4World Health Organization. Fluorides and Oral Health. WHO Technical Report Series No.846. Geneva: World Health Organization. 1994. 26.
5Marinho VC, Higgins JP, Logan S, et al. Topical fluoride(toothpastes, mouthrinses, gels or varnishes) for preventing dental caries in children and adolescents. Cochrane Database Syst Bey,2003, (4) :CD002782. Review.
6Bratthall D, Hansel-Petersson G, Sundberg H. Reasons for the caries decline: what do the experts believe? Eur J Oral Sci, 1996,104 : 416-422.
7Jones S, Butt BA, Petersen PE, et al. The effective use of fluorides in public health. Bull World Health Organ,2005,83:670-676.
8Petersen PE, Lennon MA. Effective of fluorides for the prevention of dental caries in the 21st century: the WHO approach. Community Dent Oral Epidemiol,2004, 32: 319-321.
9Petersen PE, Peng B, Tai BJ. Oral health status and oral health behavior of the middle-aged and elderly in PR China. Int Dent J,1997,47 : 305-312.
10Zhu L, Petersen PE, Wang HY, et al. Oral health knowledge,attitudes and behaviour of children and adolescents in China. Int Dent J, 2003,53:289-298.
