Apical and cervical displacement produced by hand and engine-driven stainless steel and nickel-titanium instruments in simulated curved root canal

Authors

  • Benito André Silveira Miranzi University of Uberaba
  • Gilberto Antônio Borges University of Uberaba
  • Almir José Silveira Miranzi University of Uberaba
  • Fernando Hueb de Menezes University of Uberaba
  • Mário Alfredo Silveira Miranzi University of Triângulo Mineiro
  • Luis Henrique Borges University of Uberaba

DOI:

https://doi.org/10.20396/bjos.v10i2.8641658

Keywords:

Root canal Keywords, Preparation, Endodontic instruments, Root canal therapy

Abstract

Aim: The purpose of this study was eval Aim: uate the occurrence of displacement on the apical and cervical thirds of artificial curved root canals with 30° of curvature, comparing the use of stainless steel hand and oscillatory files with nickel-titanium (NI-TI) hand, rotary and oscillatory files. Methods: Methods: Seventy artificial curved root Methods: canals were divided into 7 groups (n=10). All canals were prepared with sizes 15 to 40 instruments at the working length according to a crown-down technique. The amount of material removed in the curved portion of the simulated canals at 2 mm level outside and 11 mm inside was measured. Data were analyzed statistically by ANOVA and Tukey’s test (p<0.05). Results: Results: There was statistically significant Results: differences (p<0.05) at 2 mm level between NI-TI and steel stainless groups. At 11 mm, statistically significant differences (p<0.05) were observed between the groups that used rotary systems (5 and 6) and the remaining groups. Conclusions: Conclusions: The most centered preparations were those belonging to groups 5 and 6, at both levels. Root canal preparation with NI-TI files yielded better results than the stainless steel files especially when mechanically activated.

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Author Biographies

Benito André Silveira Miranzi, University of Uberaba

DDS, PhD, Department of Biomaterials, Dental School, University of Uberaba

Gilberto Antônio Borges, University of Uberaba

DDS, PhD, Department of Biomaterials, Dental School, University of Uberaba

Almir José Silveira Miranzi, University of Uberaba

DDS, PhD, Department of Dental Prosthodontics, University of Uberaba

Fernando Hueb de Menezes, University of Uberaba

DDS, PhD, Department of Biopathology, Dental School, University of Uberaba

Mário Alfredo Silveira Miranzi, University of Triângulo Mineiro

DDS, PhD, Department of Community Medicine, Federal University of Triângulo Mineiro

Luis Henrique Borges, University of Uberaba

DDS, PhD, Department of Biomaterials, Dental School, University of Uberaba

Published

2015-11-10

How to Cite

1.
Miranzi BAS, Borges GA, Miranzi AJS, Menezes FH de, Miranzi MAS, Borges LH. Apical and cervical displacement produced by hand and engine-driven stainless steel and nickel-titanium instruments in simulated curved root canal. Braz. J. Oral Sci. [Internet]. 2015 Nov. 10 [cited 2022 Dec. 4];10(2):136-9. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641658

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