Antagonist enamel wears more than ceramic inlays.
Wear phenomena of ceramic inlays are not fully understood. The aim of the present study was to evaluate ceramic wear, antagonist enamel wear, and luting cement wear over 8 years. The two-fold null hypothesis was that there would be (1) no difference in wear behavior between ceramic and enamel, and (2) no influence of filler content of luting composites on composite wear. From 96 restorations, 36 Class II inlays from 16 participants were selected. For inlays with opposing enamel cusps (n=17), replicas of inlays and enamel were scanned with a 3-D laser scanner. Luting gaps of inlays (n=36) were analyzed with a profilometer, including 3-D data analysis. Ceramic and enamel wear increased between 4 and 8 years, with significantly higher values for enamel after 6 years (p<0.05). Luting gap wear increased continuously up to 8 years (p<0.05), with no influence of luting composites (p>0.05) and location of teeth (p>0.05).
Krämer
N
N
Department of Pediatric Dentistry, University Medical Center Carl Gustav Carus, Technical University of Dresden, Fetscherstrasse 74, D-01307, Dresden, Germany.
Kunzelmann
K-H
KH
Taschner
M
M
Mehl
A
A
Garcia-Godoy
F
F
Frankenberger
R
R
D000328:Adult; D000538:Aluminum Silicates / Q000737:chemistry; D001641:Bicuspid / Q000473:pathology; D003188:Composite Resins / Q000737:chemistry; D003743:Dental Enamel / Q000473:pathology*; D003776:Dental Porcelain / Q000737:chemistry*; D019554:Dental Restoration Wear / Q000145:classification; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007091:Image Processing, Computer-Assisted; D021621:Imaging, Three-Dimensional; D007284:Inlays / Q000145:classification; D007834:Lasers; D008297:Male; D008963:Molar / Q000473:pathology; D016628:Replica Techniques; D019279:Resin Cements / Q000737:chemistry*; D013499:Surface Properties; D014072:Tooth Abrasion / Q000473:pathology*
D000538:Aluminum Silicates; D003188:Composite Resins; C075815:IPS-Empress ceramic; D019279:Resin Cements; C090969:Tetric; D003776:Dental Porcelain; C103502:Variolink