目的评价ProTaper镍钛锉预备磨牙根管的临床效果.方法选取84颗患有牙髓炎的磨牙,随机分为两组,分别使用ProTaper镍钛锉和不锈钢K锉预备根管,使用侧压法充填根管,记录器械分离数和根管预备时间,术后疼痛例数,根据X线片评价根管预备效果.结果两组器械预备根管后,ProTaper组根管形态良好率为92.4%,不锈钢K锉组为51.7%,二者差异有统计学意义.ProTaper组术后疼痛反应的比例明显低于不锈钢K锉组(P<0.05).ProTaper组根管预备时间明显低于不锈钢K锉组(P<0.05).结论 ProTaper预备磨牙根管的成形效果好,用时短,术后疼痛反应少.% Objective To evaluate the clinical effect of ProTaper in preparation ofmolars’ root canals. Methods 84 molarswere randomly divided into two groups and prepared by ProTaper and stainless steelK files. All canalswere obturatedwith lateral condensationmethod.The incidence of instrumentseperation and post-operative painwere recorded. The efficiency ofprep-aration was analyzed with radiograph. Results In ProTaper group, 92.4%of the canalswere achieved continuous funnel shapes after preparation, while 51.7%of the canalswere achieved in stainless steelK files group.The difference between two groupswas statistically significant.Therewasmore post-operative pain in the stainless steelK files group than in the ProTaper group(P<0.05). Therewas no statistically significance of instrumentseperation between two groups. Conclusion ProTaper performed good shaping ability in molars’ root canals and generated less post-operative pain.
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