Effect of dentin adhesives used as sealers and provisional cementation on bond strength of a resin cement to dentin.
OBJECTIVE
To evaluate the effects of dentin adhesives employed as resin sealers and provisional cementation on the bond strengths of a resin cement to dentin.


METHODS
A two-step etch-and-rinse adhesive (Excite DSC--Group 1) and two-step self-etch adhesive (AdheSE--Group 2) were applied to exposed dentin surfaces prepared from human molars (N=4). Water was used instead of a resin sealer in control Groups 3 and 4. A eugenol-free provisional cement (except for Group 4) was applied to the treated surfaces. After storing in distilled water for 1 week, the provisional cement was removed and cylindrical composite blocks were luted with a resin cement (Variolink II). 0.9 x 0.9 mm sticks were produced from these luted specimens for microtensile bond testing and SEM examination.


RESULTS
One-way ANOVA revealed that neither the resin sealer nor the temporary eugenol-free cement had a negative effect on the final bond strength (P> 0.05). Mixed failures were predominantly identified from SEM.
Chieffi
Nicoletta
N
Department of Dental Materials, School of Dentistry, University of Siena, Italy.
Sadek
Fernanda
F
Monticelli
Francesca
F
Goracci
Cecilia
C
Grandini
Simone
S
Davidson
Carel
C
Tay
Franklin R
FR
Ferrari
Marco
M
D000180:Acrylic Resins; D000704:Analysis of Variance; D002484:Cementation; D001840:Dental Bonding / Q000379:methods*; D003738:Dental Cements; D003794:Dental Restoration, Temporary / Q000379:methods*; D003799:Dental Stress Analysis; D003804:Dentin; D017220:Dentin-Bonding Agents; D006801:Humans; D007284:Inlays; D008422:Materials Testing; D008689:Methacrylates; D008963:Molar; D019279:Resin Cements; D018709:Statistics, Nonparametric; D013718:Tensile Strength
D000180:Acrylic Resins; C489662:AdheSE cement; D003738:Dental Cements; D017220:Dentin-Bonding Agents; C420130:Excite cement; D008689:Methacrylates; D019279:Resin Cements; C103502:Variolink