<abstract xmlns="http://www.w3.org/1999/xhtml"><bold>Objective</bold>: The aim of our study is to compare the ability of two nickel-titanium systems that use different rotation motions to create preparations that could promote a complete filling of the apical third of root canals.<bold>Methods</bold>: We used 36 freshly extracted teeth, randomly divided in two groups, as follows: in Group A we used ProTaper Next, a system characterized by a continuous rotary motion and in Group B the teeth were instrumented with Wave-One, in which the files have a reciprocating motion. All teeth were root filled based on the same protocol, using gutta-percha and AH Plus. The teeth were further prepared for microleakage evaluation based on dye penetration technique, as follows: immersion in 2% methylene blue, longitudinally sectioned and examination of the apical thirds with an operating microscope. The distance of dye penetration along dentin walls was measured using the ImageJ program.<bold>Results</bold>: The comparison between rotational and reciprocating systems showed that reciprocating files significantly promoted a reduced apical microleakage, as demonstrated by unpaired t test, Welch corrected (p=0.0346).<bold>Conclusion</bold>: The use of Wave-One Reciprocating system was considered more effective in the shaping of root canals, as they demonstrating better conditions for the hermetic, tridimensional sealing of apical third of the roots canals.</abstract>

Objective: The aim of our study is to compare the ability of two nickel-titanium systems that use different rotation motions to create preparations that could promote a complete filling of the apical third of root canals.Methods: We used 36 freshly extracted teeth, randomly divided in two groups, as follows: in Group A we used ProTaper Next, a system characterized by a continuous rotary motion and in Group B the teeth were instrumented with Wave-One, in which the files have a reciprocating motion. All teeth were root filled based on the same protocol, using gutta-percha and AH Plus. The teeth were further prepared for microleakage evaluation based on dye penetration technique, as follows: immersion in 2% methylene blue, longitudinally sectioned and examination of the apical thirds with an operating microscope. The distance of dye penetration along dentin walls was measured using the ImageJ program.Results: The comparison between rotational and reciprocating systems showed that reciprocating files significantly promoted a reduced apical microleakage, as demonstrated by unpaired t test, Welch corrected (p=0.0346).Conclusion: The use of Wave-One Reciprocating system was considered more effective in the shaping of root canals, as they demonstrating better conditions for the hermetic, tridimensional sealing of apical third of the roots canals.

Evaluation of the Apical Seal after Root Canal Cleaning and Shaping with Two Nickel-Titanium Systems

George Emil Palade University of Medicine

Pharmacy, Science, and Technology of Targu Mures

Acta Marisiensis - Seria Medica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Objective: The aim of our study is to compare the ability of two nickel-titanium systems that use different rotation motions to create preparations that could...

Evaluation of the Apical Seal after Root Canal Cleaning and Shaping with Two Nickel-Titanium Systems

Published Online: Dec 31, 2019

Page range: 135 - 139

Received: Jul 01, 2019

Accepted: Aug 03, 2019

DOI: https://doi.org/10.2478/amma-2019-0019

Keywords
apical microleakage, ProTaper Next, Wave-One, cleaning and shaping, dye penetration technique

© 2019 Amalia Abageru et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Evaluation of the Apical Seal after Root Canal Cleaning and Shaping with Two Nickel-Titanium Systems

Published Online: Dec 31, 2019

Page range: 135 - 139

Received: Jul 01, 2019

Accepted: Aug 03, 2019

DOI: https://doi.org/10.2478/amma-2019-0019

Keywordsapical microleakage, ProTaper Next, Wave-One, cleaning and shaping, dye penetration technique

© 2019 Amalia Abageru et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
apical microleakage, ProTaper Next, Wave-One, cleaning and shaping, dye penetration technique