S. S. . S. Malik and N. . H. Ghaib, “The effect of nano-hydroxy apatite on re-mineralize white spot lesions prior to orthodontic adhesive removal by different techniques (An In vitro comparative study)”, J Bagh Coll Dent, vol. 29, no. 2, pp. 90–96, Jun. 2017, doi: 10.12816/0038756.