The influence of mixing ratio on the working time, strength and wear of composites.
The influence of varying the paste-to-paste ratio of chemically initiated composites on the working time, diametral tensile strength and in vitro 'occlusal' wear was investigated. If the mixing ratio was varied, the working time was not equally affected for the various brands. This is explained by different relative inhibitor concentrations in the pastes. Within reasonable deviations from the 1:1 ratio, no significant influence on the diametral tensile strength occurred. Wear properties as determined by a simulated occlusal wear test on three posterior composites, was more sensitive to the mixing ratio.
de Gee
A J
AJ
ten Harkel
H C
HC
Davidson
C L
CL
D000180:Acrylic Resins; D017438:Bisphenol A-Glycidyl Methacrylate; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003188:Composite Resins; D003738:Dental Cements; D003799:Dental Stress Analysis; D006801:Humans; D008422:Materials Testing; D011109:Polymethacrylic Acids; D019279:Resin Cements; D013499:Surface Properties; D013718:Tensile Strength
D000180:Acrylic Resins; C029849:Clearfil Bonding Agent; D003188:Composite Resins; D003738:Dental Cements; D011109:Polymethacrylic Acids; D019279:Resin Cements; D017438:Bisphenol A-Glycidyl Methacrylate; C033930:Silar (3M); C035190:miradapt