TY - JOUR
T1 - Effect of self-curing activators and curing protocols on adhesive properties of universal adhesives bonded to dual-cured composites
AU - Gutiérrez, Mario Felipe
AU - Sutil, Elisama
AU - Malaquias, Pâmela
AU - de Paris Matos, Thalita
AU - de Souza, Lucas Marques
AU - Reis, Alessandra
AU - Perdigão, Jorge
AU - Loguercio, Alessandro D.
N1 - Publisher Copyright:
© 2017 The Academy of Dental Materials
PY - 2017/7
Y1 - 2017/7
N2 - Objectives To measure microshear bond strength (μSBS) and nanoleakage (NL) of self-etch universal adhesives under core buildup restorations using different curing protocols, at 24 h and after 6-month water storage. Methods Middle dentin of 55 molars was divided into: Clearfil Universal Bond [CFU], Prime&Bond Elect [PBE], and One Coat 7 Universal [OCU]. All-Bond Universal [ABU] and Clearfil SE Bond [CSE] were used as control. CFU, PBE and OCU were: light-cured [LC], dual-cured [DC] and self-cured [SC]. Data were analyzed separately (two-way ANOVA), Tukey's test (α = 0.05). Results μSBS: At 24 h OCU/LC resulted in statistically higher μSBS than ABU. CSE/DC showed statistically higher μSBS than all DC adhesives. PBE/LC resulted in significant lower μSBS than the respective DC/SC modes (p < 0.001). At 6-month, both CFU and PBE (LC/SC), resulted in a significant decrease in μSBS. μSBS for OCU/DC decreased significantly (p < 0.001) compared to the respective LC/SC modes. NL: At 24 h, ABU showed %NL similar to CBU/LC and OCU/LC (p > 0.05). CSE/DC resulted in significantly higher %NL than OCU/DC but significantly lower than PBE/DC. CFU/LC/SC resulted in significantly lower %NL than CFU/DC. PBE/SC resulted in significant lower %NL than PBE/LC and PBE/DC. OCU/LC and OCU/DC resulted in significant lower %NL than OCU/SC (p < 0.001). At 6-month ABU, CSE, CFU/LC and CFU/SC, resulted in a significant increase in %NL. Significance Self-cured activator and different curing protocols influenced μSBS and NL of self-etch universal adhesives, but this influence was material-dependent.
AB - Objectives To measure microshear bond strength (μSBS) and nanoleakage (NL) of self-etch universal adhesives under core buildup restorations using different curing protocols, at 24 h and after 6-month water storage. Methods Middle dentin of 55 molars was divided into: Clearfil Universal Bond [CFU], Prime&Bond Elect [PBE], and One Coat 7 Universal [OCU]. All-Bond Universal [ABU] and Clearfil SE Bond [CSE] were used as control. CFU, PBE and OCU were: light-cured [LC], dual-cured [DC] and self-cured [SC]. Data were analyzed separately (two-way ANOVA), Tukey's test (α = 0.05). Results μSBS: At 24 h OCU/LC resulted in statistically higher μSBS than ABU. CSE/DC showed statistically higher μSBS than all DC adhesives. PBE/LC resulted in significant lower μSBS than the respective DC/SC modes (p < 0.001). At 6-month, both CFU and PBE (LC/SC), resulted in a significant decrease in μSBS. μSBS for OCU/DC decreased significantly (p < 0.001) compared to the respective LC/SC modes. NL: At 24 h, ABU showed %NL similar to CBU/LC and OCU/LC (p > 0.05). CSE/DC resulted in significantly higher %NL than OCU/DC but significantly lower than PBE/DC. CFU/LC/SC resulted in significantly lower %NL than CFU/DC. PBE/SC resulted in significant lower %NL than PBE/LC and PBE/DC. OCU/LC and OCU/DC resulted in significant lower %NL than OCU/SC (p < 0.001). At 6-month ABU, CSE, CFU/LC and CFU/SC, resulted in a significant increase in %NL. Significance Self-cured activator and different curing protocols influenced μSBS and NL of self-etch universal adhesives, but this influence was material-dependent.
KW - Buildup composites
KW - Microshear bond strength
KW - Nanoleakage
KW - Self-cured activator
KW - Universal adhesives
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U2 - 10.1016/j.dental.2017.04.005
DO - 10.1016/j.dental.2017.04.005
M3 - Article
C2 - 28487037
AN - SCOPUS:85018456454
SN - 0109-5641
VL - 33
SP - 775
EP - 787
JO - Dental Materials
JF - Dental Materials
IS - 7
ER -