The acid-base resistant zone in three dentin bonding systems

Inoue, Go; Nikaido, Toru; Foxton, Richard M.; Tagami, Junji

doi:10.4012/dmj.28.717

Cited by 30 publications

(46 citation statements)

References 12 publications

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“…However, a funnel-shaped lesion adjacent to the ABRZ was observed in SBS, which is similar to that found in previous studies 9,10,39) . The reason for the funnel-shaped lesion remains unclear, however, the pH value of SBU is approximately 2.7, mild self-etching may not allow the resin monomers to penetrate into demineralized dentin sufficiently, causing nano-spaces that remain beneath the ABRZ 35) . A thicker ABRZ was expected in the XTR group 11,37,40) , because XTR contains a fluoride-releasing component, sodium hexafluorosilicate, in the adhesive.…”

Section: Discussionmentioning

confidence: 99%

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Dentin bonding performance using Weibull statistics and evaluation of acid-base resistant zone formation of recently introduced adhesives

Guan

Takagaki

Matsui

et al. 2016

Dental Materials Journal

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Dentin bonding durability of recently introduced dental adhesives: Clearfil SE Bond 2 (SE2), Optibond XTR (XTR), and Scotchbond Universal (SBU) was investigated using Weibull analysis as well as analysis of the micromorphological features of the acid-base resistant zone (ABRZ) created for the adhesives. The bonding procedures of SBU were divided into three subgroups: self-etch (SBS), phosphoric acid (PA) etching on moist (SBM) or dry dentin (SBD). All groups were thermocycled for 0, 5,000 and 10,000 cycles followed by microtensile bond strength testing. Acid-base challenge was undertaken before SEM and TEM observations of the adhesive interface. The etch-and-rinse method with SBU (SBM and SBD) created inferior interfaces on the dentin surface which resulted in reduced bond durability. ABRZ formation was detected with the self-etch adhesive systems; SE2, XTR and SBS. In the PA etching protocols of SBM and SBD, a thick hybrid layer but no ABRZ was detected, which might affect dentin bond durability.

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Section: Discussionmentioning

confidence: 99%

“…Inoue et al 35) demonstrated that no ABRZ could be detected in etch-and-rinse adhesives when bonded to dentin. They believed this was due to the aggressiveness of PA that dissolves the dentin substrate and leaves no remnant apatite crystals at the frontier that can react with infiltrating monomers.…”

Section: Discussionmentioning

confidence: 99%

Dentin bonding performance using Weibull statistics and evaluation of acid-base resistant zone formation of recently introduced adhesives

Guan

Takagaki

Matsui

et al. 2016

Dental Materials Journal

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“…A funnel-shaped erosion area was observed specifically in the 4-META adhesive. Inoue et al 11) reported that the dentin surface adjacent to the ABRZ was more eroded than other areas of the dentin surface in a 4-META containing all-in-one adhesive (AQ Bond Plus, Sun Medical). They suggested that nanospaces caused by incomplete monomer penetration into the demineralized dentin should be present beneath the dentin ABRZ.…”

Section: Discussionmentioning

confidence: 99%

“…Sample preparation for SEM observation of dentin ABRZ was established by Inoue et al 7) and successfully applied in many studies afterwards [8][9][10][11][12][13]20) . However, considering the structural differences between dentin and enamel, it was necessary to seek optimal conditions for the acid-base challenge in order to observe enamel ABRZ.…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, this zone named as the "acid-base resistant zone" (ABRZ), was supposed to play an important role in prevention of secondary caries, sealing of restoration margins and promotion of restoration durability. In previous studies, the existence of the dentin ABRZ was confirmed with various self-etching adhesive systems [7][8][9][10][11][12][13] . Furthermore, the transmission electron microscopic (TEM) observation of the adhesive-dentin interface after acid-base challenge revealed that the ABRZ contained HAp crystals and possessed a dentin-like structure, more caries-resistant than normal dentin 9) .…”

Section: Introductionmentioning

confidence: 99%

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Effect of functional monomers in all-in-one adhesive systems on formation of enamel/dentin acid-base resistant zone

Nikaido

Ichikawa

et al. 2011

Dent. Mater. J.

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This study aimed at evaluating the effect of functional monomers in all-in-one adhesive systems on formation of acid-base resistant zone (ABRZ) in enamel and dentin. Experimental adhesive systems containing one of three functional monomers; MDP, 3D-SR and 4-META were applied to enamel or dentin surface and light-cured. A universal resin composite was then placed. The specimens were subjected to a demineralizing solution (pH 4.5) and 5% NaClO for acid-base challenge and then observed by SEM. The ABRZ was clearly observed in both enamel and dentin interfaces. However, enamel ABRZ was thinner than dentin ABRZ in all adhesives. Morphology of the ABRZ was different between enamel and dentin, and also among the adhesives. Funnel-shaped erosion was observed only in the enamel specimen with the 4-META adhesive. The formation of enamel/dentin ABRZ was confirmed in all adhesives, but the morphology was influenced by the functional monomers.

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Effect of self-etch adhesives on the internal adaptation of composite restoration: a CP-OCT Study

Bakhsh

Baeesa

et al. 2018

Odontology

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Despite improvements in dental adhesive materials, internal adaptation remains a challenge in bonded restorations. The aim of this study was to compare microgaps and internal floor adaptation between two different self-etch adhesives in class-V cavities using cross-polarization optical coherence tomography (CP-OCT). In this in vitro study, standardized round class-V cavities were prepared in 20 non-carious human upper central incisor teeth. They were randomly divided into two groups, TN and SE, with each group receiving a different dental adhesive. In TN group, the adhesive used was all-in-one Tetric N-Bond Self-Etch (TN; Ivoclar/Vivadent, Liechtenstein), while SE group was bonded with two-step self-etch Clearfil SE Bond 2 adhesive (SE; Kuraray Noritake Dental Inc, Japan). The prepared cavities were restored with flowable composite and then stored in distilled water for 24 h. Next, they were immersed in silver nitrate, followed by immersion in a photo-developing solution. Optical comparison was carried out by CP-OCT to assess microgaps and composite adaptation at the cavity floor. A Mann-Whitney test was applied to the data, which showed a statistically significant difference in composite adaptation among the two groups (p < 0.001) with the SE group showing superior adaptation. CP-OCT is a reliable tool for non-invasive imaging that gives an insight into composite performance. Better adaptation was found with the two-step self-adhesive for the composite used in this study.

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The acid-base resistant zone in three dentin bonding systems

Cited by 30 publications

References 12 publications

Dentin bonding performance using Weibull statistics and evaluation of acid-base resistant zone formation of recently introduced adhesives

Dentin bonding performance using Weibull statistics and evaluation of acid-base resistant zone formation of recently introduced adhesives

Effect of functional monomers in all-in-one adhesive systems on formation of enamel/dentin acid-base resistant zone

Effect of self-etch adhesives on the internal adaptation of composite restoration: a CP-OCT Study

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