Evaluatıon Of Bondıng Strength Wıth Dıfferent Methods In Endodontıc Post Applıcatıons

Thesis Type: Doctorate

Institution Of The Thesis: Gazi University, Sağlık Bilimleri Enstitüsü, ENDODONTİ ANABİLİM DALI, Turkey

Approval Date: 2019

Thesis Language: Turkish


Supervisor: Sis Yaman


Aim: The aim of this study investigate bond strength with push-out test on post applied

teeth with three different self adhesive resin cement on obturated and unobturated root

canal and evaluated dentin tubule penetration with using confocal laser scanning

microscopy(CLSM) imaging technic and correlation between bond strenght and dentin

tubule penetreation of self adhesive resin cement. Material and Method: In this study 180

mandibular second premolar teeth roots were used. Fiber posts (Reforpost®) were applied

into the root canals with using three self adhesive resin cements (Maxcem Elite™,

RelyX™ U200, Panavia™ SA) with/without root canal filling(n = 15). Before insertion of

the post, sealer were labeled with fluorescein and the resin cement was labeled with

rhodamine B isothiocyanate. The roots were sectioned and each slice was analyzed using

confocal laser scanning microscopy. Bond strengths were measured using a micro push-out

test. Result: Push-out bond strenght value of obturated and unobturated group did not

showed significant difference. Bond strenght showed a statistically significant difference at

coronal part(p<0.005). The groups which has unobturated root canals exhibited statistically

different results at dentin tubule penetration depth for Panavia™ SA and RelyX™ U200

applications (p<0,001). Panavia™ SA exhibited greater dentin tubular penetration

percentage(p=0,003). Conclusion: Panavia™ SA and RelyX™ U200 cement the better

bond strength and better dentine tubule penetration values than Maxcem Elite™ cement.

Key Words : c onfocal laser scanning microscopy, fiber post, self adhesive resin cement