title: A predictive model for the polymerization of photo-activated resin composites.
abstract: This study investigated the relative significance of irradiation duration (20, 40, 60, or 80 seconds) and intensity; filler type (Silux Plus, a microfill or P-50, a hybrid); and shade (Universal or Gray) on the polymerization of resin composite within the depth of a simulated photopolymerized restoration. From the data, a mathematical model that predicts the extent of resin polymerization based upon the above stated variables was generated. The monomer conversion of specimens was determined by infrared spectroscopy. The results are of great clinical use and indicate that the most significant factor influencing resin composite polymerization is thickness of overlying resin composite. Both duration of exposure and light intensity demonstrate high and equal impact. Color and filler type have only minimal influence. The predictive model for resin composite polymerization provided a very good fit (r2 = .949).
authors.affiliation: Department of Oral Rehabilitation, School of Dentistry, Medical College of Georgia, Augusta 30912-1264.
authors.forename: F A
authors.initials: FA
authors.lastname: Rueggeberg
authors.forename: W F
authors.initials: WF
authors.lastname: Caughman
authors.forename: J W
authors.initials: JW
authors.lastname: Curtis
authors.forename: H C
authors.initials: HC
authors.lastname: Davis
mesh_terms: D000704:Analysis of Variance; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry*; D003188:Composite Resins / Q000737:chemistry*; D005544:Forecasting; D008027:Light; D016014:Linear Models; D008422:Materials Testing; D008956:Models, Chemical; D010316:Particle Size; D011092:Polyethylene Glycols / Q000737:chemistry*; D011109:Polymethacrylic Acids / Q000737:chemistry*; D012044:Regression Analysis; D013055:Spectrophotometry, Infrared; D013997:Time Factors
chemical_list: D003188:Composite Resins; D011109:Polymethacrylic Acids; C065771:P50 composite resin; C074741:Silux Plus; C020946:triethylene glycol dimethacrylate; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate