title: Color stability of acrylic resin adhesives with different initiation modes.
abstract: The purpose of this study was to evaluate the color stability of two acrylic resin adhesives with different activation systems: a benzoyl peroxide (BPO)-amine redox system and a tri-n-butylborane (TBB) derivative system. The colorimetric values of the two resins in different shades (Clear and Ivory) were determined (n=5) 24 hours after polymerization as a baseline using the L*a*b* system of the Commission Internationale de l'Eclairage (CIE). The specimens were thereafter immersed in distilled water, and the color difference (deltaE*) values were calculated. After 24 weeks, the TBB-initiated material showed a significantly (p<0.05) lower color change than the BPO-amine-initiated material. The deltaE* values for the BPO-amine-initiated materials were 6.9 for Clear and 15.8 for Ivory, whereas those for the TBB-initiated materials were 1.3 and 1.8 respectively. Thus, it was concluded that the TBB-initiated material had superior color stability to that of the BPO-amine-initiated material.
authors.affiliation: Department of Specialized Dentistry, Nagasaki University Hospital of Medicine and Dentistry, Japan. t-naomi@net.nagasaki-u.ac.jp
authors.forename: Naomi
authors.initials: N
authors.lastname: Tanoue
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Koishi
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Yanagida
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Atsuta
authors.forename: Kazuki
authors.initials: K
authors.lastname: Shimada
authors.forename: Hideo
authors.initials: H
authors.lastname: Matsumura
mesh_terms: D000180:Acrylic Resins / Q000737:chemistry*; D000588:Amines / Q000737:chemistry; D000704:Analysis of Variance; D001896:Boron Compounds / Q000737:chemistry; D003116:Color; D003124:Colorimetry; D008422:Materials Testing; D008689:Methacrylates / Q000737:chemistry; D008768:Methylmethacrylates / Q000737:chemistry; D010084:Oxidation-Reduction; D044367:Phase Transition; D010860:Pigments, Biological; D017797:Prosthesis Coloring; D019279:Resin Cements / Q000737:chemistry*; D013674:Technology, Dental / Q000379:methods
chemical_list: D000180:Acrylic Resins; D000588:Amines; D001896:Boron Compounds; D008689:Methacrylates; D008768:Methylmethacrylates; C482145:Multibond; D010860:Pigments, Biological; D019279:Resin Cements; C009523:tri-n-butylborane; C049495:Super-bond