Al-Najjar TM, Ali FA. Shear bond strength of stainless steel brackets bonded to porcelain surface treated with 1.23% acidulated phosphate fluoride gel compared to hydro fluoric acid with silane coupling agent (In vitro comparative study). J Bagh Coll Dent. 2013;25(Special Is):167-173. Accessed May 2, 2025. https://www.jbcd.uobaghdad.edu.iq/index.php/jbcd/article/view/218