往复运动镍钛锉根管预备成形能力的体外研究
邵彤菲;侯晓玫;侯本祥
【期刊名称】《华西口腔医学杂志》 【年(卷),期】2014(000)006 【
摘
要
】
Objective
??This?study?aims?to?evaluate?the?shaping?capability?of?Reciproc,?WaveOne,?Mtwo,?and?ProTaper?instruments?in?simulated?root?canals.
Methods
??A?total?of?40?simulated?resin?blocks?were?divided?randomly?into?four?groups.?Each?group?was?prepared?with?Reciproc?(Group?1),?WaveOne?(Group?2),?Mtwo?(Group?3),?and?ProTaper?(Group?4).?The?pre-paration?time?and?reduction?in?working?length?after?preparation?were?measured.?Pre-?and?post-operative?images?were?obtained?with?a?scanner?and?superimposed?through?Photoshop.?The?changes?in?canal?curvature?and?material?removal?from?the?inner?and?outer?canal?walls?at?10?points?beginning?at?1?mm?from?the?end?point?of?the?canal?were?measured?with?Image?J.?Centering?capability?was?determined?accordingly.?Data?were?analyzed?through?one-way?ANOVA,?SNK,?and?Kruskal–Wallis?at?a?signi-ficance?level?of?P<0.05.?Results
??The?preparation?time?of?Group?2?was?(53.7±6.7)?s,?whereas?those?of?Groups?1,?3,?and?4?were?(86.9±8.1)?s,?(112.2±8.2)?s,?and?(177.9±11.2)?s,?respectively;?the?difference?was?found?to?be?significant?(P<0.05).?The?reduc-
往复运动镍钛锉根管预备成形能力的体外研究
