A comparative study of root canal shaping using protaper universal and protaper next rotary files in preclinical dental education

Dentistry has undergone an evolution in endodontics practice caused by the advancement of rotary techniques for root canal preparation and their subsequent incorporation into the teaching of dentistry undergraduates. This research aimed to evaluate the shaping ability of third-year dental students a...

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Bibliographic Details
Published in:PeerJ (San Francisco, CA) CA), 2019-08, Vol.7, p.e7419, Article e7419
Main Authors: Çelik, Gül, Özdemir Kısacık, Feyza, Yılmaz, Emir Faruk, Mersinlioğlu, Arife, Ertuğrul, İhsan Furkan, Orhan, Hikmet
Format: Article
Language:English
Subjects:
Analysis
Biotechnology
College students
Comparative literature
Curricula
Curriculum
Dentistry
Education
Fractures (Geology)
Metal fatigue
Performance evaluation
Plant structures
Preclinic
Protaper
Protaper next
Root canal therapy
Root canals
Rotary techniques
Stainless steel
Teachers
Working hours
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Summary:Dentistry has undergone an evolution in endodontics practice caused by the advancement of rotary techniques for root canal preparation and their subsequent incorporation into the teaching of dentistry undergraduates. This research aimed to evaluate the shaping ability of third-year dental students as their first experience in rotary instrumentation using ProTaper Universal (PTU) and ProTaper Next (PTN) (Dentsply Maillefer) rotary instruments in simulated curved canals. Forty students instrumented 200 simulated canals with a 40° curvature in resin blocks according to the manufacturer's instructions with PTU and 39 students and 195 canals with PTN files. The canals were prepared at a speed of 300 rpm using a 16:1 reduction hand-piece powered by an electric motor (Xsmart; Dentsply Maillefer). The final apical preparation was set to F2 for the PTU and X2 for the PTN group. The change in canal curvature was evaluated based on Schneider technique using the AutoCAD 2007 software on post-digital photographs. The incidence of instrument fracture and deformation, the incidence of ledge, the change in working length (WL), and the working time were noted. The data were analyzed with Student's -test and Chi-Square test at a significance level of 0.05 using SPSS. PTN maintained the original canal curvature better, resulting in fewer fractures and ledges, and shaped the canals faster than the PTU (  
ISSN:2167-8359
2167-8359
DOI:10.7717/peerj.7419