Shear bond strength of resin luting cement to glass-infiltrated porous aluminum oxide cores.
BACKGROUND
Resin bonding surface treatment methods for conventional silica-based dental ceramics are not reliable for glass infiltrated high alumina content In-Ceram ceramics.


OBJECTIVE
This study developed an alternative surface treatment to improve resin bonding of glass-infiltrated aluminum oxide ceramic blasting with diamond particles and then observed the efficiency of this treatment. Material and methods. In-Ceram test specimens were prepared and divided into 2 groups. All specimens were sandblasted with Al(2)O(3), and blasted with diamond particles and 2 adhesive resins were applied. After bonding and storage in humid conditions, shear bond strength values were measured with a universal testing machine. Surface roughness and fracture interfaces were determined with a perthometer and a SEM.


RESULTS
The highest bond strength was obtained on the samples blasted with diamond particles (group II). The differences between the 2 groups and the 2 adhesive resin cements were both statistically significant.


CONCLUSIONS
Panavia-Ex cement exhibited higher bond strength than Super-Bond cement. This higher bond strength was attributed to ceramic oxide and ester bond and the mechanical properties of Panavia-Ex cement.
Sen
D
D
Istanbul University and Istanbul Technical University, Istanbul, Turkey. dsen@istanbul.edu.tr
Poyrazoglu
E
E
Tuncelli
B
B
Göller
G
G
D000537:Aluminum Oxide; D000704:Analysis of Variance; D001896:Boron Compounds; D001840:Dental Bonding; D003776:Dental Porcelain; D017220:Dentin-Bonding Agents; D018130:Diamond; D005898:Glass; D008422:Materials Testing; D008689:Methacrylates; D008768:Methylmethacrylates; D008855:Microscopy, Electron, Scanning; D010710:Phosphates; D019279:Resin Cements; D013499:Surface Properties; D013718:Tensile Strength
D001896:Boron Compounds; D017220:Dentin-Bonding Agents; D008689:Methacrylates; D008768:Methylmethacrylates; D010710:Phosphates; D019279:Resin Cements; D003776:Dental Porcelain; C070870:In-Ceram; D018130:Diamond; C052304:Panavia EX; C049495:Super-bond; D000537:Aluminum Oxide