Ümit Güneş ÖZCAN, Bekir Oğuz AKTENER, Nil YALÇINKAYA

Kanal Tedavili Dişlere Farklı Yüzey Koşulları İle Uygulanmış Postların Bağlanma Dayanımının Etkisinin Karşılaştırılması

AMAÇ: Kök dentini ve fiber postlara uygulanan farklı yüzey işlemleri sonrası, push-out testi ile bağlanma dayanımının değerlendirilmesi. YÖNTEM: Çalışmada çekilmiş altmışdört adet tek kanallı alt çene küçük azı dişleri kullanıldı. Örnekler kök yüzeyine EDTA kullanımlarına göre iki ana gruba ayrıldı. Her iki ana grup kendi içinde fiber post yüzeylerine uygulanan işlemlere göre (%9,6'lık hidroflorik asit, silanizasyon) dörder alt gruba ayrıldı. Ardından tüm örneklerin apikal, orta ve servikal bölgelerinden 1,5 mm kalınlığında kesitler alınarak itme testi ile bağlanma dayanımları ölçüldü. BULGULAR: En yüksek bağlanma direnci örneklerin koronal üçlüsünde, en düşük bağlanma direnci ise apikal üçlüde görüldü. EDTA kullanımının etkisi değerlendirildiğinde, smear tabakası kaldırılan grup istatiksel olarak anlamlı derecede daha yüksek bağlanma direnci gösterdi. En yüksek bağlanma direnci tüm yüzeylere işlem uygulanan grupta görüldü (p

Comparison of Bonding Strengths of Endodontically Treated Teeth with Fiber Posts with Different Surface Conditions

OBJECTIVE: To evaluate the bond strength of fiber posts with different surface treatments using a pushout test. METHODS: Sixty-four extracted single-rooted mandibular premolars were used in the present study. Access cavities were prepared and root canals were shaped using NiTi rotary files. Samples were divided in two main groups according to EDTA application to root surfaces. Each main group was divided into 4 subgroups according to the fiber post surface treatments (9.6 % hydrofluoric acid and silane). RESULTS: The highest resistance was determined in the coronal part of the roots, and the lowest resistance was found in apical part of the roots. EDTA application increased the bond strength significantly. The highest bond strength was found in the group treated with EDTA, HF and silane (p<0.05). The lowest bond strength was found in the control group (p<0.05). CONCLUSION: EDTA, hydrofluoric acid and silane applications significantly enhanced the bond strength of fiber posts to root dentin.

PDF

___

1. Keyf F, Şahin E. Retentive properties of three postcore systems. Aust Dent J 1994;39:20-24.
2. Strassler HE, Cloutier PC. A new fiber post for esthetic dentistry. Compend Contin Educ Dent 2003;24:742-744.
3. Lewis R, Smith BG. A Clinical survey of failed post retained crowns. Br Dent J 1988;165:95-97.
4. Stockton LW. Factors affecting retention of post systems: A literature review. J Prosthet Dent 1999;81:380-385.
5. Ruemping DR, Lund MR, Schnell RJ. Retention of dowels subjected to tensile and torsional forces. J Prosthet Dent 1979;41:159-62.
6. Sahafi A, Peutzfeldt A, Asmussen E, Gotfredsen K. Effect of surface treatment of prefabticated posts on bonding of resin cement. Oper Dent 2004;1:60-68.
7. Chan FV, Harcourt JK, Brockhurst PJ. The effect of post adaptation in the root canal on retention of posts cemented with various cements. Aust Dent J 1993;38:39-45.
8. Huang TJ, Schilder H, Nathanson D. Effect of moisture content and endodontic treatment on some mechanical properties of human dentin. J Endod 1992;18:209-215.
9. Sedgley CM, Messer HH. Are endodontically treated teeth more brittle? J Endod 1992;18:332-335.
10. Fogel HM. Microleakage of posts used to restore endodontically treated teeth. J Endod 1995;21:376- 379.
11. Le Bell AM, Lassila LVJ, Kangasniemi I, Vallittu PK. Bonding of fibrereinforced composite post to root canal dentin. J Dent 2005;33:533-39.
12. Grandini S, Goracci C, Francesca M, Borracchini A, Ferrari M. SEM evaluation of the cement layer thickness after luting two different posts. J Adhes Dent 2005;7:235-240.
13. Tjan AH, Whang SB. Retentive properties of some simplified dowel-core systems to cast gold dowel and core. J Prosthet Dent 1983:50:203-206.
14. Swartz ML, Phillips RW and Clars HE. Long term F release from glass-ionomer cements. J Dent Res 1984;63:158-160.
15. Meyenberg KH, Luthy H and Scharer P Zirconia posts: A new all ceramic concept for nonvital abutment teeth. J Est Dent 1995;7:73-80.
16. Isidor F, Odman P, Brondum K. Intermittent loading of teeth restored using prefabricated carbon fiber posts. Int J Prosthodont 1996;9:131- 136.
17. Kakehashi Y, Lüthy H, Naef R, Wohlwend A, Scharer P. A new allceramic post and core system: clinical, technical, and in vitro results. Int J Periodon Rest 1998;18:587-593.
18. Koutayas SO, Kern M. All-ceramic post and cores: The state of art. Quintessence Int 1999;30:383- 392.
19. Baraban DJ. The restoration of endodontically treated teeth: An update. J Prosthet Dent 1988;59:553-58.
20. Deutsch AS, Musikant BL, Cavallari J, Silverstein L, Lepley JB, Ohlen K et al. Root fracture during insertation of prefabricated posts related to root size. J Prosthet Dent 1985;53:786-789.
21. Bitter K, Gläser C, Neumann K, Blunck U, Frankenberger R. Analysis of resin-dentin interface morphology and bond strength evaluation of core materials for one stage post-endodontic restorations. PLoS One 2014;9
22. 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;5:153-162.
23. Vano M, Goracci C, Monticelli F, Tognini F, Gabriele M, Tay FR, Ferrari M. The adhesion between fibre posts and composite resin cores: the evaluation of microtensile bond strength following various surface chemical treatments to posts. Int Endod J 2006 39:31-9.
24. Xible AA, de Jesus Tavarez RR, de Araujo CRP, Bonachela WC. Effect of silica coating and silanization on flexural and composite-resin bond strengths of zirconia posts: An in vitro study. J Prosthetic Dent 2006;95:224-229.