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VOLUME 15 , ISSUE 4 ( July-August, 2014 ) > List of Articles

RESEARCH ARTICLE

Influence of Fiber Post Cementation Length on Coronal Microleakage Values in vitro and Finite Element Analysis

César Dalmolin Bergoli, Rodrigo Furtado de Carvalho, Ivan Balducci, Josete Barbosa Cruz Meira, Maria Amélia Máximo de Araújo, Marcia Carneiro Valera

Citation Information : Bergoli CD, de Carvalho RF, Balducci I, Meira JB, de Araújo MA, Valera MC. Influence of Fiber Post Cementation Length on Coronal Microleakage Values in vitro and Finite Element Analysis. J Contemp Dent Pract 2014; 15 (4):444-450.

DOI: 10.5005/jp-journals-10024-1560

Published Online: 01-08-2014

Copyright Statement:  Copyright © 2014; The Author(s).


Abstract

Aim

This study aims to evaluate, the influence of different fiber posts cementation lengths by finite element analysis (FEA) and coronal microleakage.

Materials and methods

Fifty anterior bovine teeth were sectioned to obtain roots with 16 mm length. The coronal length of the post was 6 mm for all groups, while the radicular length were varied 6, 8, 10 or 12 mm. The fiber posts surfaces were cleaned with alcohol and silanized. Then the posts were cemented using a two steps total etch-and-rinse adhesive system + conventional resin cement. Forty teeth were submitted to mechanical cycling (45°; 2.000.000 cycles; 90N; 4Hz; 37°C) and ten teeth with radicular length of 12 mm was not submitted, serving as control. So, the experimental design was composed by different ratios of post coronal length/post radicular length and mechanical cycling (MC): Gr1- 1/1 + MC; Gr2- 3/4 + MC; Gr3- 3/5 + MC; Gr4- 1/2 + MC. All groups were immersed in a 1% toluidine blue solution. After 24 hours, the teeth were longitudinally sectioned and the microleakage scores was given by a blind operator. Data were submitted to Kruskal-Wallis test (p = 0.05). The experimental variables were simulated in twodimensional finite element analysis (2D-FEA). The maximum principal stress distributions were compared.

Results

No difference was observed in microleakage values between the cycled groups, whilst the control groups showed the lowest values. FEA analysis showed similar maximum principal stress distribution between the groups.

Conclusion

Mechanical cycling affected the values of coronal microleakage and different cementation length generated similar values of coronal microleakage and stress distribution.

Clinical significance

These results showed that from the microleakage point of view, more conservative cementation lengths have the same effect as longer cementation lengths.

How to cite this article

Bergoli CD, de Carvalho RF, Balducci I, Meira JBC, de Araújo MAM, Valera MC. Influence of Fiber Post Cementation Length on Coronal Microleakage Values in vitro and Finite Element Analysis. J Contemp Dent Pract 2014; 15(4):444-450.


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  1. Intracoronal reinforcement and coronal coverage: a study of endodontically treated teeth. J Prosthet Dent 1984;51(6):780-784.
  2. Ferrule design and fracture resistance of endodontically treated teeth. J Prosth Dent 1990;63(5):529-536.
  3. Clinical behavior of translucent-fiber posts: a 2-year prospective study. Int J Prosthodont 2003;16(6):593-596.
  4. Clinical evaluation of teeth restored with quartz fiber-reinforced epoxy resin posts. Int J Prosthodont 2003;16(1):39-44.
  5. A review of the management of endodonticaly treated teeth: Post, core and the final restoration. J Am Dent Assoc 2005;136(5):611-619.
  6. Is adhesive cementation of endodontic posts necessary? J Endod 2008;34(8):1006-1010.
  7. An in vitro comparison of different cementation strategies on the pull-out strength of a glass fiber post. Oper Dent 2009;34(4):443-451.
  8. Effect of post length on the fatigue resistance of bovine teeth restored with bonded fiber posts: a pilot study. Int J Prosthodont 2006;19(5):504-506.
  9. Effects of post system and length on the strain and fracture resistance of root filled bovine teeth. Int Endod J 2008;41(6):493-501.
  10. Influence of post material and length on endodonticaly treated incisors: an in vitro and finite element study. J Prosthet Dent 2010;104(6):379-388.
  11. The dentin-root complex: anatomic and biologic considerations in restoring endodontically treated teeth. J Prosthet Dent 1992;67(4):458-467.
  12. Light transmission through a translucent fiber post. J Endod 2008;34(3):299-302.
  13. Influence of dentin bonding agents and polymerization modes on the bond strength between translucent fiber posts and three dentin regions within a post space. J Prostet Dent 95(5):368-378.
  14. Coronal leakage as a cause of failure in root-canal therapy: a review. Endod Dent Traumatol 1994;10(3):105-108.
  15. Microleakage of endodontically treated teeth with different dowel systems. J Prosthet Dent 2004;92(2):163-169.
  16. Materials science and engineering: an introduction. 7th ed. Wiley Asia Student Ed. New York: John Wiley and Sons; 2007;p 227-238.
  17. Microleakage and fracture patterns of teeth restored with different posts under dynamic loading. J Prosthet Dent 2007;98(4):270-276.
  18. Photoelastic and finite element stress analysis of a restored axisymmetric first molar. J Biomech 1973 Sep;6(5):511-520.
  19. Finite element analysis and Bond strength of a glass post to intraradicular dentin: comparison between microtensile and push-out tests. Dent Mater 2008;24(10):1405-1411.
  20. Changes in compaction stress distributions in roots resulting from canal preparation. Int Endod J 2006 Dec;39(12):931-939.
  21. Influence of root embedment material and periodontal ligament simulation on fracture resistance tests. Braz Oral Res 2005;19(1):11-16.
  22. Evaluation of four cementation strategies on the push-out Bond strength between fiber post and root dentin. Gen Dent 2011;59(6):498-502.
  23. Comparison of two techniques for evaluation of coronal leakage along of a glass fiber post. J Dent 2010;7(3):124-131.
  24. Microleakage in overflared root canals restored with different fiber reinforced dowels. Oper Dent 2008;33(1):96-105.
  25. Microleakage of endodonticaly treated teeth restored with fiber posts and composite cores after cyclic loading: a confocal microscopic study. J Prosthet Dent 2001 March;85(3):284-291.
  26. Microleakage of a single bottle adhesive system with 3 restorative materials: in vitro study and clinical considerations. Compend Conti Educ Dent 2003;24(10):755-758.
  27. The effect of different restoration techniques on the fracture resistance of endodonticaly-treated molars. Oper Dent 2008;33(5):526-533.
  28. Effect of post-retained composite restoration of MOD preparations on the fracture resistance of endodontically treated teeth. J Adhes Dent 2007;9(1):49-56.
  29. Can fiber posts increase root stresses and reduce fracture? J Dent Res 2010;89(6):587-591.
  30. Microtensile bond strength of light-and self-cured adhesive systems to intraradicular dentin using a translucent fiber post. Operative Dentistry 2005;30(4):500-506.
  31. The contribution of friction to the dislocation resistance of bonded fiber posts. J Endodont 2005;31(8):608-612.
  32. Light transmission through fiber post: the effect on adhesion, elastic modulus and hardness of dual cure resin cement. Dent Mater 2009;25:837-844.
  33. Multi step adhesive cementation versus one-step adhesive cementation: push-out bond strength between fiber post and root dentin before and after mechanical cycling. Gen Dent 2011;59(5):185-191.
  34. Microleakage of endodontically treated teeth restored with posts. J Endod 1998;24(11):703-708.
  35. Effect of fatigue on core integrity and post microleakage of teeth restored with different post systems. J Endod 2003;29(2):125-131.
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