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VOLUME 16 , ISSUE 6 ( June, 2015 ) > List of Articles

RESEARCH ARTICLE

Calcium Hydroxide Dressing Influences the Obturation of Simulated Lateral Canals

Karin Milena Jorge, Roberta Ferreira de Carvalho, Verena Luzia Bredt Vieira, Marilisa Carneiro Leão Gabardo, Letícia Machado Gonçalves, Marili Doro Andrade Deonizio

Citation Information : Jorge KM, de Carvalho RF, Vieira VL, Gabardo MC, Gonçalves LM, Deonizio MD. Calcium Hydroxide Dressing Influences the Obturation of Simulated Lateral Canals. J Contemp Dent Pract 2015; 16 (6):468-473.

DOI: 10.5005/jp-journals-10024-1708

Published Online: 01-06-2015

Copyright Statement:  Copyright © 2015; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Aim

The aim of this study was to investigate the influence of calcium hydroxide dressing on the filling of simulated lateral canals by different obturation techniques.

Materials and methods

Sixty single-root-premolars were instrumented. Simulated lateral canals were drilled on each third of the roots. The teeth were divided into four groups: no dressing and obturation by lateral condensation technique (G1), dressing with calcium hydroxide and obturation by lateral condensation technique (G2), no dressing and obturation by hybrid technique (G3) and, dressing with calcium hydroxide and obturation by hybrid technique (G4). The teeth were maintained at 37°C in 100% humidity for 7 days, and obturation techniques were performed. Radiographs were taken and filled or unfilled lateral canals were counted. Data were analyzed using analysis of variance (ANOVA) followed by Tukey's test (α = 5%).

Results

The hybrid technique filled large number of lateral canals as compared to lateral condensation technique, regardless the use of intracanal medication (p < 0.05). Calcium hydroxide decreased the number of lateral canals filled for both lateral and hybrid techniques (p < 0.05). Significant differences were observed when comparing the number of filled and unfilled lateral canals in the same root third of each group (p < 0.05).

Conclusion

Regardless the obturation technique, calcium hydroxide dressing reduced the penetration of filling material in simulated lateral canals.

Clinical significance

The persistence of calcium hydroxide residues reduces the penetration of filling material in simulated lateral canals, possibly representing a potential cause of failure in the future.

How to cite this article

Jorge KM, de Carvalho RF, Vieira VLB, Gabardo MCL, Gonçalves LM, Deonizio MDA. Calcium hydroxide Dressing Influences the Obturation of Simulated Lateral Canals. J Contemp Dent Pract 2015;16(6):468-473.


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  1. Frequency, location, and direction of the lateral, secondary and accessory canals. J Endod 1975 Nov;1(11):361-366.
  2. Effectiveness of different obturation techniques in the filling of simulated lateral canals. J Endod 2001 May;27(5):362-364.
  3. Fate of the tissue in lateral canals and apical ramifications in response to pathologic conditions and treatment procedures. J Endod 2010 Jan;36(1):1-15.
  4. Filling lateral canals: evaluation of different filling techniques. Eur J Dent 2010 Jul;4(3):251-256.
  5. Endodontic failures-an analysis based on clinical, roentgenographic, and histologic findings. II. Oral Surg Oral Med Oral Pathol 1967 Apr;23(4):517-530.
  6. Endodontic failures-an analysis based on clinical, roentgenographic, and histologic findings. Oral Surg Oral Med Oral Pathol 1967 Apr;23(4):500-516.
  7. The enigma of the lateral canal. Dent Clin North Am 1984 Oct;28(4):833-852.
  8. Clinical importance of the presence of lateral canals in endodontics. Gen Dent 2010 Mar-Apr;58(2):e80-83.
  9. Mechanisms of antimicrobial activity of calcium hydroxide: a critical review. Int Endod J 1999 Sep;32(5):361-369.
  10. An evidence-based analysis of the antibacterial effectiveness of intracanal medicaments. J Endod 2004 Oct;30(10):689-694.
  11. Assessment of the antibacterial activity of calcium hydroxide combined with chlorhexidine paste and other intracanal medications against bacterial pathogens. Eur J Dent 2011 Jan;5(1):1-7.
  12. Evaluation of the antibacterial effect of calcium hydroxide in combination with three different vehicles: An in vitro study. Dent Res J (Isfahan) 2012 Mar;9(2):167-172.
  13. Microorganisms from canals of root-filled teeth with periapical lesions. Int Endod J 2003 Jan;36(1):1-11.
  14. Recovery of enterococcus faecalis after single-or multiple-visit root canal treatments carried out in infected teeth ex vivo. Int Endod J 2005 Oct;38(10):697-704.
  15. Influence of different vehicles on the pH of calcium hydroxide pastes. J Oral Sci 2004 Jun;46(2):107-111.
  16. Effectiveness of ultrasonics and calcium hydroxide for the debridement of human mandibular molars. J Endod 1989 Aug;15(8):373-378.
  17. The antimicrobial effect of calcium hydroxide as a short-term intracanal dressing. Int Endod J 1991 May;24(3):119-125.
  18. Removal efficiency of calcium hydroxide dressing from the root canal. J Endod 1999 Feb;25(2):85-88.
  19. Influence of calcium hydroxide dressing on the obturation of simulated lateral canals. J Endod 2002 Feb;28(2):99-101.
  20. Quantitative comparison of calcium hydroxide removal by endoactivator, ultrasonic and protaper file agitation techniques: an in vitro study. J Huazhong Univ Sci Technolog Med Sci 2013 Feb;33(1):142-145.
  21. Dentinal tubule penetration of root canal sealers after root canal dressing with calcium hydroxide. J Endod 1999 Jun;25(6):431-433.
  22. Evaluation of interference of calcium hydroxide-based intracanal medication in filling root canal systems. J Contemp Dent Pract 2011 Sep1;12(5):368-371.
  23. Antimicrobial activity of calcium hydroxide in endodontics: a review. Chonnam Med J 2012 Dec;48(3):133-140.
  24. A comparative evaluation of gutta-percha filled areas in curved root canals obturated with different techniques. Clin Oral Investig 2012 Feb;16(1):225-230.
  25. Histologic investigation of root canal-treated teeth with apical periodontitis: a retrospective study from twenty-four patients. J Endod 2009 Apr;35(4):493-502.
  26. Effects of calcium hydroxide paste as an intracanal medicament on apical seal. J Endod 1990 Aug;16(8):369-374.
  27. Effect of calcium hydroxide and four irrigation regimens on instrumented and uninstrumented canal wall topography. J Endod 1999 Feb;25(2):93-98.
  28. Calcium hydroxide intracanal dressing removal with different rotary instruments and irrigating solutions: a scanning electron microscopy study. Braz Oral Res 2010;21(4):310-314.
  29. Efficacy of NiTi rotary instruments in removing calcium hydroxide dressing residues from root canal walls. Braz Oral Res 2012 Jan-Feb;26(1):19-23.
  30. An evaluation of the apical seal produced by lateral and warm lateral condensation techniques. J Endod 1990 Apr;16(4):170-172.
  31. Warm gutta-percha obturation technique: a critical review. Minerva Stomatol 2011 Jan-Feb;60(1-2):35-50.
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