Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/15300
ชื่อเรื่อง: The influence of the modification of etched bovine dentin on bond strengths
ผู้แต่ง: Phrukkanon S.
Burrow M.F.
Hartley P.G.
Tyas M.J.
Keywords: bisphenol A bis(2 hydroxypropyl) ether dimethacrylate
collagenase
hypochlorite sodium
phosphoric acid
resin
silicon dioxide
single bond
solvent
Z100 composite resin
zirconium
adhesion
animal
article
atomic force microscopy
cattle
chemistry
confidence interval
dental acid etching
dental bonding
dentin
drug effect
materials testing
mechanical stress
methodology
nonparametric test
regression analysis
scanning electron microscopy
surface property
tensile strength
time
ultrastructure
Acid Etching, Dental
Adhesiveness
Animals
Bisphenol A-Glycidyl Methacrylate
Cattle
Collagenases
Composite Resins
Confidence Intervals
Dental Bonding
Dentin
Materials Testing
Microscopy, Atomic Force
Microscopy, Electron, Scanning
Phosphoric Acids
Regression Analysis
Silicon Dioxide
Sodium Hypochlorite
Solvents
Statistics, Nonparametric
Stress, Mechanical
Surface Properties
Tensile Strength
Time Factors
Zirconium
วันที่เผยแพร่: 2000
บทคัดย่อ: Objective: The aim of this study was to modify demineralized bovine dentin surfaces by application of either 12.5% sodium hypochlorite (NaOCl), or 0.1% (w/w) Type I collagenase, after conditioning with phosphoric acid, to observe the demineralized surface and to investigate the effect on tensile bond strength. Methods: The NaOCl was applied to etched dentin for 30 s, 1 or 2 min and the collagenase for 1, 3 or 6 h. A control group was used without NaOCl or collagenase treatment. Prior to bonding, treated surfaces were examined using an Atomic Force Microscope (AFM). A 2.3 mm diameter area of dentin was conditioned, treated and bonded with either One Coat Bond or Single Bond following each manufacturer's instructions, and a resin composite rod attached. Bonds were stressed in tension at a rate of 1 mm/min until failure. Mean bond strengths were calculated (MPa) and mode of failure was determined by observation at 20 × magnification. Results were analyzed using multiple regression analysis and LSD test at the 95% level of confidence (n = 12). Results: AFM results showed progressive changes of the surface collagen as the treatment time of NaOCl or collagenase increased. For both bonding systems, the bond strengths of 1 min NaOCl and 3 h collagenase treatments were significantly higher than the control or other treatment groups (p < 0.05). Bond failure consisted of mostly adhesive failure between dentin and resin combined with small regions exhibiting cohesive failure of resin. Significance: Bond strengths were not dependent on the thickness of the hybrid layer, but rather quality of the hybrid layer. © 2000 Academy of Dental Materials. Published by Elsevier Science Ltd. All rights reserved.
URI: https://ir.swu.ac.th/jspui/handle/123456789/15300
https://www.scopus.com/inward/record.uri?eid=2-s2.0-0034230980&doi=10.1016%2fS0109-5641%2800%2900015-4&partnerID=40&md5=6c2e003c8be42a8a2cec68dc4c561d7a
ISSN: 1095641
Appears in Collections:Scopus 1983-2021

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