Effect of different solvent evaporation strategies on bond strength of fiber posts to root canal dentin: push-out test

Year 2017, Volume: 42 Issue: 2, 264 - 270, 30.06.2017

Görkem Özbilen Ayşin Dumani

https://doi.org/10.17826/cutf.322888

Abstract

Purpose: The aim of this study was to evaluate the efficacy of different solvent removal strategies on the push-out bond strength of fiber posts to root canal dentin.

Materials and Methods: Root canals of 30 extracted maxillary human central incisors were enlarged with TF Adaptive file system (SybronEndo, CA, USA). After root canal obturation, post spaces were prepared to a depth of 8 mm. Then, the adhesive system (ED Primer A + ED Primer B, Kuraray, Tokyo, Japan) application, specimens were randomly assigned into two solvent evaporation strategies as follows APA: 10 s air-blowing, followed by insertion of 60 size absorbent paper point, followed by 10 s additional air-blowing, EV: 10 s air-blowing, followed by 40 sec apical negative pressure by Endo-Vac (Discus Dental, CA, USA) followed by 10 s additional air-blowing. Resin fiber posts (E Hahnenkratt GmbH) were luted with resin cement (Panavia F 2.0, Kuraray) and then light-cured for 40 s from all directions. All specimens were then stored at 95% humidity for 48-h at 37°C. Then push-out test has been conducted..

Results: In comparison of groups there were no statistically significant differences on the push-out bond strength values of fiber post to root canal dentine in the coronal and apical out bond strength values than EV group.

Conclusion: Evaporation strategy of self-etch adesive with EndoVac had no positive effect on the bond strength of fiber post to root canal dentin.

Keywords

Fiber post, adhesive, solvent evaporation, push-out bond strength

Farklı çözücü buharlaşma stratejilerinin fiber postların kök kanal dentinine bağlanma dayanımına etkilerinin değerlendirilmesi: push-out testi

Abstract

Amaç: Bu çalışmanın amacı, farklı çözücü buharlaşma stratejilerinin fiber postların kök kanal dentinine bağlanma dayanımına etkisini değerlendirmektir.

Gereç ve Yöntem: Otuz adet çekilmiş insan üst santral kesici dişlerin kök kanalları TF Adaptive eğe sistemi (SybronEndo, CA, ABD) kullanılarak genişletildi. Kök kanal dolgusu yapıldıktan sonra post boşlukları 8 mm derinliğinde hazırlandı. Adeziv sistemi (ED Primer A + ED Primer B; Kuraray, Tokyo, Japonya) uygulamasının ardından örnekler rastgele iki gruba ayrıldı. Grup 1 (APA Grubu): 10 sn hava ile kurutmayı takiben kâğıt kon ile kurutma yapıldı, sonrasında ek olarak 10 sn daha hava uygulandı. Grup 2 (EV Grubu):  10 sn hava kurutmayı takiben EndoVac (Discus Dental, CA, ABD) ile 40 sn apikal negatif basınç ile kurutma yapıldı ardından da ek olarak 10 sn daha hava uygulandı. Fiber postlar (E Hahnenkratt GmbH) rezin siman ile yapıştırıldıktan sonra 40 sn boyunca her yönden ışınlandı. Bütün örnekler 48 saat boyunca %95 nemlilikte 37 °C’de saklandı. Daha sonar Push-out testi uygulandı.

Bulgular: Fiber postların kök kanal dentinine bağlanma dayanım değerleri koronal ve apikal kısımda istatistiksel olarak anlamlı bir farklılık göstermemiştir. Ancak, orta üçlüde APA grubu EV grubuna göre istatistiksel olarak daha yüksek bağlanma dayanımı göstermiştir.

Sonuç: EndoVac uygulanarak yapılan çözücü buharlaştırma yönteminin fiber postların kök kanal dentinine bağlanma dayanımına olumlu bir etkisi olmamıştır.

Keywords

Fiber post, adeziv, çözücü uzaklaştırma, bağlanma dayanımı

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