Aracena Daniel, Borie Eduardo, Betancourt Pablo, Aracena Angella, Guzmán Mario
MSc, Dental School, Universidad Mayor, Temuco, Chile.
PhD, Research Centre in Dental Sciences (CICO), Dental School, Universidad de La Frontera, Temuco, Chile.
J Clin Exp Dent. 2017 Mar 1;9(3):e368-e371. doi: 10.4317/jced.53384. eCollection 2017 Mar.
It is very important for a clinician to know the increased wear of mechanized files when establishing endodontic therapy. The aim of this study was to check the wear of the Primary WaveOne file upon shaping two, four and six maxillary molar vestibular canals.
The deterioration of 40 files, divided into four groups, was evaluated microscopically: group 1, control (unused); group 2, two canals; group 3, four canals; and group 4, six canals. After instrumentation, the files were embedded in resin and sectioned at their apical third into three equal parts. To analyze the wear of edges in the different sections, AutoCAD software was used and analysis of variance (ANOVA) was then performed to compare the mean rake angles.
The files with two and four uses showed slight wear, whereas those with six applications showed significant wear (<0.05).
Primary WaveOne files can be used in up to four root canals without their edges losing effectiveness. Files wear, reciprocating motion, shaping capacity, WaveOne.
对于临床医生而言，在制定牙髓治疗方案时了解机用锉的磨损情况非常重要。本研究的目的是检查在对两颗、四颗和六颗上颌磨牙的前庭根管进行预备时，初代WaveOne锉的磨损情况。
将40根锉分为四组，通过显微镜评估其磨损情况：第1组为对照组（未使用）；第2组为预备两根根管；第3组为预备四根根管；第4组为预备六根根管。预备完成后，将锉嵌入树脂中，并在根尖三分之一处切成三个相等的部分。为了分析不同截面边缘的磨损情况，使用了AutoCAD软件，然后进行方差分析（ANOVA）以比较平均前角。
使用两次和四次的锉显示出轻微磨损，而使用六次的锉显示出明显磨损（<0.05）。
初代WaveOne锉可用于多达四根根管的预备，而不会使其边缘失去有效性。锉的磨损、往复运动、预备能力、WaveOne。
