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Yeni nesil self-etchıng adeziv sistemlerin rezin kompozit restorasyonlarında mikrosızıntılarının karşılaştırılması

Authors: Dallı, Mehmet;

Yeni nesil self-etchıng adeziv sistemlerin rezin kompozit restorasyonlarında mikrosızıntılarının karşılaştırılması

Abstract

Amaç: Bu çalışmanın amacı, yeni nesil beş self-etching adeziv sistemin sınıf V restorasyonlarda mikrosızıntı miktarlarını in vitro koşullarda karşılaştırmalı olarak değerlendirmektir.Gereç ve Yöntem: Bu çalışmada ortodontik veya periodontal sebeplerle çekilmiş 100 adet çürüksüz insan molar dişi kullanıldı. Çekim sonrasında dişler üzerindeki yumuşak dokular ve artıklar bir kretuar uzaklaştırıldı, pomza ve fırça yardımıyla parlatıldı. Çalışmada kullanılacakları güne kadar dişler distile suda, oda sıcaklığında bekletildi. Dişlerin bukkal yüzeylerinde, mine sement birleşiminin (servikal) 1 mm altında sonlanacak şekilde silindirik elmas frezler (Diatech, Swiss Dental Instruments, Heerbrugg, Switzerland) yardımıyla mezio-distal genişliği 3 mm, okluzo-gingival genişliği 2 mm ve derinliği 1.5 mm olan standardize sınıf V kaviteler hazırlandı ve mine kenarları 0.5-1 mm genişliğinde olacak şekilde elmas rond frezlerle (Diatech, Swiss Dental Instruments, Heerbrugg, Switzerland) bizote edildi. Dişler her grupta 20'şer adet olacak şekilde rastgele beş gruba ayrıldı. 1.grup: Clearfil S3 Bond (Kuraray Medical Inc., Japonya), 2.grup: Xeno V (Dentsply DeTrey, Konstanz, Almanya), 3.grup: G Bond (GC, America), 4.grup: Optibond All In One (Kerr Corporation, Orange, CA), 5.grup: iBond (Heraeus Kulzer, Almanya) uygulandıktan sonra hazırlanan kavitelere üretici firmaların tavsiyeleri doğrultusunda kompozit rezinler yerleştirildi ve LED (Light Emitting Diode-Elipar Freelight, 3M ESPE, Germany) cihazı ile polimerize edildi. Bitirme ve cila işlemlerinden sonra dişler önce 24 s 37 oC de etüvde (Nüve Incubator EN 120, Ankara, Türkiye) distile su içerisinde bekletildi. 24 saat sonra restorasyonların parlatılma işlemi su altında elmas bitirme frezleri (Diatech Dental AG, Heerbrugg, Switzerland) ile yapıldı ve alüminyum oksit kaplı diskler (Sof-Lex, 3M ESPE, St. Paul, MN, USA) yardımıyla tamamlandı. Ardından dişler 5 ± 2 ºC ve 55 ± 2 ºC de termal siklus cihazında (NOVA, Konya, Türkiye) 10.000 kez termal siklus işlemine tabi tutuldu. Daha sonra dolguların 1mm çevresi hariç dişler tamamen 2 kat aside dirençli tırnak cilası ile kaplandı ve ardından 24 s 37 oC de (Nüve Incubator EN 120, Ankara, Türkiye) % 0.5'lik metilen mavisinde bekletildi. Bu süre sonunda boyadan çıkartılan örneklerden isomet 1000 cihazında (Isomet 1000 Precision Saw, BUEHLER, USA) alınan kesitler stereomikroskop (Olympus SZ 40, SZ-PT, Japan) altında x15 büyütmede incelenerek fotoğrafları alındı. Gingival ve okluzal mikrosızıntı dereceleri standart bir skala ile 0-4 arasında skorlandı. Ayrıca, her gruptan rastgele birer örnek seçildi ve rezin-diş sert dokusu ara yüzeyi SEM ( JSM-5600 JEOL SEM, Jeol Co., Tokyo, Japan) altında farklı büyütmelerde incelenip fotoğraflandı. Elde edilen sonuçlar istatistiksel olarak Kruskal-Wallis ve Mann Whitney U testleri ile değerlendirildi.Bulgular: Gruplar arasındaki okluzal ve gingival mikrosızıntı farkları istatistiksel olarak anlamlı bulundu (p<0.05)(p=0.043, p=0.005). Clearfil S3 Bond ve Optibond All In One gruplarında okluzal mikrosızıntı değerlerinin diğer üç gruptan oldukça düşük olduğu gözlendi. iBond grubunda mikrosızıntı değerlerinin en yüksek olduğu tespit edilirken Xeno V ve G Bond grupları arasında istatistiksel olarak bir farklılık olmadığı gözlenmiştir (p>0.05). iBond grubunda gingival kenarda mikrosızıntı değerlerinin en yüksek olduğu tespit edilirken diğer gruplar arasında istatistiksel olarak bir farklılık olmadığı tespit edilmiştir (p>0.05).Sonuç: Çalışmamızda termal siklus ile ağız ortamı taklit edilmeye çalışıldı. Hazırlanan sınıf V kavitelerde self-etching adezivlerin okluzal ve gingival mikrosızıntı skorlarının bir grup haricinde başarılı olduğu saptanmıştır.

Aim: The aim of this study was to assess in vitro microleakage amounts of five different new generation self-etching adhesive systems comparatively in composite resin restorations.Materials and Method: In this study 100 caries-free human permanent molar teeth extracted because of orthodontic or periodontal reasons were used. After extraction, soft tissues on teeth were cleaned with a scaler and polished with brush and pumice. Until the date of use teeth were stored in distilled water at room temperature. Teeth were randomly assigned to five groups (n=20) and standardized class V cavities with 3 mm mesio-distal diameter, 2 mm occluso-gingival diameter and 1.5 mm depth were prepared 1mm below the enamel-cement junction (servical) line of facial surfaces, and enamel margins of the cavities were bevelled in a 0.5-1 mm area with diamond round burs (Diatech, Swiss Dental Instruments, Heerbrugg, Switzerland). Then Clearfil S3 Bond (Kuraray Medical Inc. Japan) in Group I, Xeno V (Dentsply DeTrey, Konstanz, Germany) in Group II, G Bond (GC America) in Group III, Optibond All In One (Kerr Corporation, Orange, CA) in Group IV and iBond (Heraeus Kulzer, Germany) in Group V were applied to prepared cavities, composite resin were placed, and were polymerized by LED device (Light Emitting Diode-Elipar Freelight, 3M ESPE, Germany) according to manufacturers? recommandations. Before finishing and polishing, teeth were immersed into distilled water at 37 oC (Nüve Incubator EN 120, Ankara, Türkiye) for 24 h. After 24 h polishing and finishing of restorations were done with diamond finishing burs (Diatech Dental AG, Heerbrugg, Switzerland) under water and were completed with aluminium oxide coated disks (Sof-Lex, 3M ESPE, St. Paul, MN, USA). Then were subjected to thermocycling 10.000 times with a dwell time of 30 s at 5 ± 2 ºC and 55 ± 2 ºC. Following this, all teeth, except 1mm surrounding of the restorations, were coated twice with acid resistant varnish and stained in 0.5 % methylene blue at 37 oC (Nüve Incubator EN 120, Ankara, Türkiye) for 24 h. Then teeth were sectioned bucco-palatinally/lingually by the help of Isomet 1000 device (Isomet 1000 Precision Saw, BUEHLER, USA) and microleakage of occlusal and gingival walls were scored on a standart 0-4 ordinal scale under stereomicroscope (Olympus SZ 40, SZ-PT, Japan) at 15X magnification. And also SEM (Scanning Electron Microscopy) ( JSM-5600 JEOL SEM, Jeol Co., Tokyo, Japan) photographs of resin-tooth hard tissue interfaces were taken at different magnifications after microleakage assessment. Results of microleakage test were statistically analyzed by Cruskall-Wallis and Mann Whitney U tests.Results: Statistically differences of gingival and occlusal microleakage scores among groups were significant (p<0.05)(p=0.043, p=0.005). Occlusal microleakage scores of Clearfil S3 Bond and Optibond All in One were observed considerably lower than other 3 groups. While microleakage of iBond was determined as the highest, statistically no difference was observed between Xeno V and G Bond groups (p>0.05). As gingival microleakage scores of iBond were the highest; statistically there was no difference among other groups (p>0.05).Conclusion: In our study oral conditions were tried to be simulated by thermocycling. In prepared class V cavities occlusal and gingival microleakage scores of self-etching adhesives were observed successful except one group.

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Turkey
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Keywords

Kompozit rezin, Self-etching, Mikrosızıntı, Diş Hekimliği, Methylene blue, Dentistry, Metilen mavisi, Dental leakage, Servikal lezyon, Adeziv, Composites, Dental bonding

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