The application of fluorinated aromatic dimethacrylates to experimental light-cured radiopaque composite resin, containing barium-borosilicate glass filler--a progress in nonwaterdegradable properties.
This study investigated the durability, especially the nonwaterdegradable qualities, of experimental light-cured composite resin containing barium-borosilicate glass filler. For this purpose, Bis-GMA, a typical component of base monomer in conventional composite resin, was replaced by Bis-GMA-F which is water-repellent. After over 20,000 thermal cycles, the composite resin containing Bis-GMA retained only 60 approximately 70% of its initial compressive, diametral tensile, flexural strength and flexural elastic modulus. However, the experimental composite resin containing Bis-GMA-F as a resin matrix showed no loss of compressive, diametral tensile strength or flexural elastic modulus, although flexural strength showed some deterioration. It was considered that the difference between Bis-GMA-F and Bis-GMA, as resin matrix, caused variation in the characteristics of water sorption.
Tanaka
J
J
Department of Operative Dentistry, Okayama University Dental School, Japan.
Inoue
K
K
Masamura
H
H
Matsumura
K
K
Nakai
H
H
Inoue
K
K
D017609:Barium Compounds / Q000138:chemical synthesis / Q000737:chemistry; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D003188:Composite Resins / Q000737:chemistry*; D003287:Contrast Media; D004548:Elasticity; D005466:Fluorocarbons / Q000737:chemistry; D006244:Hardness; D006868:Hydrolysis; D008422:Materials Testing; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D017640:Silicates / Q000737:chemistry; D013329:Structure-Activity Relationship; D013718:Tensile Strength; D013818:Thermogravimetry
D017609:Barium Compounds; D003188:Composite Resins; D003287:Contrast Media; D005466:Fluorocarbons; D011109:Polymethacrylic Acids; D017640:Silicates; C020946:triethylene glycol dimethacrylate; C012766:barium hydroxide; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate