Effectiveness and safety of rotary and reciprocating kinematics for retreatment of curved root canals: a systematic review of in vitro studies
Simoes Lucas Pinho, dos Reis-Prado Alexandre Henrique, Bueno Carlos Roberto Emerenciano, Viana Ana Cecilia Diniz, Duarte Marco Antonio Hungaro, Cintra Luciano Tavares Angelo, Lemos Cleidiel Aparecido Araujo, Benetti Francine,
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( Simoes Lucas Pinho ) - Universidade Federal de Minas Gerais School of Dentistry Department of Restorative Dentistry
( dos Reis-Prado Alexandre Henrique ) - Universidade Federal de Minas Gerais School of Dentistry Department of Restorative Dentistry
( Bueno Carlos Roberto Emerenciano ) - Sao Paulo State University School of Dentistry Department of Restorative Dentistry
( Viana Ana Cecilia Diniz ) - Universidade Federal de Minas Gerais School of Dentistry Department of Restorative Dentistry
( Duarte Marco Antonio Hungaro ) - University of Sao Paulo School of Dentistry Department of Dentistry, Endodontics and Dental Materials
( Cintra Luciano Tavares Angelo ) - Sao Paulo State University School of Dentistry Department of Restorative Dentistry
( Lemos Cleidiel Aparecido Araujo ) - Federal University of Juiz de Fora School of Dentistry Department of Dentistry
( Benetti Francine ) - Universidade Federal de Minas Gerais School of Dentistry Department of Restorative Dentistry
Abstract
Objectives: This systematic review (register-osf.io/wg7ba) compared the efficacy and safety of rotary and reciprocating kinematics in the removal of filling material from curved root canals.
Materials and Methods: Only in vitro studies evaluating both kinematics during retreatment were included. A systematic search (PubMed/MEDLINE, Scopus, and other databases, until January 2021), data extraction, and risk of bias analysis (Joanna Briggs Institute checklist) were performed. Efficacy in filling removal was the primary outcome.
Results: The search resulted in 2,795 studies, of which 15 were included. Efficacy was measured in terms of the remaining filling material and the time required for this. Nine studies evaluated filling material removal, of which 7 found no significant differences between rotary and reciprocating kinematics. Regarding the time for filling removal, 5 studies showed no difference between both kinematics, 2 studies showed faster results with rotary systems, and other 2 showed the opposite. No significant differences were found in apical transportation, centering ability, instrument failure, dentin removed and extruded debris. A low risk of bias was observed.
Conclusions: This review suggests that the choice of rotary or reciprocating kinematics does not influence the efficacy of filling removal from curved root canals. Further studies are needed to compare the kinematics safety in curved root canals.
키워드
Curved root canals; Nickel-titanium instruments; Reciprocating; Retreatment; Rotary kinematics
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