Comparative in vitro study of root canal transportation, using three nickel-titanium rotary systems: hero shaper, protaper universal

Authors

  • Marcela Alcota-Rojas Universidad de Chile
  • Gabriela Compán-Catenacci Universidad de Chile
  • Juan Carlos Salinas-Castro Universidad de Chile
  • Ana María Palma-Eyzaguirre Universidad de Chile

Keywords:

Canal preparation, Transportation, Rotary systems

Abstract


Introduction: the objective of this in vitro study was to compare the degree of transportation of root canals using three rotary systems: HERO Shaper, ProTaper Universal, and Race. Methods: a sample of thirty buccal root canals of upper molars with curvatures between 25 and 35º was divided into three random groups of ten canals each, which were then instrumented by using the rotary systems HERO Shaper, ProTaper Universal, and Race respectively, all to a diameter # 30 to the working length, using the motor NSK Endo-Mate TC to control torque and speed. Radiographs were taken before and after mechanical instrumentation, and they were scanned with DuoScan Agfa T1200 scanner at a resolution of 2400 dpi gray scale. Afterwards, by the method of lineal morphometry and using the computer system for digital images NIH imageJ, a total of 12 measurements per root canal were done: 4 for the total root width, 4 for the concave wall and 4 for the convex wall, all at 1, 2, 4 and 6 mm respectively from the radiographic apex of the canal. The data were analyzed by using the Mann Whitney Rank Sum and Kruskal Wallis nonparametric statistical analysis for independent samples. Results: Transportation was observed from the root canal to the concave wall when the ProTaper Universal system was used, being statistically significant (p = 0,01). Conclusion: the ProTaper Universal rotary system produced the greatest number of transportations when compared with HERO Shaper and RaCe systems.

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Author Biographies

Marcela Alcota-Rojas, Universidad de Chile

Endodontics Area, Department of Conservative Dentistry, Facultad de Odontología, Universidad de Chile.

Gabriela Compán-Catenacci, Universidad de Chile

Endodontics Area, Department of Conservative Dentistry, Facultad de Odontología, Universidad de Chile.

Juan Carlos Salinas-Castro, Universidad de Chile

Department of Prosthesis, Facultad de Odontología, Universidad de Chile.          

Ana María Palma-Eyzaguirre, Universidad de Chile

Endodontics Area, Department of Conservative Dentistry, Facultad de Odontología, Universidad de Chile

Published

2011-12-15

How to Cite

Alcota-Rojas, M., Compán-Catenacci, G., Salinas-Castro, J. C., & Palma-Eyzaguirre, A. M. (2011). Comparative in vitro study of root canal transportation, using three nickel-titanium rotary systems: hero shaper, protaper universal. Revista Facultad De Odontología Universidad De Antioquia, 23(1), 9–21. Retrieved from https://revistas.udea.edu.co/index.php/odont/article/view/8111