Yüzey Hazırlık Yöntemlerinin Bağlanma Dayanımı ve Geçici Restorasyonun Uzaklaştırma Etkinliği Üzerine Etkisi

Abstract

Amaç: Geçici restorasyon uygulaması ve yüzey hazırlık yöntemlerinin, immediate dentin sealing(IDS) uygulanan dentin yüzeylerinde rezin simanın makaslama bağlanma dayanımı(SBS) üzerindeki etkisini değerlendirmek ve geçici restorasyonun uzaklaştırılma etkinliği ile SBS arasındaki ilişkiyi incelemek amaçlanmıştır. Gereç ve Yöntemler: Kırk adet çekilmiş insan molar dişinde düz dentin yüzeyleri hazırlanarak IDS uygulandı. Örnekler rastgele dört gruba ayrıldı(n=10): geçici restorasyon uygulanmaksızın silika kaplı alüminyum oksit ile air-abrazyon veya aşındırıcı pasta ile yüzey hazırlığı yapılan kontrol grupları, geçici restorasyon uygulanan ve restorasyonun uzaklaştırılmasını takiben air-abrazyon veya aşındırıcı pasta ile yüzey hazırlığı yapılan test grupları. Test gruplarında geçici restorasyonlar uygulandı, distile suda 7-gün bekletildi ve dental sond ile uzaklaştırıldı. Tüm örneklerin yüzeyleri ilgili yüzey hazırlık protokolüne göre temizlenerek dual-cure rezin siman uygulandı. Termal döngü işlemini takiben SBS testi gerçekleştirildi. Yüzey işleminden önce ve sonra alınan floresans görüntüleri ile rezidüel geçici materyal miktarı belirlendi, uzaklaştırma etkinliği(%) hesaplandı. Elde edilen veriler tek yönlü varyans analizi, Tukey post-hoc ve Pearson korelasyon testi ile değerlendirildi. Bulgular: Geçici restorasyon uygulanan grupların ortalama SBS değerleri, kontrol gruplarına göre anlamlı derecede daha düşüktü(p<0,05). Yüzey hazırlık yöntemleri arasında SBS açısından anlamlı bir fark izlenmedi. Ortalama uzaklaştırma etkinliği air-abrazyon için %72,6±22,0, aşındırıcı pasta için ise %59,7±34,5 olarak hesaplandı(p=0,380). Uzaklaştırma etkinliği ile SBS arasında pozitif bir korelasyon saptandı(r=0,83, p<0,01). Sonuç: Geçici restorasyonların uygulanması, yüzey hazırlık yönteminden bağımsız olarak IDS-uygulanan dentin yüzeylerinde SBS’yi önemli ölçüde azaltmıştır. Her iki temizlik protokolü de rezidüel geçici materyali etkin biçimde uzaklaştırmasına rağmen, kontrol grubundaki SBS değerlerini sağlayamamıştır. Uzaklaştırma etkinliğindeki artışın yüksek bağlanma dayanımı değerleri ile ilişkili olması, etkili yüzey temizliğinin önemini vurgulamaktadır.

Keywords

• Air-abrazyon
• Dental bonding
• Geçici diş restorasyonları
• Makaslama dayanımı

Effect of Surface Pretreatments on the Bond Strength and Removal Efficiency of Temporary Restoration

Abstract

Objectives: To evaluate the effect of temporary restoration and different surface pretreatment methods on the shear bond strength (SBS) of resin cement to dentin surfaces coated with immediate dentin sealing (IDS), and assess the relationship between removal efficiency and SBS. Materials and Methods: Forty extracted human molars were prepared to obtain flat dentin surfaces and IDS was applied. Specimens were randomly assigned into four groups (n=10): air abrasion with silica-coated alumina or polishing using abrasive paste, with and without temporary restoration. In the test groups, temporary restorations were applied, stored in distilled water for 7-days, and removed using dental probe. The surfaces of all specimens were pretreated with either air abrasion or polishing and then restored with a dual-cure resin cement. After thermocycling, SBS was tested. Fluorescence images obtained before and after surface pretreatment were used to quantify residual temporary material and to calculate removal efficiency. Data were analyzed using one-way ANOVA, Tukey’s post hoc, and Pearson’s correlations tests. Results: The mean SBS values of temporary groups were significantly lower than control groups (p<0.05). No significant difference was observed between pretreatment methods. The mean removal efficiency was 72.6±22% for air abrasion and 59.7±34.5% for polishing (p=0.380). A positive correlation existed between removal efficiency and SBS (r=0.83, p<0.01). Conclusion: Temporization significantly reduced the SBS to IDS-applied dentin, regardless of the surface pretreatment method. Both cleaning approaches removed residues effectively but neither restored initial strength. Higher removal efficiency correlated with improved adhesion, emphasizing the importance of effective cleaning after using temporary material.

Keywords

• Air-abrasion
• Dental bonding
• Shear strength
• Temporary dental restorations

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