Prepared by Er: YAG Laser Irradiation and Mechanical Bur. , 3. 2012; 6 (6) URL: http://idai.ir/article-1-2431-en.html