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N Nakabayashi

Bio: N Nakabayashi is an academic researcher. The author has contributed to research in topics: Dental bonding & Dentin. The author has an hindex of 1, co-authored 1 publications receiving 22 citations.

Papers
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Journal Article
TL;DR: Phenyl-P was the best adhesion promoting monomer among those studied monomers, which could not polymerize well enough to give good bond strength and could not make a stable resin reinforced dentin.
Abstract: Effect of adhesion promoting monomers dissolved in photocurable bonding agents on adhesion to ground dentin was investigated. They were MDP, Phosmer-M and 4-MET. The effect of those monomers was compared with that of Phenyl-P. The bonding agents contained campherquinone (CQ) as a photosensitizer, N-phenylglycine (NPG) as a reducing agent and TEGDMA as a base monomer. Phenyl-P was the best adhesion promoting monomer among those studied monomers. MDP could not polymerize well enough to give good bond strength. Phosmer-M could permeate through the smeared layer but could not make a stable resin reinforced dentin. 4-MET did not permeate through the smeared layer and did not adhere to ground dentin.

22 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, the authors examined the aggressiveness of three self-etching adhesive systems in penetrating dentin smear layers of different thickness using transmission electron microscopy (TEM).

693 citations

Journal ArticleDOI
TL;DR: Examination of both sides of the failed bonds revealed a wide variation in fracture patterns that involved all of these structures, suggesting that resin bonds to sclerotic dentine are probably high enough to permit retention of class V restorations by adhesion, without additional retention.

209 citations

Journal ArticleDOI
TL;DR: It is hypothesized that the degree of acidic monomer conversion at the interface and within the tubules was high enough that the acidic reaction would be very self-limiting and, thus, continue to affect/demineralize the surrounding dentin.
Abstract: Self-etch adhesives that etch and prime simultaneously are becoming more acidic. We hypothesized that the degree of acidic monomer conversion at the interface and within the tubules was high enough that the acidic reaction would be very self-limiting. Dentin surfaces prepared from extracted, unerupted human third molars were treated with Prompt L-Pop (3M ESPE). The prepared teeth were stored in normal saline, and specimens retrieved at intervals < or = 4 wks were randomly selected for light, scanning electron microscopic and micro-Raman spectroscopic analysis. Morphologic and spectroscopic analyses indicated dentin demineralization and adhesive penetration throughout the demineralized layer and tubules. Increased dentin demineralization and loss of adhesive integrity were noted after aqueous storage. The degree of monomer conversion at the interface was consistently greater than conversion within the tubules. Fluid within the tubules may inhibit monomer conversion. The acidic characteristics of this adhesive may be retained and, thus, continue to affect/demineralize the surrounding dentin.

191 citations

Journal ArticleDOI
TL;DR: Removal of the surface layers of sclerotic dentin and/or conditioning with stronger acids may be beneficial to obtain stronger bonding to sclerotics dentin.

129 citations

Journal ArticleDOI
TL;DR: It was shown that the difference in aggressiveness of these three contemporary self-etching systems produced different thickness of hybrid layer, and Raman results showed that Prompt L-Pop is the most aggressive systems in this study.

80 citations