Abstract
Purpose
Compare canal transportation and dentin removal using micro computed tomography (micro-CT) and measure instrumentation time in the root canal preparation of primary molars using K-files, ProDesign Logic and Reciproc files.
Methods
A representative sample of 81 root canals of primary molars was randomised into three groups: K-files (#15-40), ProDesign Logic (#25) and Reciproc (R25). A single-trained operator prepared all root canals. A standardised micro-CT evaluation was performed before and after instrumentation using the CTan® program. Instrumentation time was also recorded. Statistical analysis involved one-way ANOVA, Tukey’s post hoc test, Kruskal–Wallis test and Dunn’s test, considering a 5% level of significance.
Results
Reciproc led to more canal transportation than K-files and ProDesign Logic (p < 0.001) in middle third, whereas K-files led to the most canal transportation in the apical third (p = 0.017). ProDesign Logic and Reciproc removed less dentin on the opposite side of the root curvature in the apical third compared to K-files (p = 0.008). Instrumentation time was better with ProDesign Logic and Reciproc than K-files (p < 0.001).
Conclusion
ProDesign Logic demonstrated good results with regard to canal transportation and required less instrumentation time in primary molars. Reciproc and K-files led to the most canal transportation in the middle and apical third, respectively.
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Acknowledgements
The authors are grateful to the Coordination for the Improvement of Higher Education Personnel (CAPES) for financial support (financial code: 001).
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This study was funded by Coordination for the Improvement of Higher Education Personnel (CAPES) (financial code: 001).
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All authors contributed to the study conception and design. Material preparation, data collection and analysis were performed by JCB, MPA and MB. The first draft of the manuscript was written by JCB and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Barasuol, J.C., Alcalde, M.P., Bortoluzzi, E.A. et al. Shaping ability of hand, rotary and reciprocating files in primary teeth: a micro-CT study in vitro. Eur Arch Paediatr Dent 22, 195–201 (2021). https://doi.org/10.1007/s40368-020-00530-0
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DOI: https://doi.org/10.1007/s40368-020-00530-0