Bonding effectiveness of composite-dentin interfaces after mechanical loading with a new device (Rub&Roll)

Abstract

This study evaluated the effect of mechanical loading with a new device on the microtensile bond strength (µTBS) of adhesive systems to dentin. Forty molars were divided according to adhesive systems: self-etch (Clearfil TM SE Bond -CSE) and etch-and-rinse (Adper Scotchbond TM 1XT -ASB); and to aging (n=5): control; MC1-250,000; MC2-500,000; and MC3-750,000 mechanical cycles. Microtensile bond strength was measured and fracture modes were analyzed. Data for µTBS were subjected to Kruskal-Wallis and post hoc tests (p<0.05). Mechanical loading (p<0.001) and adhesive systems (p=0.024) affected µTBS values. The adhesive systems showed a similar behavior, except in the MC3 group, which the self-etch CSE showed the highest µTBS. The new device promotes a decreasing of µTBS as the number of cycles increased. Difference between materials was observed only after 750,000 mechanical cycles.

Assessment of Bonding Effectiveness of Adhesive Materials to Tooth Structure using Bond Strength Test Methods: A Review of Literature

“…The specimen gripping procedures require special test jigs, such as the Bencor multi-T gripping device and Ciucchi's jig where the specimens are glued to a flat gripping surface, thus resulting in possible malalignment [ 41 ]. Geraldeli's jig and modified Ciucchi's jig were used to enhance the specimen alignment [ 89 ]. A self-aligning, glueless, passive gripping device, named as Dirck's device was introduced recently [ 89 ].…”

“…Geraldeli's jig and modified Ciucchi's jig were used to enhance the specimen alignment [ 89 ]. A self-aligning, glueless, passive gripping device, named as Dirck's device was introduced recently [ 89 ]. The advantage of this device is that it is less sensitive to human errors than Geraldeli's jig, and results in a more uniform stress distribution at the dumbbell specimen adhesive layer than does the Geraldeli's device at the stick layer [ 32 ].…”

Bonding state of metal-free CAD/CAM onlay restoration after cyclic loading with and without immediate dentin sealing

“…The effect of cyclic load on the μ-TBS of metal-free restoration has been examined in previous studies 14,[31][32][33][34] , and it was clear that the μ-TBS was significantly influenced by the cyclic load, and the μ-TBS with a cyclic load was significantly smaller than that without a load [31][32][33][34] . Therefore, a cyclic load condition was set and used for every restored specimen in this study.…”

Effects of Short-Term Exposure of Chloramine-T Solution on the Characteristics of Light-Cured and Chemical-Cured Adhesives

“…Nonetheless, it is very important to evaluate the clinical performance of dental adhesives in a more clinically relevant environment [64]. Also, considering the direct contact of dental adhesives with both hard and soft dental tissues, the evaluation of biocompatibility, bioactivity, and biodegradability of dental adhesives needs to be addressed critically [65,66].…”