PMID- 23593635 OWN - Quintessenz Verlags-GmbH CI - Copyright Quintessenz Verlags-GmbH OCI - Copyright Quintessenz Verlags-GmbH TA - J Adhes Dent JT - The Journal of Adhesive Dentistry IS - 1757-9988 (Electronic) IP - 4 VI - 15 PST - ppublish DP - 2013 PG - 351-359 LA - en TI - Influence of Peripheral Enamel Bonding and Chlorhexidine Pretreatment on Resin Bonding to Dentin LID - 10.3290/j.jad.a29582 [doi] FAU - Lin, Jun AU - Lin J FAU - Kern, Matthias AU - Kern M FAU - Ge, Jing AU - Ge J FAU - Zhu, Jiajun AU - Zhu J FAU - Wang, Huiming AU - Wang H FAU - Vollrath, Oliver AU - Vollrath O FAU - Mehl, Christian AU - Mehl C CN - OT - microtensile testing OT - adhesive systems OT - chlorhexidine OT - dentin bonding OT - durability OT - composites OT - storage time AB - Purpose: To evaluate the influence of peripheral enamel bonding, chlorhexidine digluconate (CHX) pretreatment, and storage time on resin-dentin microtensile bond strength (µTBS) of a self-etching adhesive system and selfetching cement. Materials and Methods: Fifty-six noncarious human third molars were coronally sectioned to provide a flat dentin surface; the circumferential enamel was removed from half of these and the other half was left intact. Pretreatment with 0.2% or 2% CHX or none (control) was performed before bonding composite blocks with Panavia F2.0 or RelyX Unicem to dentin. Specimens were stored in 0.5% chloramine for 3 days (control) or 6 months. Bonded specimens were sectioned into 1-mm2 dentin-only beams and a tensile load was applied until failure. The resulting 14 test groups, defined by control group/storage time/cement/CHX application mode/enamel bonding, were analyzed using two-way and three-way ANOVA, as well as Tukey's HSD post-hoc test (α = 0.05). Failure patterns of the specimens were observed and measured using scanning electron microscopy. Results: The comparison of the control vs experimental subgroups with peripheral enamel bonding and without CHX pretreatment after six months found no significant differences regarding the µTBS between the cements (p > 0.05) but did for the storage time (p AID - 843063