90 patients(251 teeth)with wedge-shaped defects were included and randomly divided into the study group(45 patients with 125 teeth,treated with flowable resin filling)and the control group(45 patients with 126 teeth,treated with composite resin).The success rates were compared between the 2 groups.The results showed that the success rate of flowable resin was basically the same with that of com-posite resin,and the clinical operation time was shorter.
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