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Evaluation of three different rotary systems during endodontic retreatment: analysis by scanning electron microscopy

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Evaluation of three different rotary systems during endodontic retreatment: analysis by scanning electron microscopy

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dc.contributor.author Vidal, Flávia-Teixeira es
dc.contributor.author Nunes, Eduardo es
dc.contributor.author Horta, Martinho Campolina Rebello es
dc.contributor.author Freitas, Maria-Rita-Lopes-da es
dc.contributor.author Silveira, Frank-Ferreira es
dc.date.accessioned 2016-05-26T09:33:01Z
dc.date.available 2016-05-26T09:33:01Z
dc.date.issued 2016 es
dc.identifier.citation Vidal, Flávia-Teixeira ; Nunes, Eduardo ; Horta, Martinho Campolina Rebello ; Freitas, Maria-Rita-Lopes-da ; Silveira, Frank-Ferreira. Evaluation of three different rotary systems during endodontic retreatment: analysis by scanning electron microscopy. En: Journal of Clinical and Experimental Dentistry, 2016, Vol. 8, No. 2: 125-129 es
dc.identifier.uri http://hdl.handle.net/10550/53781
dc.description.abstract Background: Endodontic therapy is considered a series of important and interdependent steps, and failure of any of these steps may compromise the treatment outcome. This study aimed to evaluate the effectiveness of three different rotary systems in removing obturation materials during endodontic retreatment using scanning electron microscopy (SEM) analysis. Material and Methods: Thirty-six endodontically treated teeth were selected and divided into 3 groups of 10 and 1 control group with 6 dental elements. The groups were divided according to the rotary system used for removing gutta-percha, as follows: G1: ProTaper system; G2: K3 system; G3: Mtwo system; and G4: Control group. Thereafter, the roots were split and the sections were observed under SEM, for analysis and counting of clear dentinal tubules, creating the variable “degree of dentinal tubule patency” (0: intensely clear; 1: moderately clear; 2: slightly clear; 3: completely blocked). The data were subjected to the Friedman and Kruskal-Wallis statistical tests. Results: No differences were observed in the “degree of dentinal tubule patency” neither between the root thirds (to each evaluated group) nor between the groups (to each evaluated third). Nevertheless, when the three root thirds were grouped (providing evaluation of all root extension), the “degree of dentinal tubule patency” was lower in G1 than in G3 ( p <0.05), but showed no differences neither between G1 and G2 nor G2 and G3. Conclusions: No technique was able to completely remove the canal obturation material, despite G1 having shown better results, although without significant difference to G2 en_US
dc.subject Odontología es
dc.subject Ciencias de la salud es
dc.title Evaluation of three different rotary systems during endodontic retreatment: analysis by scanning electron microscopy es
dc.type journal article es_ES
dc.subject.unesco UNESCO::CIENCIAS MÉDICAS es
dc.type.hasVersion VoR es_ES

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