Effects of surface properties on bond strength between layers of newly cured dental composites.
The shear strength was measured of a polymerizing increment to a newly cured composite increment of the same material with various surface properties. The results showed that the materials with the original surface which had been cured against a cover glass resulted in a significantly higher bond strength than any of the other preparations. It was concluded that the unreacted double bonds (due to the oxygen inhibition) functioned as a bonding medium between two increments of dental composites. The process which impaired the original cured surface decreased the bonding between increments.
Li
J
J
Center for Oral Biology at Novum, Karolinska Institute, Huddinge, Sweden.
D000096:Acetone / Q000737:chemistry; D000180:Acrylic Resins / Q000737:chemistry; D000704:Analysis of Variance; D017438:Bisphenol A-Glycidyl Methacrylate / Q000737:chemistry; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003188:Composite Resins / Q000737:chemistry*; D001840:Dental Bonding; D003775:Dental Polishing; D005898:Glass; D008422:Materials Testing; D010100:Oxygen / Q000737:chemistry; D011092:Polyethylene Glycols / Q000737:chemistry; D011109:Polymethacrylic Acids / Q000737:chemistry; D011140:Polyurethanes / Q000737:chemistry; D019279:Resin Cements / Q000737:chemistry; D012821:Silanes / Q000737:chemistry; D012822:Silicon Dioxide; D013314:Stress, Mechanical; D013499:Surface Properties; D015040:Zirconium
D000180:Acrylic Resins; C029012:Composite Dental Resin; D003188:Composite Resins; C079764:Pertac hybrid; D011109:Polymethacrylic Acids; D011140:Polyurethanes; D019279:Resin Cements; D012821:Silanes; C083568:Z100 composite resin; C065770:Herculite XR; D000096:Acetone; C020946:triethylene glycol dimethacrylate; C036885:prisma-fil; D011092:Polyethylene Glycols; D017438:Bisphenol A-Glycidyl Methacrylate; D012822:Silicon Dioxide; C046503:formula F 70; D015040:Zirconium; D010100:Oxygen