方法：25颗离体直根管前牙，随机分为5组，不锈钢K锉常规法预备根管，应用5种冲洗剂组合进行冲洗。
METHODS: 25 extracted human maxillary anterior teeth, with a single straight root were randomly divided into 5 groups. They were instrumented with K-files and conventional preparation technique.
方法：25颗离体直根管前牙，随机分为5组，不锈钢K锉常规法预备根管，应用5种冲洗剂组合进行冲洗。
METHODS: 25 extracted human maxillary anterior teeth, with a single straight root were randomly divided into 5 groups. They were instrumented with K-files and conventional preparation technique.
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