title: Wear and microhardness of different resin composite materials.
abstract: This study determined the three-body abrasive wear resistance of two packable composites (P-60; Solitaire 2), an ion-releasing composite (Ariston AT), a hybrid composite (Tetric Ceram) and an ormocer (Admira). The study also looked at the correlation between wear resistance and hardness of the composites. Three-body wear testing was performed using an ACTA wear machine with 15 N contact force using millet seed as the third body. Wear depth (microm) was measured by profilometry after 200,000 cycles. The hardness test was performed using a digital microhardness tester (load: 500 g; dwell time: 15 seconds). The data were analyzed by using Kruskal Wallis (p < 0.05). There were statistically significant differences among the three body abrasive wear of the composites. The ranking from least to most were as follows: Filtek P-60 < Solitaire 2 < Ariston AT < Tetric Ceram < Admira. Filtek P-60 showed the highest microhardness value. No other significant differences in hardness were observed among the different resin composites (P-60 > AristonAT = Tetric Ceram = Solitaire 2 = Admira). The results of this study indicate that there are significant differences in the wear resistance of the resin composites. The correlation between hardness and wear was significant with a correlation coefficient of r:-0.91. A significant negative correlation exists between hardness and three-body wear of resin composites.
authors.affiliation: Department of Operative Dentistry, Faculty of Dentistry, Yeditepe University, Istanbul, Turkey. esracan@hotmail.com
authors.forename: Esra Can
authors.initials: EC
authors.lastname: Say
authors.forename: Arzu
authors.initials: A
authors.lastname: Civelek
authors.forename: Alain
authors.initials: A
authors.lastname: Nobecourt
authors.forename: Mustafa
authors.initials: M
authors.lastname: Ersoy
authors.forename: Canan
authors.initials: C
authors.lastname: Guleryuz
mesh_terms: D000704:Analysis of Variance; D017438:Bisphenol A-Glycidyl Methacrylate; D002516:Ceramics; D003188:Composite Resins; D019554:Dental Restoration Wear; D003799:Dental Stress Analysis; D006244:Hardness; D008422:Materials Testing; D008689:Methacrylates; D063225:Organically Modified Ceramics; D012821:Silanes; D012833:Siloxanes; D013499:Surface Properties
chemical_list: D003188:Composite Resins; C438835:Filtek P60 Composite Resin; D008689:Methacrylates; D063225:Organically Modified Ceramics; D012821:Silanes; D012833:Siloxanes; C469658:Solitaire 2 composite resin; C121818:Tetric ceram; C479084:admira; C479083:ariston AT; D017438:Bisphenol A-Glycidyl Methacrylate