Light activated resin containing organic dyestuff.
The physical properties of experimental visible light-activated resins containing dyestuff, which could be quickly discolored by irradiation was, evaluated by analyzing light absorbance characteristics and measuring micro Vickers hardness. The experimental resin, which was prepared by mixing equivalent weights of Bis GMA and triethyleneglycol-dimethacrylate, was colored by one of three organic dye stuffs, and camphorquinone and dimethyl-p-toluidine were added to activate polymerization. In the tested materials, the experimental resins containing Methylene blue and Nile blue A were discolored quickly after the start of irradiation, and this was considered to be useful for dental practice because an overfilled margin could be easily identified. The Vickers hardness number of the base resin decreased slightly by a level of 6% by adding the dyestuff.
Nakazato
J
J
Itoh
K
K
Wakumoto
S
S
D017438:Bisphenol A-Glycidyl Methacrylate; D004396:Coloring Agents; D003188:Composite Resins; D003731:Dental Caries / Q000209:etiology / Q000517:prevention & control; D003793:Dental Restoration, Permanent / Q000009:adverse effects; D006244:Hardness; D006801:Humans; D008027:Light; D008689:Methacrylates; D008751:Methylene Blue; D010078:Oxazines; D011092:Polyethylene Glycols; D011109:Polymethacrylic Acids
D004396:Coloring Agents; D003188:Composite Resins; D008689:Methacrylates; D010078:Oxazines; D011109:Polymethacrylic Acids; C020946:triethylene glycol dimethacrylate; C008619:Nile Blue; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate; D008751:Methylene Blue