title: Clinical wear performance of eight experimental dental composites over three years determined by two measuring methods.
abstract: The effect of matrix selection, filler composition, filler silanization, operator variations, and test site (dental clinic) on the wear rate of eight composites were evaluated. The wear was measured on replicas using both a microscopic and a laser scanning measuring method. The average wear rate on contact-free surfaces was 9.2 +/- 4.2 microm/month with the microscopic measurement and 8.5 +/- 3.7 microm/ month with the laser scanner over the 36-month period. The urethane-based composites performed significantly better than those which were bisGMA-based. Restorations placed at one dental clinic showed significantly lower initial wear. There was also a significant difference between the operators that was most pronounced during the first 6 months. The other variable (filler composition and silane treatment) did not affect the wear rate significantly.
authors.affiliation: University of Florida, Gainesville,  USA. ksoderholm@dental.ufl.edu
authors.forename: K J
authors.initials: KJ
authors.lastname: Söderholm
authors.forename: P
authors.initials: P
authors.lastname: Lambrechts
authors.forename: D
authors.initials: D
authors.lastname: Sarrett
authors.forename: Y
authors.initials: Y
authors.lastname: Abe
authors.forename: M C
authors.initials: MC
authors.lastname: Yang
authors.forename: R
authors.initials: R
authors.lastname: Labella
authors.forename: E
authors.initials: E
authors.lastname: Yildiz
authors.forename: G
authors.initials: G
authors.lastname: Willems
mesh_terms: D017609:Barium Compounds / Q000737:chemistry; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry*; D003775:Dental Polishing; D019554:Dental Restoration Wear; D003793:Dental Restoration, Permanent / Q000145:classification / Q000379:methods; D005500:Follow-Up Studies; D006358:Hot Temperature; D006801:Humans; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008853:Microscopy; D018613:Microscopy, Confocal; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D011140:Polyurethanes / Q000737:chemistry; D011791:Quartz / Q000737:chemistry; D016628:Replica Techniques; D019279:Resin Cements / Q000737:chemistry; D012821:Silanes / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D013223:Statistics as Topic; D013499:Surface Properties; D016019:Survival Analysis
chemical_list: D017609:Barium Compounds; D003188:Composite Resins; D008689:Methacrylates; D011109:Polymethacrylic Acids; D011140:Polyurethanes; D019279:Resin Cements; D012821:Silanes; C102738:barium glass filler; C029824:urethane dimethacrylate luting resin; D011791:Quartz; C020946:triethylene glycol dimethacrylate; C017492:methacryloxypropyltrimethoxysilane; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate; D012822:Silicon Dioxide