Evaluation on wear resistance of six composite resins and influencing factors in vitro

VernacularTitle:6种复合树脂耐磨性能和影响因素的体外评价
Author: Jie JIN ; Haihuan GONG ; Min YAN ; Ping GAO ; Qianqian WEI ; Yang ZHANG ; Song ZHU
Keywords: low-shrinkage composite resin; friction coefficient; maximum wear depth; wear resistance
From: Journal of Jilin University(Medicine Edition) 2017;43(2):328-333
CountryChina
Language:Chinese
Abstract: Objective:To investigate the wear resistance of four low-shrinkage commercial composite resins and two traditional composite resins in vitro and discuss the relative influencing factors, and to illustrate the inner relationship of the wear resistance of resins and material composition.Methods:Four low-shrinkage commercial composite resins including CLEARFIL MAJESTY Posterior(CMP), Filtek LS(LS), Admira(AD), Kalore(KA) and two traditional composite resins including Filtek Z350XT (Z350), Solitaire2(S2) were chosen.The bar-shaped specimens were fabricated and mounted in a UMT-2 wear testing machine and abraded with the two-body media (distilled water) with a Si3N4 ball as antagonist.The maximum wear depth was determined after 14 400 cycles.The friction coefficient was determined during the test.The worn surfaces were examined with SEM.Results:CMP showed the lowest maximum wear depth and KA presented the highest maximum wear depth.The maximum wear depth ranked as follows: CMP