Mohammed, H. A., and O. S. Ali. “Three-Dimensional Surface Evaluation and Shear Bond Strength of Three Pre-Treatment E-Max Surfaces for Metal and Ceramic Orthodontic Brackets: In Vitro Study”. Polytechnic Journal, vol. 10, no. 2, Dec. 2020, pp. 113-8, doi:10.25156/ptj.v10n2y2020.pp113-118.