Yasmeen S. Mahmoud, Dalia A. Saba And Taheya A. Moussa,

ABSTRACT


Aim: Evaluation Of Push Out Bond Strength Of Resin Sealer To Dentin After Irrigation With NaOCl Followed Grape Seed Extract (GSE) Versus NaOCl Followed By EDTA. Methods And Material: A Total Of 12 Human Teeth Were Randomly Divided Into 2 Groups; (6 Teeth /group) According To The Irrigation Protocol; Intervention (5.25% NaOCl+ 13% GSE) And Comparator (5.25% NaOCl+ 17% EDTA) Groups. Mechanical Instrumentation Was Performed Coupled With Application Of The Corresponding Irrigant Protocol For Each Group. After Obturation And Thermocycling Of The Roots, Each Root Was Sectioned Horizontally Into 3 Thirds And Subdivided Into 3 Subgroups; Coronal, Middle And Apical (n=6). Each Specimen Was Aligned In The Universal Testing Machine And Push-out Test Was Performed. Statistical Analysis: Data Of Push Out Bond Strength Were Statistically Analysed Using Unpaired T Test (p<0.05).

Results: The Results Showed No Significant Difference In Bond Strength Values (MPa) Between The Intervention And Comparator Subgroups In Coronal (p=0.566), Middle (p=0.382) And Apical (p=0.177) Thirds. Within The Intervention Subgroups, The Bond Strength Values In The Apical Third (17.38�3.8 MPa) Was Significantly Higher (p=0.002) Than That In The Coronal (9.35�0.77 MPa) And The Middle Thirds (12.91�2.23 MPa).

Conclusions: Within The Limitations Of The Present Study, It Could Be Concluded That Irrigation With NaOCl Followed By GSE Has A Comparable Effect To NaOCl Followed By EDTA On Push-out Bond Strength Of Resin Sealer. GSE Represents A Better Natural Alternative Irrigant To EDTA Following NaOCl.