000089609 001__ 89609
000089609 005__ 20210902121631.0
000089609 0247_ $$2doi$$a10.3390/jcm9010045
000089609 0248_ $$2sideral$$a117666
000089609 037__ $$aART-2020-117666
000089609 041__ $$aeng
000089609 100__ $$aZubizarreta-Macho, A.
000089609 245__ $$aInfluence of the Pecking Motion Frequency on the Cyclic Fatigue Resistance of Endodontic Rotary Files
000089609 260__ $$c2020
000089609 5060_ $$aAccess copy available to the general public$$fUnrestricted
000089609 5203_ $$aPurpose: To analyze the influence of the pecking motion frequency on the cyclic fatigue resistance of endodontic rotary files.
Material and Methods: Sixty PlexV 25.06 endodontic rotary files were selected and distributed into three groups: 30 movements/min (n = 20), 60 movements/min (n = 20), and 120 movements/min (n = 20). A dynamic cyclic fatigue device was designed using Computer Aided Design/ Computer Aided Engineering (CAD/CAE) technology and manufactured by 3D impressions to simulate the pecking motion performed by an operator. Failures of the endodontic rotary files were detected by a Light-Emitting Diode (LED)/Light-Dependent Resistor (LDR) system controlled by an Arduino-Driver complex and management software. Endodontic rotary files were tested on an artificial root canal manufactured by wire electrical discharge machining (EDM), with similar dimensions to those of the instrument under examination. Endodontic rotary files were used following the manufacturer's recommendations. The results were analyzed by ANOVA and Weibull statistics.
Results: All pairwise comparisons revealed statistically significant differences in all three variables, except for the difference in the number of cycles between the groups with 60 and 120 movements/min (p = 0.298). The scale distribution parameter of Weibull statistics showed statistically significant differences in all three variables, except for the differences in the number of cycles between groups with 30 and 60 movements/min (p = 0.0722). No statistically significant differences in the three variables were observed for the shape distribution parameter.
Conclusion: A low frequency of pecking motion is recommended to reduce the risk of failure of endodontic rotary files associated with cyclic fatigue.
000089609 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000089609 590__ $$a4.241$$b2020
000089609 591__ $$aMEDICINE, GENERAL & INTERNAL$$b39 / 169 = 0.231$$c2020$$dQ1$$eT1
000089609 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000089609 700__ $$aAlvarez, J.M.
000089609 700__ $$aMartinez, A.A.
000089609 700__ $$aSegura-Egea, J.J.
000089609 700__ $$aBrucheli, J.C.
000089609 700__ $$aAgustin-Panadero, R.
000089609 700__ $$aPiriz, R.L.
000089609 700__ $$0(orcid)0000-0003-3868-6784$$aAlonso-Ezpeleta, O.$$uUniversidad de Zaragoza
000089609 7102_ $$11013$$2275$$aUniversidad de Zaragoza$$bDpto. Cirugía$$cÁrea Estomatología
000089609 773__ $$g9, 1 (2020), 45 [13 pp]$$pJ. clin.med.$$tJOURNAL OF CLINICAL MEDICINE$$x2077-0383
000089609 8564_ $$s606198$$uhttps://zaguan.unizar.es/record/89609/files/texto_completo.pdf$$yVersión publicada
000089609 8564_ $$s459112$$uhttps://zaguan.unizar.es/record/89609/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000089609 909CO $$ooai:zaguan.unizar.es:89609$$particulos$$pdriver
000089609 951__ $$a2021-09-02-08:53:27
000089609 980__ $$aARTICLE