Six-month evaluation of a resin/dentin interface created by methacrylate and silorane-based materials

Objectives: this study aimed to compare the micro-tensile bond strength of methacrylate resin systems to a silorane-based restorative system on dentin after 24 hours and six months water storage. material and methods: the restorative systems adper single bond 2/filtek z350 (asb),clearfil se bond/z350 (cf),adper se plus/z350 (asep) and p90 adhesive system/filtek p90 (p90) were applied on flat dentin surfaces of 20 third molars (n = 5). the restored teeth were sectioned perpendicularly to the bonding interface to obtain sticks (0.8 mm2) to be tested after 24 hours (24 h) and 6 months (6 m) of water storage,in a universal testing machine at 0.5 mm/min. the data was analyzed via two way analysis of variance/bonferroni post hoc tests at 5% global signifcance. results: overall outcomes did not indicate a statistical difference for the resin systems (p=0.26) nor time (p=0.62). no interaction between material xtime was detected (p=0.28). mean standard-deviation in mpa at 24 h and 6 m were: asb 31.38 (4.53) and 30.06 (1.95),cf 34.26 (3.47) and 32.75 (4.18),asep 29.54 (4.14) and 33.47 (2.47),p90 30.27 (2.03) and 31.34 (2.19). conclusions: the silorane-based system showed a similar performance to methacrylate-based materials on dentin. all systems were stable in terms of bond strength up to 6 month of water storage.