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An analysis of canal centering using mechanical instrumentation techniques
D A Kosa1, G Marshall, J C Baumgartner
1Oregon Health Sciences University, School of Dentistry, Portland 97201, USA.
Journal of Endodontics
|October 26, 1999
Summary
Quantec 2000 rotary instruments caused more canal transportation apically compared to ProFile Series 29. No significant differences were found between other mechanical instrumentation systems for root canal preparation.
Area of Science:
- Endodontics
- Dental Materials Science
- Biomaterials
Background:
- Root canal preparation aims to clean and shape the root canal system.
- Canal transportation, or the unintended deviation of the preparation path, can compromise treatment outcomes.
- Evaluating mechanical instrumentation systems is crucial for optimizing endodontic procedures.
Purpose of the Study:
- To compare canal transportation in moderately curved root canals using different mechanical instrumentation systems.
- To assess the impact of ProFile Series 29, Quantec 2000, Flex-R files, and Shaping Hedstrom files on canal geometry.
Main Methods:
- Mesial roots of mandibular molars were prepared using four different mechanical instrumentation systems.
- Roots were cross-sectioned at specific levels, and canal tracings were made pre- and post-instrumentation.
- Canal transportation was quantified using a canal centering ratio.
Main Results:
- Quantec 2000 rotary instruments resulted in significantly greater apical transportation compared to ProFile Series 29.
- No significant differences in transportation were observed between other systems or at other levels.
- The direction of transportation was not system-dependent or related to canal curvature.
Conclusions:
- ProFile Series 29 demonstrated less apical transportation than Quantec 2000.
- All tested mechanical instrumentation systems showed comparable canal transportation, except for Quantec 2000 at the apical level.
- ProFile Series 29 offered the fastest preparation time.