4Rafe Z, Vardimon A, Ashkenazi M. Comparative study of 3 types of toothbrushes in patients with fixed orthodontie appliance. Am J Orthod Dentofac Orthop, 2006,130 ( 1 ) :92-95.
5Borutta A, Pala E, Fischer T. Effectiveness of a powered toothbrush compared with a manual toothbrush for orthodontic patients with fixed appliances. J Clin Dent, 2002,13 (2) : 131-137.
6Banks PA, Richmond S, Enamel sealants. A clinical evaluation of their value during fixed appliance therapy. Eur J Orthod, 1994,16 (1):19-25.
7Ristic M,Vlahovic SM, Sasic M,et al. Effects of fixed orthodontic appliances on subgingival microflora[J]. International Journal of Dental Hygiene, 2008,6(2): 129 - 136.
8Livas C, Kuijpers - Jagtman AM, Bronkhorst E, et al. Quantifica- tion of white spot lesions around orthodontic brackets with image analysis[J]. Angle Orthod,2008,78(4) :585 - 590.
9Maxfield BJ, Hamdan AM. Development of white spot lesions dur- ing orthodontic treatment : Perceptions of patients, parents,ortho- dontists,and general dentists[J]. Am J Orthod Dentofaeial Or- thop,2012,141 (3) :337 -44.
10Corry A,Millett DT,Creanor SL,etal. Incidence of white spot for- mation after bonding and banding[J]. J Orthod Dentofacial Or- thop,2003,30(4) :323 - 329.
