Effect of the smear layer on the filling of artificial lateral canals and microleakage

Authors

  • Andréa Gonçalves Moretti University of Campinas, SP
  • Carlos Augusto de Morais Souto Pantoja University of Campinas, SP
  • Danna Mota Moreira University of Campinas, SP
  • Alexandre Augusto Zaia University of Campinas, SP
  • José Flávio Affonso de Almeida University of Campinas, SP

DOI:

https://doi.org/10.20396/bjos.v10i1.8641697

Keywords:

Endodontics, Root canal obturation, Smear layer

Abstract

Aim: To evaluate the influence of the smear layer on the filling and prevention of microleakage in artificial lateral canals after use of different irrigating solutions. Methods: Two lateral canals were produced in 44 human dental roots with drills of 0.1 mm in diameter. The roots were divided in 4 groups according to the irrigation protocol: GI - 0.9% saline solution (control); GII - 2.5% sodium hypochlorite + 17% EDTA; GIII - 2% chlorhexidine gel + 17% EDTA; GIV - 2% chlorhexidine solution + 17% EDTA. Four roots were used as negative (n=2) and positive (n=2) controls. Lateral condensation technique and AH Plus were used to fill the root canals. Digital buccolingual radiographs were exposed and after the sealer had set, the roots were immersed in Indian ink dye and then cleared in methyl salicylate. The extent of filling and microleakage were measured and the values analyzed statistically. Results: No difference was found in the percentage of filling and microleakage among the groups, regardless of the location of the artificial lateral canals and the irrigation protocol used. Twenty percent of lateral canals produced no radiographic images, but their filling was confirmed using the clearing technique. Conclusions: The presence or absence of the smear layer did not affect the filling ability and the prevention of microleakage in artificial lateral canals.

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Author Biographies

Andréa Gonçalves Moretti, University of Campinas, SP

Undergraduate Student, Department of Restorative Dentistry, Endodontics Division, Piracicaba Dental School, University of Campinas, SP

Carlos Augusto de Morais Souto Pantoja, University of Campinas, SP

Graduate Student, Department of Restorative Dentistry, Endodontics Division, Piracicaba Dental School, University of Campinas, SP

Danna Mota Moreira, University of Campinas, SP

Graduate Student, Department of Restorative Dentistry, Endodontics Division, Piracicaba Dental School, University of Campinas, SP

Alexandre Augusto Zaia, University of Campinas, SP

Associate Professors, Department of Restorative Dentistry, Endodontics Division, Piracicaba Dental School, University of Campinas, SP

José Flávio Affonso de Almeida, University of Campinas, SP

Associate Professors, Department of Restorative Dentistry, Endodontics Division, Piracicaba Dental School, University of Campinas, SP

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Published

2015-11-12

How to Cite

1.
Moretti AG, Pantoja CA de MS, Moreira DM, Zaia AA, Almeida JFA de. Effect of the smear layer on the filling of artificial lateral canals and microleakage. Braz. J. Oral Sci. [Internet]. 2015 Nov. 12 [cited 2022 Dec. 6];10(1):55-9. Available from: https://periodicos.sbu.unicamp.br/ojs/index.php/bjos/article/view/8641697

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