Effect of Surface Treatment on the Bond Strength of Fiber-Reinforced Composite Posts

Document Type : Original Article


1 Department of Prosthodontics, Dental School, Shiraz University of Medical Sciences, Shiraz, Iran

2 Department of Prosthodontics, Dental School, Kerman University of Medical Sciences, Kerman, Iran

3 Dentist, Private Practice, Kerman, Iran


Background: Bond strength of fiber-reinforced composite (FRC) posts can be influenced by the post surface treatment method. The aim of the present study was to evaluate the effect of surface treatment method on the bond strength of FRC posts.
Methods: 40 extracted mandibular premolars with minimum root length of 14 mm were cut from 1 mm above CEJ and root canal treatment was performed on them. Randomly divided into 2 groups: Group 1 surface treatment with hydrogen peroxide (H2O2) 24%, group 2 surface treatment with hydrofluoric acid (HF) 10% and posts in 2 groups cemented with Luxacore cement. The push-out test was performed on 2 mm sections from cervical, medial and apical areas of roots in universal testing machine with speed of 1 mm/min. Bond strength was calculated in megapascal. The failure mode of the specimens was analyzed under stereomicroscope at ×40 magnification. The data were statistically analyzed with SPSS 21 and the results were evaluated by ANOVA, chi2 tests at the significance level of p<0. 05.
Results: Bond strength was 22. 13 ± 10. 12 and 21. 27 ± 9. 45 megapascal in group HF and H2O2 respectively. There was no significant difference between two surface treatment methods and bond strength. The most mode of fracture was in cementum-dentin.
Conclusion: Based on the result of the present study, surface treatment can affect the bond strength of FRC posts. Further studies are recommended.


  1. Aslan T, Sagsen B, Er Ö, Ustun Y, Cinar F. Evaluation of fracture resistance in root canal-treated teeth restored using different techniques. Niger J Clin Pract. 2018; 21(6):795-800. doi: 10.4103/njcp.njcp_330_17.
  2. Sagsen B, Aslan B. Effect of bonded restorations on the fracture resistance of root filled teeth. Int Endod J. 2006; 39(11):900-4. doi: 10.1111/j.1365-2591.2006.01176.x.
  3. Stavropoulou AF, Koidis PT. A systematic review of single crowns on endodontically treated teeth. J Dent. 2007; 35(10):761-7. doi: 10.1016/j.jdent.2007.07.004.
  4. Schwartz RS, Robbins JW. Post placement and restoration of endodontically treated teeth: a literature review. J Endod. 2004; 30(5):289-301. doi: 10.1097/00004770-200405000-00001.
  5. Figueiredo FE, Martins-Filho PR, Faria-E-Silva AL. Do metal post-retained restorations result in more root fractures than fiber post-retained restorations? A systematic review and meta-analysis. J Endod. 2015; 41(3):309-16. doi: 10.1016/j.joen.2014.10.006.
  6. Rocca GT, Daher R, Saratti CM, Sedlacek R, Suchy T, Feilzer AJ, et al. Restoration of severely damaged endodontically treated premolars: The influence of the endo-core length on marginal integrity and fatigue resistance of lithium disilicate CAD-CAM ceramic endocrowns. J Dent. 2018; 68:41-50. doi: 10.1016/j.jdent.2017.10.011.
  7. Ferrari M, Cagidiaco MC, Goracci C, Vichi A, Mason PN, Radovic I, et al. Long-term retrospective study of the clinical performance of fiber posts. Am J Dent. 2007; 20(5):287-91. PMID: 17993023.
  8. Gomes KGF, Faria NS, Neto WR, Colucci V, Gomes EA. Influence of laser irradiation on the push-out bond strength between a glass fiber post and root dentin. J Prosthet Dent. 2018; 119(1):97-102. doi: 10.1016/j.prosdent.2017.01.013.
  9. Alnaqbi IOM, Elbishari H, Elsubeihi ES. Effect of Fiber Post-Resin Matrix Composition on Bond Strength of Post-Cement Interface. Int J Dent. 2018; 2018:4751627. doi: 10.1155/2018/4751627.
  10. Fokkinga WA, Kreulen CM, Vallittu PK, Creugers NH. A structured analysis of in vitro failure loads and failure modes of fiber, metal, and ceramic post-and-core systems. Int J Prosthodont. 2004; 17(4):476-82. PMID: 15382786.
  11. de Sousa Menezes M, Queiroz EC, Soares PV, Faria-e-Silva AL, Soares CJ, Martins LR. Fiber post etching with hydrogen peroxide: effect of concentration and application time. J Endod. 2011; 37(3):398-402. doi: 10.1016/j.joen.2010.11.037.
  12. Majeti C, Veeramachaneni C, Morisetty PK, Rao SA, Tummala M. A simplified etching technique to improve the adhesion of fiber post. J Adv Prosthodont. 2014; 6(4):295-301. doi: 10.4047/jap.2014.6.4.295.
  13. Perdigão J, Gomes G, Lee IK. The effect of silane on the bond strengths of fiber posts. Dent Mater. 2006; 22(8):752-8. doi: 10.1016/j.dental.2005.11.002.
  14. Mishra L, Khan AS, Velo MMAC, Panda S, Zavattini A, Rizzante FAP, et al. Effects of Surface Treatments of Glass Fiber-Reinforced Post on Bond Strength to Root Dentine: A Systematic Review. Materials (Basel). 2020; 13(8):1967. doi: 10.3390/ma13081967.
  15. Oguz Ahmet BS, Egilmez F, Ergun G, Cekic Nagas I. Surface treatment effects on bond strength of CAD/CAM fabricated posts to root canal dentin. Am J Dent. 2019; 32(3):113-7. PMID: 31295391.
  16. Gomes França FM, Vaneli RC, Conti Cde M, Basting RT, do Amaral FL, Turssi CP. Effect of Chlorhexidine and Ethanol Application on Long-term Push-out Bond Strength of Fiber Posts to Dentin. J Contemp Dent Pract. 2015; 16(7):547-53. doi: 10.5005/jp-journals-10024-1720.
  17. Shiratori FK, Valle AL, Pegoraro TA, Carvalho RM, Pereira JR. Influence of technique and manipulation on self-adhesive resin cements used to cement intraradicular posts. J Prosthet Dent. 2013; 110(1):56-60. doi: 10.1016/S0022-3913(13)60341-8.
  18. Shillingburg H, Sather D, Wilson E. Fundamentals of fixed prosthodontics. 4th ed. Chicago:  Quintessence Pub Co; 2012. Chap 13. p. 200-228.
  19. Pahlevan A, Mirzaei M, Akbarian S. Shear bond strength of zirconia post to root dentin with two different cements and comparison with fiber posts. J Islam Dent Assoc IRAN. 2011; 23(1):17-23. [In Persian].
  20. Erdemir U, Sar-Sancakli H, Yildiz E, Ozel S, Batur B. An in vitro comparison of different adhesive strategies on the micro push-out bond strength of a glass fiber post. Med Oral Patol Oral Cir Bucal. 2011; 16(4):626-34. doi: 10.4317/medoral.16.e626.
  21. Zhang L, Huang L, Xiong Y, Fang M, Chen JH, Ferrari M. Effect of post-space treatment on retention of fiber posts in different root regions using two self-etching systems. Eur J Oral Sci. 2008; 116(3):280-6. doi: 10.1111/j.1600-0722.2008.00536.x.
  22. Ubaldini ALM, Benetti AR, Sato F, Pascotto RC, Medina Neto A, Baesso ML, et al. Challenges in luting fibre posts: Adhesion to the post and to the dentine. Dent Mater. 2018; 34(7):1054-62. doi: 10.1016/j.dental.2018.04.001.
  23. Sipahi C, Piskin B, Akin GE, Bektas OO, Akin H. Adhesion between glass fiber posts and resin cement: evaluation of bond strength after various pre-treatments. Acta Odontol Scand. 2014; 72(7):509-15. doi: 10.3109/00016357.2013.875586.
  24. Aksornmuang J, Chuenarrom C, Chittithaworn N. Effects of various etching protocols on the flexural properties and surface topography of fiber-reinforced composite dental posts. Dent Mater J. 2017; 36(5):614-21. doi: 10.4012/
  25. Valdivia AD, Novais VR, Menezes Mde S, Roscoe MG, Estrela C, Soares CJ. Effect of surface treatment of fiberglass posts on bond strength to root dentin. Braz Dent J. 2014; 25(4):314-20. doi: 10.1590/0103-6440201300143.
  26. Samimi P, Mortazavi V, Salamat F. Effects of heat treating silane and different etching techniques on glass fiber post push-out bond strength. Oper Dent. 2014; 39(5):E217-24. doi: 10.2341/11-486-L.
  27. Schmage P, Cakir FY, Nergiz I, Pfeiffer P. Effect of surface conditioning on the retentive bond strengths of fiberreinforced composite posts. J Prosthet Dent. 2009; 102(6):368-77. doi: 10.1016/S0022-3913(09)60196-7.
  28. Kırmalı O, Ustün O, Kapdan A, Kuştarcı A. Evaluation of Various Pretreatments to Fiber Post on the Push-out Bond Strength of Root Canal Dentin. J Endod. 2017 Jul;43(7):1180-1185. doi: 10.1016/j.joen.2017.03.006.
  29. Gençoglu N, Sezgin P, Gündoğar M, Şivet C. The effect of surface treatments on the bond strength of fiber post to root canal dentin. Marmara Dent J. 2013; 1(1):35-8. doi: 12990/MDJ2013127.
  30. Garcia PP, da Costa RG, Garcia AV, Gonzaga CC, da Cunha LF, Rezende CE, et al. Effect of surface treatments on the bond strength of CAD/CAM fiberglass posts. J Clin Exp Dent. 2018; 10(6):591-7. doi: 10.4317/jced.54904.
  31. Fonseca TS, Alfredo E, Vansan LP, Silva RG, Sousa YT, Saquy PC, et al. Retention of radicular posts varying the application technique of the adhesive system and luting agent. Braz Oral Res. 2006; 20(4):347-52. doi: 10.1590/s1806-83242006000400012.
  32. Parčina Amižić I, Baraba A, Ionescu AC, Brambilla E, Van Ende A, Miletić I. Bond strength of individually formed and prefabricated fiber-reinforced composite posts. J Adhes Dent. 2019; 21(6):557-65. doi: 10.3290/j.jad.a43649.
  33. Amini P, Torabi-Parizi M, Taheri A, Taheri S. The effect of resin cement type and cementation technique on bond strength of fiber posts. Journal of Kerman University of Medical Sciences. 2018; 25(3):206-12.