Wear of luting materials with titanium retainer.
OBJECTIVE
The purpose of this study was to investigate the wear resistance of prosthodontic luting materials with a titanium framework by means of an in vitro three-bodied wear-testing device.


METHODS
The surfaces of flat cast titanium disks were blasted with 50 microns alumina. Placing a 50 microns masking tape on the plane surface, the disks were bonded with five luting materials. The axial surfaces of the bonded disks were ground flat with 600 grit silicon-carbide paper, and then cyclically loaded (75.6 N, 1.2 Hz) by a chewing simulator for 400,000 cycles. The distance between titanium and cement surfaces was measured in micrometers by means of a profilometer to determine delta wear, and the surface texture was evaluated with a scanning electron microscope.


RESULTS
The delta wear measurement showed that the resistance of Super-Bond Opaque adhesive was significantly higher than Panavia Fluoro adhesive and Fuji I cement after 400,000 wear cycles. No significant differences were detected among Super-Bond Opaque adhesive, Super-Bond adhesive, and All-Bond adhesive. Visually, continuity with the titanium framework was observed when the titanium disks were luted with resin systems.
Taira
Y
Y
UAB School of Dentistry, Department of Prosthodontics and Biomaterials, SDB 604, 1530 3rd Avenue, South Birmingham, AL 35294-0007, USA.
Suzuki
S
S
Atsuta
M
M
D000704:Analysis of Variance; D019554:Dental Restoration Wear; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D019279:Resin Cements; D014025:Titanium
D019279:Resin Cements; D014025:Titanium