Objectives: To assess the effects of ART in the preventio n of dental caries in school children.Methods: Standard instrument s and procedures of ART were used in 191 fissure seal in 140 children aged 12～1 3 years. The material used was a high-strength glass-ionomer material (Ketac-M olar, ESPE). The treatments were evaluated annually after ART by clinical examin ation.Results: The cumulative 1-,2- and 3-year retention rat es of the sealant were 89.6%,78.8% and 71.9% respectively. The incidence of recu rrent caries 2 years and 3 years after ATR was 1.6% and 2.8% respectively. Conclusion: ART approach for preventing tooth decay in school childre n is effective.
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