Influence of the Pecking Motion Frequency on the Cyclic Fatigue Resistance of Endodontic Rotary Files
Zubizarreta-Macho, A. ; Alvarez, J.M. ; Martinez, A.A. ; Segura-Egea, J.J. ; Brucheli, J.C. ; Agustin-Panadero, R. ; Piriz, R.L. ; Alonso-Ezpeleta, O. (Universidad de Zaragoza)
Resumen: Purpose: 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.
Idioma: Inglés
DOI: 10.3390/jcm9010045
Año: 2020
Publicado en: JOURNAL OF CLINICAL MEDICINE 9, 1 (2020), 45 [13 pp]
ISSN: 2077-0383
Factor impacto JCR: 4.241 (2020)
Categ. JCR: MEDICINE, GENERAL & INTERNAL rank: 39 / 169 = 0.231 (2020) - Q1 - T1
Tipo y forma: Article (Published version)
Área (Departamento): Área Estomatología (Dpto. Cirugía)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
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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.
Idioma: Inglés
DOI: 10.3390/jcm9010045
Año: 2020
Publicado en: JOURNAL OF CLINICAL MEDICINE 9, 1 (2020), 45 [13 pp]
ISSN: 2077-0383
Factor impacto JCR: 4.241 (2020)
Categ. JCR: MEDICINE, GENERAL & INTERNAL rank: 39 / 169 = 0.231 (2020) - Q1 - T1
Tipo y forma: Article (Published version)
Área (Departamento): Área Estomatología (Dpto. Cirugía)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. Exportado de SIDERAL (2021-09-02-08:53:27)
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Record created 2020-06-09, last modified 2021-09-02