6Lovrov S,Hertrich K,Hirschfelder U.Enamel Demineralization during Fixed Orthodontic Treatment-Incidence and Correlation to Various Oral-hygiene Parameters.J Orofac Orthop,2007,68:353-363.
7BUONOCORE MG.A simple method of increasing the adhesion of acrylic filling materials to enamel surfaces.J Dent Res,1955,34:849-853.
8Farhadian N,Miresmaeili A,Eslami B,et al.Effect of fluoride varnish on enamel demineralization around brackets:an in-vivo study.Am J Orthod Dentofacial Orthop,2008,133:S95-98.
9O'Reilly MM,Featherstone JD.Demineralization and remineralization around orthodontic appliances:an in vivo study.Am J Orthod Dentofacial Orthop,1987,92:33-40.
10Artun J,Thylstrup A.A 3-year clinical and SEM study of surface changes of carious enamel lesions after inactivation.Am J Orthod Dentofacial Orthop,1989;95:327-333.