Efficacy of reciprocating instruments and final irrigant activation protocols on retreatment of mesiobuccal roots of maxillary molars: a micro-CT analysis
Tietz Lilian, Furlan Renan Diego, da Rosa Ricardo Abreu, Duarte Marco Antonio Hungaro, Alcalde Murilo Priori, Vivan Rodrigo Ricci, Weissheimer Theodoro, So Marcus Vinicius Reis,
소속 상세정보
( Tietz Lilian ) - Federal University of Rio Grande do Sul - UFRGS Department of Conservative Dentistry
( Furlan Renan Diego ) - University of Sao Paulo Bauru School of Dentistry Department of Operative Dentistry, Endodontics and Dental Materials
( da Rosa Ricardo Abreu ) - Federal University of Rio Grande do Sul - UFRGS Department of Conservative Dentistry
( Duarte Marco Antonio Hungaro ) - University of Sao Paulo Bauru School of Dentistry Department of Operative Dentistry, Endodontics and Dental Materials
( Alcalde Murilo Priori ) - Sacred Heart University - UNISAGRADO Health Science Center
( Vivan Rodrigo Ricci ) - University of Sao Paulo Bauru School of Dentistry Department of Operative Dentistry, Endodontics and Dental Materials
( Weissheimer Theodoro ) - Federal University of Rio Grande do Sul - UFRGS Department of Conservative Dentistry
( So Marcus Vinicius Reis ) - Federal University of Rio Grande do Sul - UFRGS Department of Conservative Dentistry
Abstract
Objectives: This study evaluated the efficacy of 3 reciprocating systems and the effects of 2 instruments for irrigant activation on filling material removal.
Materials and Methods: Forty mesiobuccal roots of maxillary molars were prepared up to size 25.06 and obturated. Micro-computed tomography (micro-CT) examination #1 was performed. Teeth were then divided into 4 groups (n = 10), according to the retreatment protocol: (1) manual, (2) Reciproc Blue, (3) WaveOne Gold, and (4) X1 Blue. Micro-CT examinations #2 and #3 were performed after filling removal and repreparation, respectively. Next, all teeth were divided into 2 new groups (n = 20) according to the irrigant activation protocol: XP Clean (XP Clean size 25.02) and Flatsonic (Flatsonic ultrasonic tip). Micro-CT examination #4 was performed after irrigant activation. Statistical analysis was performed with a significance level set at 5%.
Results: WaveOne Gold removed a significantly greater amount of filling material than the manual group (p < 0.05). The time to reach the WL was similar for all reciprocating systems (p > 0.05). X1 Blue was faster than the manual group (p < 0.05). Only manual group improved the filling material removal after the repreparation stage (p < 0.05). Both activation protocols significantly improved the filling material removal (p < 0.05), without differences between them (p > 0.05).
Conclusions: None of the tested instruments completely removed the filling material. X1 Blue size 25.06 reached the working length in the shortest time. XP Clean and Flatsonic improved the filling material removal.
키워드
Endodontic; Retreatment; Micro computed tomography; Reciprocating
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