Effect of push-out bond strength of a conventional and a bulk-fill composite resin as a biotechnological technique to root dentin of primary anterior teeth

This study aimed to compare the push-out bond strength of a bulk-fill and conventional composite resin root dentin primary anterior teeth using 7th-generation bonding agent. in vitro evaluated 24 randomly divided into two groups: Filtek P60 resins. Single Bond Universal adhesive was used for bonding. After filling coronal part canal with resin, were mounted acrylic sliced obtain 1-mm-thick section each root. Next, sections underwent test. determining strength, failure mode determined under light microscope at ×40 magnification. The data analyzed two-way ANOVA t-test. mean 13.37±4.40 MPa 5.40±2.91 groups. difference statistically significant (P=0.001). In group, 50% failures cohesive traditional combined while 75% losses mixed. agent as appropriate fabricating intracanal posts teeth. Keywords: Push-out, Bulk-fill Root dentin, Primary