The Journal of Contemporary Dental Practice

Register      Login



Volume / Issue

Online First

Related articles

VOLUME 16 , ISSUE 10 ( October, 2015 ) > List of Articles


Evaluation of the Bond Strength and Fracture Resistance of Different Post Systems

Sevinç Aktemur Türker, Bahar Özçelik, Zeliha Yilmaz

Citation Information : Türker SA, Özçelik B, Yilmaz Z. Evaluation of the Bond Strength and Fracture Resistance of Different Post Systems. J Contemp Dent Pract 2015; 16 (10):788-793.

DOI: 10.5005/jp-journals-10024-1758

Published Online: 01-03-2016

Copyright Statement:  Copyright © 2015; The Author(s).



To compare the bond strength and the fracture resistance of different post systems.

Materials and methods

Endodontically treated 60 mandibular incisor and 60 mandibular premolar teeth were used for the bond strength and fracture resistance test respectively. For each test, three groups (n = 20) were formed according to the posts used zirconia posts (ZR post), individually formed glass fiber reinforced composite posts with an (Interpenetrating Polymer Network—IPN post) and cast metal posts. Then groups were randomly assigned into two subgroups according to the post design: 1-parallel sided and 2-tapered (n = 10/group). All posts were luted with a self-adhesive luting agent. For push-out test two 1 mm thick horizontal root sections were obtained and subjected to push-out test. For fracture resistance test, the specimens were loaded vertically at 1 mm/min crosshead speed. The push out test data were analyzed with Kruskal-Wallis and Dunn's test. Analysis of variance (ANOVA) and Tukey significant difference tests were used to compare the fracture resistance.


Cast metal posts showed the highest retention (p < 0.05); however, IPN and zirconia posts showed similar results. No significant difference was found between parallel sided or tapered designs of post groups in terms of bond strength (p > 0.05). In terms of fracture resistance, IPN post groups showed lowest fracture resistance (p < 0.05). No significant difference was found between parallel sided or tapered posts in terms of fracture resistance, except zirconia post (p > 0.05). There was no relationship between the bond strength and fracture resistance of the post systems (r = – 0.015, p > 0.700).


Post type had effect both on the fracture resistance and retention of the posts used. However, post design had effect only on the fracture resistance of the post systems.

Clinical significance

Superficial treatment of the post used can improve the retention of post systems.

How to cite this article

Türker SA, Özçelik B, Yilmaz Z. Evaluation of the Bond Strength and Fracture Resistance of Different Post Systems. J Contemp Dent Pract 2015;16(10): 788-793.

PDF Share
  1. Fracture resistance of teeth restored with post-retained restorations: an overview. J Endod 2010 Sep;36(9):1439-1449.
  2. Intracoronal reinforcement and coronal coverage: a study of endodontically treated teeth. J Prosthet Dent 1984 Jun;51(6):780-784.
  3. Fracture resistance of teeth restored with two different post-and-core designs cemented with two different cements: an in vitro study. Part I. Quintessence Int 2003 Apr;34(4):301-306.
  4. Esthetic considerations in restoring endodontically treated teeth with posts and cores. J Prosthet Dent 1998 Jun;79(6):702-705.
  5. Factors determining post selection: a literature review. J Prosthet Dent 2003 Dec;90(6):556-562.
  6. Retrospective study of the clinical performance of fiber posts. Am J Dent 2000 May;13(Spec No):9B-13B.
  7. Flexural properties of endodontic posts and human root dentin. Dent Mater 2007 Sep;23(9):1129-1135.
  8. Stiffness, elastic limit, and strength of newer types of endodontic posts. J Dent 1999 May;27(4):275-278.
  9. Radiodensity evaluation of seven root post systems. Am J Dent 2005 Feb;18(1):57-60.
  10. Tissue compatibility and stability of a new zirconia ceramic in vivo. J Prosthet Dent 1992 Aug;68(2):322-326.
  11. Survival rate and failure characteristics for two post designs. J Prosthet Dent 1995 May;73(5):439-444.
  12. Retention and failure morphology of prefabricated posts. Int J Prosthodont 2004 May-Jun;17(3):307-312.
  13. Fracture resistance of endodontically treated teeth restored with composite posts. J Prosthet Dent 2003 Apr;89(4):360-367.
  14. Durability of the bond between resin composite cores and prefabricated posts. Acta Odontol Scand 2009;67(5):271-276.
  15. Comparison between regional micropush-out and microtensile bond strength of resin composite to dentin. Acta Odontol Scand 2008 Apr;66(2):73-81.
  16. The effect of two luting agents, pretreatment of the post, and pretreatment of the canal dentin on the retention of fiber-reinforced composite posts. J Dent 2008 Jan;36(1):87-92.
  17. Survival time of cast post and cores: a 10-year retrospective study. J Dent 2007 Jan;35(1):50-58.
  18. The influence of surface roughness on the retentive ability of two dental luting cements. J Oral Rehabil 1978 Oct;5(4):377-389.
  19. Influence of cement thickness on the bond strength of toothcolored posts to root dentin after thermal cycling. Acta Odontol Scand 2013 Jan;71(1):175-182.
  20. Characterization and surface treatment effects on topography of a glass-infiltrated alumina/zirconiareinforced ceramic. Dent Mater 2007 Jun;23(6):769-775.
  21. Long-term survival of endodontically treated, maxillary anterior teeth restored with either tapered or parallel-sided glass-fiber posts and full-ceramic crown coverage. J Dent 2009 Feb;37(2):115-121.
  22. Risk factors for failure of glass fiber-reinforced composite post restorations: a prospective observational clinical study. Eur J Oral Sci 2005 Dec;113(6):519-524.
  23. Effect of luting agents and reconstruction techniques on the fracture resistance of prefabricated post systems. J Oral Rehabil 2005 Jun;32(6):433-440.
  24. Retention and shear bond strength of two post systems. Oper Dent 1999 Jul-Aug;24(4):210-216.
  25. Resistance to fracture of endodontically treated teeth restored with different post systems. J Prosthet Dent 2002 Apr;87(4):431-437.
  26. Clinical evaluation of fiber-reinforced epoxy resin posts and cast post and cores. Am J Dent 2000;13(Spec No):15B-8B.
  27. Coronoradicular reconstruction of pulpless teeth: a mechanical study using finite element analysis. J Prosthet Dent 2002 Oct;88(4):442-448.
  28. Post-retained crown failure: a survey. Dent Update 1982 May;9(4):221,224-6, 228-9 passim.
  29. Effect of post adaptation on fracture resistance of endodontically treated teeth. J Prosthet Dent 1990 Oct;64(4):419-424.
  30. Effect of remaining dentine structure and thermal-mechanical aging on the fracture resistance of bovine roots with different post and core systems. Int Endod J 2008 Nov;41(11):969-976.
PDF Share
PDF Share

© Jaypee Brothers Medical Publishers (P) LTD.