Oxygen inhibition in dental resins

被引:134
作者
Gauthier, MA
Stangel, I
Ellis, TH
Zhu, XX
机构
[1] Univ Montreal, Dept Chem, Montreal, PQ H3C 3J7, Canada
[2] BioMat Sci, Rockville, MD 20850 USA
关键词
oxygen inhibition; confocal Raman spectroscopy; visible-light cure; filler content; viscosity;
D O I
10.1177/154405910508400808
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
Oxygen inhibits free radical polymerization and yields polymers with uncured surfaces. This is a concern when thin layers of resin are being polymerized, or in circumstances where conventional means of eliminating inhibition are inappropriate. In this study, we tested the hypothesis that viscosity, filler content, and polymerization temperature modify oxygen diffusion in the resin or the reactivity of radical species, and affect the degree of conversion near the surface. Confocal Raman micro-spectroscopy was used to measure monomer conversion from the surface to the bulk of cured resins. Increased viscosity was shown to limit oxygen diffusion and increase conversion near the surface, without necessarily modifying the depth of inhibition. The filler material was shown to increase, simultaneously, oxygen diffusivity and the viscosity of the resin, which have opposite effects on conversion. Polymerization at a temperature above similar to 110 degrees C was shown to eliminate oxygen inhibition.
引用
收藏
页码:725 / 729
页数:5
相关论文
共 31 条
[1]   The role of oxygen in camphorquinone-initiated photopolymerization [J].
Andrzejewska, E ;
Linden, LA ;
Rabek, JF .
MACROMOLECULAR CHEMISTRY AND PHYSICS, 1998, 199 (03) :441-449
[2]   ANALYSIS OF PROCESSES IN LATEX SYSTEMS BY FOURIER-TRANSFORM RAMAN-SPECTROSCOPY [J].
CLAYBOURN, M ;
MASSEY, T ;
HIGHCOCK, J ;
GOGNA, D .
JOURNAL OF RAMAN SPECTROSCOPY, 1994, 25 (01) :123-129
[3]   MICROWAVE POLYMERIZATION OF ACRYLIC RESINS USED IN DENTAL PROSTHESES [J].
DECLERCK, JP .
JOURNAL OF PROSTHETIC DENTISTRY, 1987, 57 (05) :650-658
[4]   Confocal Raman microscopy: Why the depth resolution and spatial accuracy can be much worse than you think [J].
Everall, NJ .
APPLIED SPECTROSCOPY, 2000, 54 (10) :1515-1520
[5]   Modeling and measuring the effect of refraction on the depth resolution of confocal Raman microscopy [J].
Everall, NJ .
APPLIED SPECTROSCOPY, 2000, 54 (06) :773-782
[6]   Monomers with low oxygen inhibition as enamel dentin adhesives [J].
Finger, WJ ;
Lee, KS ;
Podszun, W .
DENTAL MATERIALS, 1996, 12 (04) :256-261
[7]   Depth profiling of polg(methyl methacrylate), poly(vinyl alcohol) laminates by confocal Raman microspectroscopy [J].
Hajatdoost, S ;
Yarwood, J .
APPLIED SPECTROSCOPY, 1996, 50 (05) :558-564
[8]   The effect of filler and silane content on conversion of resin-based composite [J].
Halvorson, RH ;
Erickson, RL ;
Davidson, CL .
DENTAL MATERIALS, 2003, 19 (04) :327-333
[9]   DISTRIBUTIONS OF FLUORESCENCE LIFETIMES - CONSEQUENCES FOR THE PHOTOPHYSICS OF MOLECULES ADSORBED ON SURFACES [J].
JAMES, DR ;
LIU, YS ;
DEMAYO, P ;
WARE, WR .
CHEMICAL PHYSICS LETTERS, 1985, 120 (4-5) :460-465
[10]   On the heterogeneous structure of thermally cured bis-GMA/TEGDMA resins [J].
Jancar, J ;
Wang, W ;
Dibenedetto, AT .
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE, 2000, 11 (11) :675-682