Effects of dentin bonding agents on bonding durability of a flowable composite to dentin.
The present study evaluated the bonding durability of a flowable composite on bovine dentin using dentin bonding agents with different numbers of application steps: Scotchbond Multipurpose (three steps), Prime & Bond NT and One-Step (two steps), AQ Bond and Prompt L-Pop (one step). Shear bond strength tests were performed, and resin-dentin interface and fracture mode were observed. There were no significant differences in bond strength among the specimens within 37 degrees C storage group (p > 0.05) and post-thermocycling group, except between Prompt L-Pop and Scotchbond Multipurpose (p < 0.05) in the post-thermocycling group. Further, Scotchbond Multipurpose and One-Step showed significantly lower bond strengths after thermocycling (p < 0.05). It was thus shown that the use of simplified bonding agents did not necessarily improve the bonding strength of flowable composites.
Nam
Ki-Young
KY
Department of Dentistry, College of Medicine, Keimyung University, 194 Dongsan-dong, Jung-gu, Daegu 700-712, Korea. nykp@dsmc.or.kr
Kim
Jong-Bae
JB
Jang
Byeong-Churl
BC
Kwon
Tae-Yub
TY
Kim
Kyo-Han
KH
D000704:Analysis of Variance; D000818:Animals; D002417:Cattle; D003188:Composite Resins; D001840:Dental Bonding; D019232:Dental Restoration Failure; D003799:Dental Stress Analysis; D003804:Dentin; D017220:Dentin-Bonding Agents; D004356:Drug Storage; D008422:Materials Testing; D019279:Resin Cements; D012212:Rheology; D033081:Shear Strength; D013997:Time Factors
D003188:Composite Resins; D017220:Dentin-Bonding Agents; C467913:Filtek Flow; D019279:Resin Cements