Objective:The purpose of this clinical trialwas to investigate the effects of atraumatic restorative treatment(ART) underfield conditions, compare it to another treatmentwith amalgam, and survey the acceptability of this approach by patients.Methods:154 teeth were treated using ART, while other 151 teeth were treated using amalgam, and the therapeutic effects of each patient was evaluated after half of year, 1 year and 2 years.Results:Most of the children did not report discomfort during treatment, and 9312% would like to selectARTrather than other treatments. The one-year and two-year success rates of ARTwere 8417% and 6911%. Comparing with those of amalgam restorations (7712% and 6712%), there was no statistical difference (P>0105). However, the two-year recurrent rate of secondary caries treated with ART approach (912%) was obviously lower than that with amalgam treatment (2115%)(P
