Abstract :

Background: Various resin-based core builds up materials are commercially available in market but their clinical use should follow recommendations of bond strength measurement studies.

Objective: to evaluate the retention between two commercially available core build up materials and silanized and non-silanized glass fibre posts.

Methodology: The retention between two commercially available core build up materials (Core X Flow and Light Core) and Silanized and Non- Silanized glass fiber posts with ten samples in each group were assessed using ‘pull out test’ in universal testing machine. Student’s unpaired ‘t’ test was used for inter group comparison by fixing significance level at p ≤ 0.05.

Results: The retention force was higher in silanized fibre post group compared to non-silanized posts (p=0.02). Among the silanized posts, the retention force was significantly higher in CORE X FLOW group compared to LIGHT CORE group (p=0.03). Conclusion: The retention of posts improved with silanization. With silanization, the retention force was significantly higher with ‘CORE X FLOW’ compared to ‘LIGHT CORE’ core build up material.

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Keywords :

Core Build Up, Dental, Fibre Posts, Root Canal, Silanized.

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References :

1. Trabert KC, Cooney JP. The endodonticlly treated tooth – Restorative concepts and techniques. Dent Clin North Am. 1984; 28: 923-42.
2. Swartz DB, Skidmore AE, Griffin JA Jr. Twenty years of endodontic success and failure. J Endod. 1983 May;9(5):198-202.
3. Hunter M, Flood A. The restoration of endodontically treated teeth. Part 1: Treatment Planning and Restorative Principles. Aus Dent J .1998; 33: 481-90
4. Coloman HL. Restoration of endodontically treated teeth. Dent Clin North Am .1979; 23:647- 661
5. Sadek FT, Monticelli F, Goracci C, Tay FR, Cardoso PE, Ferrari M. Bond strength performance of different resin composites used as core materials around fiber posts. Dent Mater. 2007 Jan;23(1):95-9.
6. Cohen BI, Pagnillo MK, Newman I, Muikant BL, Deutsch AS. Cyclic fatigue testing of five endodontic post designs supported by four core materials. J Prosthet Dent. 1997;78:458-64
7. Zahra K, Reza T. Effect of ascorbic acid, ethanol and acetone on adhesion between the treated fiber posts and composite resin cores. J Adv Prosthodont .2012;4:187-91.
8. Perdigão J, Gomes G, Lee IK. The effect of silane on the bond strengths of fiber posts. Dent Mater. 2006 Aug;22(8):752-8.
9. Goracci C, Rafaelli O, Monticelli F, Balleri B, Bertelli E, Ferrari M. The adhesion between prefabricated FRC posts and composite resin cores: Microtensile bond strength with and without post-silanization .Dent Mater .2005; 21(5):437-44.
10. Millstein PL, Ho J, Nathanson D. Retention between a serrated steel dowel and different core materials. J Prosthet Dent. 1991 Apr;65(4):480-2
11. Kim HD, Lee JH, Ahn KM, Kim HS, Cha HS. Effect of silane activation on shear bond strength of fiber-reinforced composite post to resin cement. J Adv Prosthodont. 2013. May;5(2):104-9.
12. Moraes AP, Sarkis-Onofre R, Moraes RR, Cenci MS, Soares CJ, Pereira-Cenci T. Can Silanization Increase the Retention of Glass-fiber posts? A Systematic Review and Meta-analysis of In Vitro Studies. Oper Dent. 2015 Nov-Dec;40(6):567-80.
13. Belwalkar VR, Gade J, Mankar NP. Comparison of the effect of shear bond strength with silane and other three chemical presurface treatments of a glass fiber-reinforced post on adhesion with a resin-based luting agent: An in vitro study. Contemp Clin Dent. 2016 .Apr-Jun;7(2):193-7.
14. Spinhayer L, Bui ATB, Leprince JG, Hardy CMF. Core build-up resin composites: an in-vitro comparative study. Biomater Investig Dent. 2020 Nov 3;7(1):159-166.
15. Kim YH, Lee JH. Influence of modification in core building procedure on fracture strength and failure patterns of premolars restored with fiber post and composite core. J Adv Prosthodont. 2012 Feb;4(1):37-42.
16. Koçak MM, Cengiz S, Koçak S. Bond Strength of Resin Composites used as Core Materials around Different Types of Fiber Posts. Int J Experiment Dent Sci .2012; 1(2):81-83.
17. Webber MB, Michida SM, Marson FC, de Oliveira GC, Silva Cde O. Analysis of bond strength by pull out test on fibre glass posts cemented in different lengths. J Int Oral Health. 2015 Apr;7(4):7-12.
18. Sadek FT, Monticelli F, Goracci C, Tay FR, Cardoso PE, Ferrari M. Bond strength performance of different resin composites used as core materials around fiber posts. Dent Mater. 2007 Jan;23(1):95-9