Evaluation of microleakage scores of flowable bulk-fill and flowable conventional composites according to different adhesive application modes

Year 2024, Volume: 41 Issue: 1, 17 - 24, 03.01.2024

Sevda Öztürk Yeşilırmak , Burcu Oglakci , Zümrüt Ceren Özduman , Evrim Eligüzeloğlu Dalkılıç

https://doi.org/10.17214/gaziaot.1239947

Abstract

Objective: The aim of this in vitro study was to evaluate the effects of different application modes of the universal adhesive system on the microleakage of Class V flowable composite restorations.
Materials and Methods: In this study, sixty sound human premolar teeth were used. Standardized Class V cavities were prepared on the buccal surfaces of teeth, with the cervical margin on the dentin and the occlusal margin on the enamel surface. Specimens were randomly divided into 6 groups according to composite resin type (Filtek Z250/FZ, Metafil Bulk Fill/MB, and Nova Compo HF/NC) and application modes of the universal adhesive (selective etch/SEE and self-etch/SE): Group FZ+SEE, Group FZ+SE, Group MB+SEE, Group MB+SE, Group NC+SEE, and Group NC+SE. The specimens were stored in distilled water for 24 hours at 37°C and subjected to 10,000 thermocycles. Then, the teeth were stored in 0.5% methylene blue dye for 24 hours. They were examined under a stereomicroscope (40x) to evaluate microleakage. The data were statistically analyzed using the Kruskal-Wallis and Mann-Whitney U tests (p<0.05).
Results: At the occlusal margin, Group MB+SE showed a statistically lower microleakage value compared to Group FZ+SE, and Group MB+SEE showed a statistically lower microleakage value than Group FZ+SEE (p<0.05). For all restorative materials, at both the occlusal and cervical margins, no significant differences in microleakage were found between the application modes (p>0.05). Except for Group NC+SE, statistically higher microleakage scores were observed at the cervical margin than at the occlusal margin for all restorative materials (p<0.05).
Conclusion: It has been determined that Class V flowable bulk-fill composite resin restorations with both application modes of the universal adhesive system have a better microleakage performance than microhybrid composite resins at the occlusal margin.

Keywords

composite dental resin, dental leakage, dental adhesive

Akışkan bulk-fill ve akışkan geleneksel kompozitlerin farklı adeziv uygulama yöntemlerine göre mikrosızıntı skorlarının değerlendirilmesi

Abstract

Amaç: Bu in vitro çalışmanın amacı, universal adeziv sistemin farklı uygulama yöntemlerinin sınıf V akışkan kompozit restosyonların kenar mikrosızıntısı üzerine etkilerinin değerlendirilmesidir.
Gereç ve Yöntem: Bu çalışmada, toplam 60 adet sağlam premolar diş kullanıldı. Dişlerin bukkal yüzeylerine, servikal kenarı dentinde ve okluzal kenarı minede olacak şekilde standardize edilmiş Sınıf V kaviteler (3 mm x 3 mm x 1.5 mm) hazırlandı. Örnekler, kompozit rezin tipi (Filtek Z250/FZ, Metafil Bulk Fill/MB ve Nova Compo HF/NC) ve universal adezivin uygulama yöntemlerine göre (selektif etch/SEE ve self-etch/SE) rastgele 6 gruba ayrıldı: Grup FZ+SEE, Grup FZ+SE, Grup MB+SEE, Grup MB+SE, Grup NC+SEE, Grup NC+SE. Örnekler, 24 saat 37° C’de distile su içerisinde bekletildi ve 10.000 döngüde termal siklusa tabi tutuldu. Ardından, %0.5 metilen mavisi solüsyonunda 24 saat süresince bekletildi. Mikrosızıntı tespiti için, stereomikroskop altında (40x büyütme) incelendi. Verilerin istatistiksel analizinde, Kruskal Wallis ve Mann-Whitney U testleri kullanıldı (p<0.05).
Bulgular: Okluzal kenarda, Grup MB+SE, Grup FZ+SE’ye göre ve Grup MB+SEE, Grup FZ+SEE’ye göre istatistiksel olarak daha düşük mikrosızıntı değeri gösterdi (p<0.05). Hem okluzal hem servikal kenarda, tüm restoratif materyaller için, uygulama yöntemleri arasında mikrosızıntı açısından anlamlı fark bulunmadı (p>0.05). Grup NC+SE hariç, diğer tüm gruplarda servikal kenarda okluzal kenara göre istatistiksel olarak daha fazla mikrosızıntı değeri gözlendi (p<0.05).
Sonuç: Universal adeziv sistemin her iki uygulama yöntemi kullanılarak elde edilen Sınıf V akışkan bulk-fill kompozit rezin restorasyonların, okluzal kenardaki mikrosızıntı performansının mikrohibrit kompozit rezinlere göre daha iyi olduğu tespit edilmiştir.

Keywords

Kompozit dental rezin, Dental sızıntı, Dental adeziv

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