COMPARİSON OF MİCROLEAKAGE LEVELS OF CLASS-V HYBRİD COMPOSİTE RESİN RESTORATİONS

Yıl 2012, Cilt: 1 Sayı: 3, 110 - 116, 31.12.2012

Hakkı Cenker Küçükeşmen Çiğdem Küçükeşmen

Öz

The aim of study was to compare the microleakage levels of two hybrid composites applied with a total-etch bonding system in Class-V restorations on permanent molars.

15 non-carious, permanent molars were used in study. Teeth were cleaned and polished with brush, rubber cup and nonfluoride pumice. They were stored in distilled water containing 0.1% thymol for disinfecting for 24hours. 30 box-shaped Class-V cavities (4x2x2mm) were prepared on the middle buccal and lingual surfaces of the teeth. After the etching of cavities with phosphoric acid gel a total-etch bonding agent was applied to the cavities and polymerized for 20s with halogen light unit.

A hybrid composite resin was placed in buccal cavities and another hybrid composite resin was applied to the lingual cavities. All samples were polymerized for 40s with halogen light unit. After finishing-polishing procedures, teeth were stored in distilled water at 370C for 24h, thermocycled (+5/+550C/x500) and immersed in 0.5% basic fuchsin at 370C for 24h. Teeth were separated buccolingually and evaluated for dye-penetration using a stereomicroscope (10x2.5magnification). Data were determined with Kruskal-Wallis and Wilcoxon-Signed Range Tests (p<0.05).

There was not statistical difference between two hybrid composite resin groups (p>0.05). Microleakage was found higher at cervical margins than occlusal margins statistically (p<0.05).

Use of both hybrid composites with total-etch bonding system was found appropriate for Class-V restorations in permanent molars. However, the risk of leakage was found higher at cervical margins than occlusal’s.

Anahtar Kelimeler

Total-etch bonding agents, Hybrid resin composites

SINIF-V HİBRİD KOMPOZİT REZİN RESTORASYONLARIN MİKROSIZINTI DÜZEYLERİNİN KARŞILAŞTIRILMASI

Öz

Bu çalışmanın amacı, daimi azı dişlerin Sınıf-V restorasyonlarında, bir total-etch bağlayıcı sistemle birlikte uygulanan iki hibrid kompozit rezin materyalin mikrosızıntı düzeylerinin karşılaştırılmasıdır.

Çalışmada, 15 adet çürüksüz daimi azı dişi kullanıldı. Çekilen dişler fırça, lastik ve flor içermeyen bir pat yardımıyla temizlendi ve %0.1 timol içeren distile suda 24saat bekletilerek dezenfekte edildi. Dişlerin bukkal ve lingual yüzeylerinin orta üçlüsüne, 4x2x2 ebatlarında 30 adet, kutu şeklinde Sınıf-V kavite açıldı. Kavitelere % 35’lik fosforik asit jel (ve ardından total-etch bağlayıcı ajan uygulandı ve halojen ışık kaynağıyla 20sn süreyle polimerize edildi. Bir hibrid kompozit rezin materyal bukkal kavitelere ve diğer hibrid kompozit rezin materyal lingual kavitelere yerleştirildi. Tüm kompozit rezin örnekler halojen ışık kaynağıyla 40sn süreyle polimerize edildi. Bitirme ve polisaj işlemleri yapılan dişler distile suda, 370C’de 24saat bekletildi ve +5/+550C’de 500 kez termosiklus uygulandı. Ardından %0.5’lik bazik fuksin’de 370C’de 24saat bekletilen dişler bukkolingual olarak kesildi ve mikrosızıntı düzeyleri 10x2.5 büyütmeyle stereomikroskopta incelendi. Bulgular, Kruskal-Wallis ve Wilcoxon-Signed Range Testleriyle istatistiksel olarak değerlendirildi (p<0.05).

Çalışmanın bulguları değerlendirildiğinde, İki hibrid kompozit rezin grubun mikrosızıntı düzeyleri arasında istatistiksel yönden farklılık bulunmadı (p>0.05). Servikal kenarlarda, okluzal kenarlara oranla istatistiksel olarak daha fazla mikrosızıntı olduğu gözlendi (p<0.05).

Bu çalışmada daimi azı dişlerin Sınıf-V restorasyonlarında, total-etch bağlayıcı sistemle birlikte her iki hibrid kompozit rezin materyalin kullanımının da uygun olduğu, bununla birlikte servikal kenarlarda oklüzala oranla daha yüksek mikrosızıntı riskinin bulunduğu sonucuna varıldı.

Anahtar Kelimeler

Total-etch bağlayıcı ajanlar, Hibrid kompozit rezinler

Kaynakça

• 1. Manhart J, Chen HY, Mehl A, et al. Marginal quality and microleakage of adhesive class V restorations. J Dent. 2001;29:123-30.
• 2. Dayangaç B: Kompozit rezin restorasyonlar, s. 2-25, Güneş Kitabevi, Ankara, (2000).
• 3. Hosoda H, Yamada T, Inokoshi S. SEM and elemental analysis of composite resins. J Prosthet Dent. 1990;64:669-76.
• 4. Jones CT, Chan DC, Pashley D, et al. Microtensile bond strength testing and failure analysis of hybrid and flowable composites. J Adhes Dent. 2006;8:13-20.
• 5. Van Meerbeek B, Vargas M, Inoue S, et al. Adhesives and cements to promote preservation dentistry. Oper Dent. 2001;6(Suppl):119-44.
• 6. Brännström M. Communication between the oral cavity and the dental pulp associated with restorative treatment. Oper Dent. 1984;9:57-68.
• 7. Feilzer AJ, De Gee AJ, Davidson JL. Curing contraction of composites and glass-ionomer cements. J Prosthet Dent. 1988;59:299-300.
• 8. Hembree JH, Andrews JT. In vitro microleakage of several acid-etch composite systems. J Dent Res. 1976;55(Special issue B):Abstract No:309.
• 9. Li H, Burrow MF, Tyas MJ. Nanoleakage patterns of four dentin bonding systems. Dent Mater. 2000;16:48-56.
• 10. Frankerberger R, Kramer N, Petschelt A. Long-term effect of dentin primers on enamel bond strength and marginal adaptation. Oper Dent. 2000;25:11-9.
• 11. Corona SAM, Borsatto MC, Palma Dibb RG, et al. Microleakage of class V resin composite restorations after bur, air-abrasion or Er:YAG laser preparation. Oper Dent. 2001;26:491-7.
• 12. Neme AL, Evans DB, Maxson BB. Evaluation of dental adhesive systems with amalgam and resin composite restorations: comparison of microleakage and bond strength results. Oper Dent. 2000;25:512-9.
• 13. Friedl KH, Schmalz G, Hiller KA, et al. Marginal adaptation of class V restorations with and without “softstart-polymerization”. Oper Dent. 2000;25:26-32.
• 14. Alavi AA, Kianimanesh N. Microleakage of direct and indirect composite restorations with three dentin bonding agents. Oper Dent. 2002;27:19-24.
• 15. Titly KC, Ceherncky R, Rossouw PE, et al. The effect of various storage methods and media on shear bond strengths of dental composite resin to bovine dentin. Arch Oral Biol. 1998;43:305-11.
• 16. Uno S, Finger WJ, Fritz UB. Effect of cavity design on microleakage of resin-modified glass ionomer restorations. Am J Dent. 1997;10:32-5.
• 17. Tay FR, Gwinnett AJ, Pang KM, et al. Variability in microleakage observed in a total-etch wet-bonding technique under different handling conditions. J Dent Res. 1995;74:1168-78.
• 18. Taylor MJ, Lynch E. Microleakage. J Dent. 1992;20:3-10.
• 19. Heping LI, Burrow MF, Tyas MJ. The effect of load cycling on the nanoleakage of dentin bonding systems. Dent Mater. 2002;18:111-9.
• 20. Gordan VV, Vargas MA, Cobb DS, et al. Evaluation of asidic primers in microleakage of class V composite resin restorations. Oper Dent. 1998;23:244-9.
• 21. Leinfelder KF: Ask the expert. What intensity is best in light curing? J Am Dent Assoc. 1999;130:534.
• 22. Küçükeşmen Ç, Sönmez H. Microleakage of Class-V composite restorations with different bonding systems on fluorosed teeth. Eur J Dent. 2008;2:48-58.
• 23. Murray PE, Smyth TW, About I, et al. The effect of etching on bacterial microleakage of an adhesive composite restoration. J Dent. 2002;30:29-36.
• 24. Ferrari M, Davidson CL. In-vivo resin-dentin interdiffusion and tag formation with lateral branches of two adhesive systems. J Prosthet Dent.1996;76:2503.
• 25. Bilgin Z, Sönmez H. Asitleme süresinin iki farklı fissur örtücünün bağlanma kuvveti ve kenar sızıntısına etkisi. Pedodonti Klinik/ Araştırma Dergisi. 1996;3:1-5.
• 26. Rosa BT, Perdigao J. Bond strength of nonrinsing adhesives. Quintessence Int. 2000;31:353-8.
• 27. Kanemura N, Sano H, Tagami J. Tensile bond strength to and SEM evaluation of ground and intact enamel surfaces. J Dent. 1999;27:523-30.
• 28. Küçükeşmen Ç, Sönmez H, Üşümez A, et al. Effects of dental fluorosis on microleakage from Class-V ormocer restorations in permanent molar teeth. Fluoride. 2007;40:134-9.
• 29. Bağış YH, Tarakçıoğlu A, Mojtabaei K. Beş farklı adeziv restoratif sistem kullanılarak yapılan Class V restorasyonlarda mikrosızıntının incelenmesi. AÜ Diş Hek Fak Derg. 2003;30:207-14.
• 30. Ramos P, Chimello DT, Chinelatti MA, et al. Effect of three surface sealants on marginal sealing of Class V composite resin