Publication:
The influence of the modification of etched bovine dentin on bond strengths

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Issued Date

2000

Resource Type

Article

File Type

application/pdf

ISSN

1095641

DOI

10.1016/S0109-5641(00)00015-4

Other identifier(s)

2-s2.0-0034230980

Rights Holder(s)

มหาวิทยาลัยศรีนครินทรวิโรฒ

Bibliographic Citation

Dental Materials. Vol 16, No.4 (2000), p.255-265

Suggested Citation

Phrukkanon S., Burrow M.F., Hartley P.G., Tyas M.J. The influence of the modification of etched bovine dentin on bond strengths. Dental Materials. Vol 16, No.4 (2000), p.255-265. doi:10.1016/S0109-5641(00)00015-4 Retrieved from: https://hdl.handle.net/20.500.14740/7065

Title

The influence of the modification of etched bovine dentin on bond strengths

Author(s)

Phrukkanon S.
 Burrow M.F.
 Hartley P.G.
 Tyas M.J.

Abstract

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.

Subject(s)

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

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URI

https://hdl.handle.net/20.500.14740/7065

Collections

Scopus: Year 1983-2021

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