Early bond strength and durability of bond between a ceramic material and chemically-cured or dual-cured resin luting agent.
OBJECTIVE
To evaluate the influence of the different polymerization types of two chemically-cured (Panavia 21 and Super-Bond C&B) and three dual-cured (Panavia Fluoro Cement, Clapearl DC, and Vita Cerec Duo Cement) resin luting agents on the early bond strengths and durability of bond to a Cerec 2 ceramic material.


METHODS
The Cerec 2 ceramic specimens were prepared with No. 600 silicon carbide paper and their surfaces were etched with phosphoric acid gel, and applied with silane coupling agent. Two sizes of specimens were then bonded together with each of the five luting agents. Shear bond tests were performed 10 mins or 20 mins after preparing specimens, storage in water at 37 degrees C for 24 hrs, and/or 20,000 thermocycles between 4 degrees C and 60 degrees C water baths.


RESULTS
The specimens bonded with one of the three dual-cured resin luting agents showed almost the same shear bond strengths for all four storage conditions. However, two chemically-cured resin luting agents exhibited much lower shear bond strengths at 10- and 20-min intervals than at 0 and 20,000 thermocycles. Three dual-cured resin luting agents showed significantly higher bond strengths than two chemically-cured resin luting agents at 10- and 20-min intervals.
Kamada
K
K
Department of Fixed Prosthodontics, Nagasaki University School of Dentistry, 1-7-1, Sakamoto, Nagasaki 852-8588, Japan.
Yoshida
K
K
Atsuta
M
M
D000704:Analysis of Variance; D001840:Dental Bonding; D003776:Dental Porcelain; D008422:Materials Testing; D011108:Polymers / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D018709:Statistics, Nonparametric; D013718:Tensile Strength
D011108:Polymers; D019279:Resin Cements; C082340:Vita Mark II; D003776:Dental Porcelain