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Evaluation of the Joypex 5 and Root ZX II : an in vivo and ex vivo study
Author(s) -
Soares R. M. V.,
Silva E. J. N. L.,
Herrera D. R.,
Krebs R. L.,
CoutinhoFilho T. S.
Publication year - 2013
Publication title -
international endodontic journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.988
H-Index - 119
eISSN - 1365-2591
pISSN - 0143-2885
DOI - 10.1111/iej.12078
Subject(s) - ex vivo , in vivo , apical foramen , root canal , mathematics , biomedical engineering , medicine , dentistry , biology , microbiology and biotechnology
Aim To evaluate in vivo and ex vivo the accuracy of the multifrequency electronic root canal length measurement device ( ERCLMD ) Joypex 5 and compare it with the Root ZX II . The ex vivo methodology for evaluation of the accuracy of ERCLMD s was also validated by comparison with in vivo results. Methodology Twenty single‐rooted human teeth that were scheduled for extraction were selected. Working length measurements were performed in vivo with the Joypex 5 and Root ZX II . After the teeth were extracted, each canal was measured with the ERCLMD s ex vivo . Then, a size 15 K‐file was used to determine the reference working length ( RWL ), which was established 0.5 mm from the major foramen by direct observation. The measurements of working length obtained with the different methods and ERCLMD s were compared by analysis of variance and Tukey's test at P < .05. Statistical correlations were also performed. Results No significant difference was observed between in vivo and ex vivo measurements or the different types of ERCLMD s. The Bland–Altman plot confirmed the agreement of different methods and ERCLMD s to measure canal length. The R 2 coefficient obtained in both situations, comparing the ERCLMD s, was close to 1, denoting a strong agreement between measurements obtained with the Joypex 5 and Root ZX II and between in vivo and ex vivo methodologies. Conclusion The Joypex 5 and Root ZX II had similar accuracy in determining working length of root canals. The ex vivo methodology for evaluation of the accuracy of ERCLMD s was validated when compared with the in vivo results.