Effectiveness of different obturation techniques in surpassing the ledge formed in simulated curved canals

Authors

  • Marilisa Carneiro Leão Gabardo Pontifical Catholic University of Paraná
  • Wander José da Silva UNICAMP
  • Letícia Machado Gonçalves UNICAMP
  • Marili Doro Andrade Deonízio Federal University of Paraná

DOI:

https://doi.org/10.20396/bjos.v12i2.8641101

Keywords:

Endodontics, Root canal therapy, Root canal obturation, Root canal filling materials

Abstract

Aim: To compare the effectiveness of different obturation techniques in surpassing the ledge formed in simulated curved root canals. Methods: Eighty acrylic-resin blocks with curved canals were instrumented with Gates-Glidden drills to simulate a ledge formation. Then, a K-File #10 was used for trying to surpass the deviation, and the blocks that permitted surpassing were rejected. The remaining blocks were divided into 4 groups according to the obturation technique: lateral condensation, Tagger’s Hybrid technique, Thermafil and System B. The blocks had their images digitalized using a scanner before and after the obturation procedures. The images were analyzed with Image Tool 3.0 software. Statistical analysis was performed by one-way ANOVA at a significant level of 5%. Results: The System B resulted in the highest obturated area (p<0.001). There were no significant differences between the Tagger’s Hybrid technique and Thermafil system regarding the effectiveness in surpassing ledge (p>0.05). The lateral condensation resulted in the worst ability in filling the ledge space (p<0.001). Conclusions: Within the limitations of this study, it was possible to conclude that techniques using heat condensation or gutta-percha thermoplastification were more effective in surpassing the ledge formed in curved canals than the lateral condensation.

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Author Biographies

Marilisa Carneiro Leão Gabardo, Pontifical Catholic University of Paraná

Area of Collective Health, School of Health and Biosciences, Pontifical Catholic University of Paraná, Curitiba, PR.

Wander José da Silva, UNICAMP

Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas, Piracicaba, SP.

Letícia Machado Gonçalves, UNICAMP

Department of Prosthodontics and Periodontology, Piracicaba Dental School, University of Campinas, Piracicaba, SP.

Marili Doro Andrade Deonízio, Federal University of Paraná

Area of Endodontics, Department of Dentistry, Federal University of Paraná, Curitiba, PR.

Published

2015-10-16

How to Cite

1.
Gabardo MCL, Silva WJ da, Gonçalves LM, Deonízio MDA. Effectiveness of different obturation techniques in surpassing the ledge formed in simulated curved canals. Braz. J. Oral Sci. [Internet]. 2015 Oct. 16 [cited 2022 Sep. 28];12(2):138-42. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641101

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