Hatice AĞAN, Hakan TERZİOĞLU

4723

Indirek Kompozit Ve Seramik Restorasyonların Ağartılmış Mine Yüzeylerine Makaslama Bağlanma Dayanımının Değerlendirilmesi

Bu çalışmanın amacı kompozit rezin ve lityum disilikat esaslı seramiklerin, farklı adeziv rezin simanlar kullanılarak, 1 gün ve 2 hafta sonra ağartılmış mine yüzeyine makaslama bağlanma dayanımının değerlendirilmesidir. Çürüksüz 84 adet insan üst kesici dişi, düşük devirde aşındırılmış, düz mine yüzeyleri hazırlanmıştır. Örnekler rastgele kontrol grubu (Grup I) ve %30 karbamid peroksit ile ağartma yapılmış deney gruplarına; ağartmadan 1 gün sonra (Grup II), 2 hafta sonra (Grup III) ölçüm yapılmak üzere ayrılmıştır. Her grup kendi içinde dört alt gruba ayrılmıştır (n=7). Örnekler; Grup A:ışıkla sertleşen rezin siman ile lityum disilikat disklere, Grup B: ışıkla sertleşen rezin siman ile kompozit disklere, Grup C: dual-cure rezin siman ile lityumdisilikat disklere, Grup D: dual-cure rezin siman ile kompozit disklere simante edildi. Simantasyon işlemi üretici firmanın önerileri doğrultusunda yapıldı. 1000 ısıl döngü işleminden sonra universal test cihazı ile makaslama bağlanma dayanımı ölçüldü. Sonuçlar 3 yönlü ANOVA VE Tukey’s HSD testi ile değerlendirildi. Ağartma yapılmış gruplara (Grup II & Grup III) göre; kontrol grubu (Grup I) istatistiksel olarak anlamlı yüksek makaslama bağlanma dayanımı göstermiştir (p˂0,05) Tüm alt gruplarda Grup II en düşük değerleri gösterdi. Kompozit ve seramik grupları arasında anlamlı farklılık görülmedi. Ancak yapıştırıcı ajan olarak dual cure rezin siman, ışıkla sertleşen rezin simandan istatistiksel olarak anlamlı, düşük makaslama bağlanma dayanımı göstermiştir (p˂0,05) Ağartma istatistiksel olarak bağlanma dayanımını düşürür. Ağartma işleminden 2 hafta sonraki bağlanma kuvveti 1 gün sonrakinden daha yüksektir. Kompozit gruplar arasında bağlanım açısından siman grupları arasında farklılık yoktur. Seramik gruplarda, ışıkla sertleşen rezin siman dual cure simandan daha iyi sonuç vermiştir.
Anahtar Kelimeler:

ağartma, karbamid peroksit, makaslama dayanımı, mine, rezin siman

Evaluation of Shear Bond Strengths of Indirect Composite and Ceramic Restorations to Bleached Enamel

The aim of this study was to determine the shear bond strength of composite resin and lithium disilicate porcelain to bleached enamel 1 day or 2 weeks later using different adhesive resin luting cement. 84 flat enamel surfaces were prepared from freshly extracted non-carious human maxillary permanent incisors using low speed diamond saw. Specimens were randomly assigned to a control group (Group I) and two experimental bleaching groups accoding to the 1st day (Group II) or 2 weeks (Group III) after bleaching treatment with %30 carbamide peroxide (Zaris White&Brite, %30). Each group were divided into four subgroups (n=7); Group A: Specimens were luted to lithium disilicate blocks with light cure resin cement. Group B: Specimens were luted to composite resin blocks with light cure resin cement. Group C:Specimens were luted to lithium disilicate blocks with dual cure resin cement, Group D:Specimens were luted to composite resin blocks with dual cure resin cement. Surface preparations of the specimens and cementation procedure was done due to manufacturer's recommendations. Specimens were thermocycled 1000 times and shear bond strengths were determined using a universal testing machine. The data was evaluated using 3 way ANOVA and Tukey’s HSD tests. Control group (Group I) demonstrated significantly higher shear bond strength than bleaching groups (Group II & Group III) (p˂0.05). In all subgroups. Group II shows the lowest scores. There were no statistically significant difference found among composite and ceramic material results. But as a luting agent; dual cure resin cement showed statistically significant lower shear bond strength values than light cure resin cement (p˂0.05) . Bleaching significantly decreased bond strength. Bonding after 2 weeks demonstrated higher bond strengths than after 1 day. There was no statistically significant difference among luting agents in composite groups. Light cured resin cement showed better results than dual cured in ceramic groups.
Keywords:

bleaching, carbamide peroxide, shear bond strength, enamel, resin cements,

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Uluslararası Diş Hekimliği Bilimleri Dergisi-Cover
  • ISSN: 2149-8628
  • Yayın Aralığı: Yılda 3 Sayı
  • Yayıncı: Zonguldak Bülent Ecevit Üniversitesi
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