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Shaping Ability of Single-file Systems with Different Movements: A Micro-computed Tomographic Study
Joedy Santa-Rosa1, Manoel Damião de Sousa-Neto2, Marco Aurelio Versiani2
1Department of Operative Dentistry and Endodontics, Dental College of Pernambuco, University of Pernambuco, Pernambuco, Brazil;
Iranian Endodontic Journal
|July 30, 2016
Summary
The WaveOne and OneShape single-file systems effectively prepared curved root canals in maxillary molars, showing minimal canal transportation and minor changes in curvature. Both systems demonstrated comparable shaping abilities.
Area of Science:
- Endodontics
- Dental Materials Science
- Biomaterials
Background:
- Evaluating endodontic instruments for complex root canal anatomy is crucial.
- Severe root curvatures pose challenges in achieving thorough canal preparation.
- Micro-computed tomography (micro-CT) offers precise 3D analysis of root canal morphology.
Purpose of the Study:
- To compare the shaping ability of WaveOne (reciprocating) and OneShape (rotary) single-file systems.
- To evaluate canal transportation and preparation efficacy in severely curved mesiobuccal (MB) root canals.
- To standardize samples and assess preparation using micro-CT.
Main Methods:
- Ten severely curved MB root canals were prepared using either WaveOne or OneShape systems (n=5 per group).
- Pre- and post-instrumentation micro-CT scans were analyzed to assess shaping ability and canal transportation.
- Statistical analysis included Kolmogorov-Smirnov and t-tests with a significance level of 0.05.
Main Results:
- Canal instrumentation increased surface area and volume.
- Canal transportation was observed in all thirds, with no significant difference between WaveOne and OneShape systems (P>0.05).
- Significant differences were noted in apical third roundness and perimeter between the groups (P<0.05).
Conclusions:
- Both WaveOne and OneShape single-file systems are effective for shaping severely curved root canals.
- These systems produced minimal changes to the original canal curvature.
- The study provides valuable insights into the performance of single-file systems in complex endodontic cases.
