4Wong MC, Schwarz E, Lo EC. Patterns of dental caries severity in Chinese kindergarten children[J]. Community Dent Oral Epidemiol, 1997, 25 (5) : 343-347.
5Beltran-Aguilar ED, Goldstein JW, Lockwood SA. Fluoride varnishes. A review of their clinical use, cariostatic mechanism, efficacy and safety[J]. J Am Dent Assoc, 2000, 131 (5):589-596.
6Hu W, Featherstone JD. Prevention of enamel demineralization: An in-vitro study using light-cured filled sealant[J]. Am J Orthod Dentofacial Orthop, 2005, 128(5):592-600; quiz 670.
7Petersson LG, Twetman S, Pakhomov GN. The efficiency of semiannual silane fluoride varnish applications: A two-year clinical study in preschool children[J]. J Public Health Dent, 1998, 58 (1) : 57-60.
8Dohnke-Hohrmann S, Zimmer S. Change in caries prevalence after implementation of a fluoride varnish program[J]. J Public Health Dent, 2004, 64(2):96-100.
9Autio-Gold JT, Courts F. Assessing the effect of fluoride varnish on early enamel carious lesions in the primary dentition[J]. J Am Dent Assoe, 2001, 132 (9) :1247-1253 : quiz 1317-1318.
10Zimmer S, Bizhang M. The effect of a preventive program, including the application of low-concentration fluoride varnish on caries control in high-risk children[J]. Clin Oral Investig, 2001, 5(1):40-44.