Betül ÖZÇOPUR, Andaç Barkın BAVBEK, KEZBAN ÇELİK, Meltem ÖZER, Gürcan ESKİTAŞCIOĞLU

Fiber ile güçlendirilmiş kompozit (FRC) post yüzeyine rezin

Amaç: Bu in vitro çalışmanın amacı rezin siman uygulanmış FRC post ile kor materyali arasındaki push out bağlanma dayanımını incelemektir. Gereç ve Yöntemler: 80 FRC post (Snowpost, USA) dört gruba ayrıldı. İlk üç grupta (n= 20) örneklerin yüzeyine farklı simanlar uygulandı ( Panavia F- Kuraray, Super Bond C&B- Kuraray, Clearfil SAKuraray), son grup kontrol grubu olarak kullanıldı. Post yüzeylerine dual-cure adheziv uyguladıktan sonra (Clearfil SE- Kuraray) örnekler 6 mm çapında kor materyali ile restore edildi (Clearfil Core Build Up, Kuraray). Örnekler 1 mm kalınlığında kesildi ve post-kor bağlantısı universal test makinası ile 1 mm/dak hızda test edildi. Postların yer değiştirmesi için gerekli kuvvetler kayıt edildi. Veriler ANOVA ve Duncan çoklu karşılaştırma testleri ile analiz edildi (=0.05). Bulgular: Rezin siman uygulamasının post-kor restorasyonun push out bağlanma dayanımında etkisi önemlidir (p

Influence of resin cement applicated on fiber reinforced composite (FRC) post surface on the retantion of post-core restoration

Background: The aim of this in vitro study was to evaluate the push-out bond strength of resin cement applicated FRC post to core material. Methods: 80 FRC post (Snowpost, USA) were divided into four groups. First three groups (n=20), specimen surfaces were applicated with different resin cements (Panavia F-Kuraray, Super Bond C&B- Kuraray, Clearfil SA- Kuraray), whereas the last group used as a control group. After apply a dual cure adhesive (Clearfil SE-Kuraray) onto coronal post surfaces, the specimens were restored with core material in 6 mm diameter (Clearfil Core Build Up, Kuraray). The specimens were cut into 1 mm-thick slabs and retantive ability of post-cores were tested with push-out test by universal testing machine at a crosshead speed of 1mm/min. The forces required for dislodgement of the post were recorded. Data were analyzed using ANOVA and the Duncan multiple comparison tests (=0.05). Results: Resin cement application had a significant influence on push-out bond strength of post-core restoration (p<0.05). Panavia F (4,77±1,58 MPa) and Clearfil SA (7,18±3,14 MPa) were found significantly different from eachother (P<0.05), whereas SuperBond C&B (5,72±2,98 MPa) demonstrated similar results with Panavia F (4,77±1,58 MPa) and Clearfil SA (7,18±3,14 MPa) (P>0.05). All the groups showed higher results than the control group (3,57±1,88) (p<0.05). Conclusions: In this study, it was observed that resin cement application can increase the push-out strengths of FRC posts tested. The higher bond strengths in cement applicated groups showed that cement application on post surface may positively influence the post-to-core strengths.

PDF

___

1. Ishida H. Structural gradient in the silane coupling agent layers and its influence on the mechanical and physical properties of composites. In: Ishida H, Kumar G, editors. Molecular characterization of composite interfaces. New York: Plenum Press, p. 25-50, 1985.
2. Ferrari M, Cagidiaco MC, Grandini S, De Sanctis M, Goracci C. Post placement affects survival of endodontically treated premolars. J Dent Res 2007;86(8):729–34.
3. Bitter K, Kielbassa AM. Post-endodontic restorations with adhesively luted fiber-reinforced composite post systems: a review. Am J Dent 2007;20(6):353–60.
4. Ferrari M, CagidiacoMC, Goracci C. Vichi A, Mason PN, Randovi I, Tay F. Long-term retrospective study of the clinical performance of fiber posts. Am J Dent 2007;20(5):287–91.
5. Saunders WP, Saunders EM. Coronal leakage as a cause of failure in root canal therapy: a review. Endod Dent Traumatol 1994;10:105–108.
6. Stockton LW. Factors affecting retention of post systems: a literature review. J Prosthet Dent 1999;81(4):380-5.
7. Ferrari M, Vichi A, Garcia-Godoy F. Clinical evaluation of fiber-reinforced epoxy resin posts and cast post and cores. Am J Dent 2000;13(Spec No):15B-18B.
8. Radovic I, Monticelli F, Goracci C, Cury AH, Coniglio I, Vulicevic ZR,Garcia- Godoy F, Ferrai M. The effect of sandblasting on adhesion of a dual-cured resin composite to methacrylic fiber posts: microtensile bond strength and SEM evaluation. J Dent 2007;35:496-502.
9. King PA, Setchell DJ. An in vitro evaluation of a prototype CFRC prefabricated post developed for the restoration of pulpless teeth. J Oral Rehabil 1990;17(6): 599–609.
10. Isidor F, Odman P, Brondum K. Intermittent loading of teeth restored using prefabricated carbon fibre posts. Int J Prosthodont 1996;9(2):131–6.
11. Asmussen E, Peutzfeldt A, Heitmann T. Stiffness, elastic limit, and strength of newer types of endodontics posts. J Dent 1999;27:275–8.
12. Cheleux N, Sharrock P, Degrange M. Surface treatments on quartz fiber post: influence on adhesion and flexural properties. Am J Dent 2007;20:375-9.
13. Ferrari M, Vichi A, Mannocci F, Mason PN. Retrospective study of the clinical performance of fiber posts. Am J Dent 2000;13(Spec No):9B-13B.
14. Aksornmuang J, Foxton RM, Nakajima M, Tagami J. Microtensile bond strength of a dual cure resin core material to glass and quartz fiber posts. J Dent 2004;32:433-450.
15. Monticelli F, Goracci C, Ferrari M. Micromorphology of the fiber post-resin core unit: a scanning electron microscopy evaluation. Dent Mater 2004;20(2):176–83.
16. Goracci C, Raffaelli 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.
17. Sahafi A, Peutzfeldt A, Asmussen E, Gotfredsen K. Bond strength of resin cement to dentin and to surface-treated posts of titanium alloy, glass fiber, and zirconia. J Adhes Dent 2003;5(2):153-62.
18. Schwartz RS, Robbins JW. Post placement and restoration of endodontically treated teeth: a literature review J Endod 2004;30(5):289-301.
19. Yenisey M, Kulunk Ş. Effects of chemical surface treatments of quartz and glass fiber posts on the retention of a composite J Prostothetic Dent 2008;99(1):38-45.
20. Sorensen JA, Engelman MJ. Ferrule design and fracture resistance of endodontically treated teeth. J Prosthet Dent 1990;63(5):529–36.
21. Cagidiaco MC, Goracci C, Garcia-Godoy F, Ferrari M. Clinical studies of fiber posts: a literature review. Int J Prosthodont 2008;21(4):328–36.
22. Duc O, Krejci I. Effects of adhesive composite core systems on adaptation of adhesive post and cores under load. J Dent 2009;37(8):622-626.
23. Lassila LV, Tanner J, Le Bell AM, Narva K, Vallittu PK. Flexural properties of fiber reinforced root canal posts. Dent Mater 2004;20:29-36.
24. Nishiyama N, Tay FR, Fujita K, Pashley DH, Ikemura K, Hiraishi N, King NM Hydrolysis of functional monomers in a single bottle self etching primer correlation of 13C NMR and TEM findings. J Dent Res 2006;85(5):422-6.
25. Plueddemann EP. Silane coupling agents. New York: Plenum Press; 1991.
26. Goracci C, Tavares AU, Fabianelli A, Monticelli F, Raffaelli O, Cordoso PC, Tay F,Ferrari M. The adhesion between fiber posts and root canal walls: comparison between microtensile and push-out bond strength measurements. Eur J Oral Sci 2004;112(4):353-61.
27. Sahafi A, Peutzfeldt A, Asmussen E, Gotfredsen K. Bond strength of resin cement to surface-treated posts of titanium alloy, glass fiber, and zirconia, and to dentin. J Adhes Dent 2003;5(2) :153–62.
28. Valandro LF, Yoshiga S, De Melo RM, Galhano GA, Mallmann Ai Marinho CP, Bottino MA.. Microtensile bond strength between a quartz fiber post and a resin cement : effect of post surface conditioning. J Adhes Dent 2006;8(2):105-11.
29. Vano M, Goracci C, Monticelli F, Tognini F, Gabriele M, Tay FR, Ferrari M.. The adhesion between fibre posts and composit resin cores: the evaluation of microtensile bond strength following various surface chemical treatments to posts. Int Endod J 2006;39(1):31-9.
30. Giachetti L, Scaminaci Russo D, Bertini F, Giuliani V. Translucent fiber post cementation using a light-curing adhesive/ composite system: SEM analysis and pull-out test. J Dent 2004;32(8):629–634.
31. Yoldas O, Alacam T. Microhardness of composites in simulated root canals cured with light transmitting posts and glass–fiber reinforced composite posts. J Endod 2005;31(2):104–6. SÜ Dişhek Fak Derg, 2012 Özçopur, Bavbek, Çelik, Özer, Eskitaşçıoğlu 6
32. Ferrari M, Vichi A, Grandini S. Efficacy of different adhesive techniques on bonding to root canal walls: an SEM investigation. Dent Mater 2001;17(5):422-9.
32. Roberts HW, Leonard DL, Vandewalle KS, Cohen ME, Charlton DG. The effect of a translucent post on resin composite depth of cure. Dent Mater 2004;20(7):617-22.
33. Kececi AD, Ureyen Kaya U, Adanir N. Micro push-out bond strengths of four fiber-reinforced composite post systems and 2 luting materials Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2008;105 (1):121-8.
34. Stober T, Rammelsberg P. The failure rate of adhesively retained composite core build-ups in comparison with metaladded glass ionomer core build-ups. J Dent 2005;33(1):27-
35. 35. Labella R, Lambrechts P, Van Meerbeek B, Vanherle G. Polymerization shrinkage and elasticity of flowable composites and filled adhesives. Dent Mater 1999;15(2):128–37.