Abstract
Purpose
To evaluate the volumetric changes of two recently introduced paediatric rotary file systems in comparison with conventional hand file systems in primary maxillary canines using an ultra-high-resolution nano-computed tomography.
Methods
This in vitro study was performed in extracted primary maxillary canines based on certain inclusion and exclusion criteria. Samples were prepared, and working length was determined after the pre-operative scan using a high-resolution nano-CT device (SkyScan 2214, Bruker, Kontich, Belgium). A single well-experienced paediatric dentist prepared the canals using three file systems: Kedo-S plus, Kedo-SG blue and hand K-files. All samples were subjected to post-operative scans performed similar to pre-operative scans. Image reconstruction was performed with NRecon software for 3D volumetric visualisation and analysis of the root canals.
Results
Kedo-SG blue file systems had the highest mean difference in the canal volume (4.05%). Hand K-files had the least difference at (3.71%) of canal volume. Kedo-S plus file system had a moderate mean canal volume difference (3.82%) which is closer to hand K-files. Intergroup comparison between the three groups showed that the mean difference in canal volume was statistically significant between all three file systems (p = 0.000).
Conclusion
Within the limitations of the current study, rotary file systems produced a significant enlargement of canals as compared to hand files. Kedo-SG blue created a uniform preparation of the canal cervico-apically. Kedo-S plus files were prepared more coronally with minimal preparation apically as close to the preparation of hand files.
Trial registration
Trial registration number: IHEC/SDC/PEDO-2103/22/651, Date of registration: 2022.
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Data availability
Will be made avaialble on request to the correspondong author.
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All authors contributed to the study’s conception and design. Material preparation, data collection and analysis were performed by BS, GJ, VR, SV and PM. The first draft of the manuscript was written by BS, GJ, VR, AAS, SV and PM, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Balaji, S., Jeevanandan, G., Ravindran, V. et al. Comparative evaluation of volumetric changes following rotary and hand files’ canal preparation of primary maxillary canine: an in vitro nano-CT analysis. Eur Arch Paediatr Dent 25, 227–235 (2024). https://doi.org/10.1007/s40368-024-00877-8
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DOI: https://doi.org/10.1007/s40368-024-00877-8