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Shaping outcomes using two Ni-Ti rotary instruments in simulated canals
T Giovannone1, G Migliau, R Bedini
1Unit of Endodontics, Department of Conservative Dentistry, Umberto I Policlinical, La Sapienza University Rome, Italy.
Minerva Stomatologica
|April 23, 2008
Summary
Both Mtwo and ProTaper rotary instruments demonstrated good shaping ability in curved root canals, maintaining original canal curvature and showing minimal apical transportation. Further research is needed to confirm statistically significant differences.
Area of Science:
- Endodontics
- Dental Materials Science
Background:
- Root canal instrumentation in curved canals presents challenges in maintaining original anatomy.
- Rotary systems like Mtwo and ProTaper are commonly used for root canal preparation.
Purpose of the Study:
- To compare the shaping ability of Mtwo and ProTaper instruments in simulated curved root canals.
- To evaluate the maintenance of original canal curvature and assess apical transportation.
Main Methods:
- 40 simulated curved resin block canals were divided into two groups (20 each) for Mtwo and ProTaper instrumentation.
- Pre- and post-instrumentation images were analyzed using computer image analysis to measure canal shaping and curvature.
- Student's t-test was used for statistical analysis of the results.
Main Results:
- Both Mtwo and ProTaper systems maintained the original root canal curvature, especially in the apical third's outer curve.
- Mtwo instruments resulted in slightly less apical transportation compared to ProTaper, though this difference was not statistically significant (P>0.05).
Conclusions:
- Both Mtwo and ProTaper instruments exhibit good shaping ability in curved canals.
- These systems effectively preserve the original canal curvature and minimize apical transportation.
