A study on colour stability of self-etching and etch-and-rinse adhesives

Gaintantzopoulou, Marianna; Kakaboura, Afrodite; Loukidis, Michalis; Vougiouklakis, G

doi:10.1016/j.jdent.2009.01.010

Cited by 28 publications

(34 citation statements)

References 26 publications

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“…Water sorption and discoloration of the adhesive interface may affect the color appearance of the restoration. 32 This phenomenon is highly consistent with what evaluators found in the present study, as all the restorations with Adper Scotchbond SE þ Filtek Z250 that rated Bravo or Charlie for color match presented a variable saturation of pink. Some of these restorations already had slight pink marginal staining at the baseline evaluation (Figure 1).…”

Section: Discussionsupporting

confidence: 92%

“…Their inclusion in a HEMA-rich and still-colored adhesive interface would enhance their susceptibility to hydrolytic degradation and, consequently, marginal staining. 30,32 This mechanism was corroborated by the presence of the characteristic pink color of Liquid A in most of the stained margins around Adper Scotchbond SE þ Filtek Z250 restorations (Figure 1).…”

Section: Discussionmentioning

confidence: 71%

“…A recent study 32 has revealed high color instability after water immersion of a self-etch adhesive (OneUp Bond F, Tokuyama Dental Corporation, Tokyo, Japan), with a very similar color-change mechanism to that of Adper Scotchbond SE. Water sorption and discoloration of the adhesive interface may affect the color appearance of the restoration.…”

Section: Discussionmentioning

confidence: 99%

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Clinical Evaluation of a Low-shrinkage Composite in Posterior Restorations: One-Year Results

Baracco¹,

Perdigão²,

Cabrera³

et al. 2012

Operative Dentistry

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Filtek Silorane showed acceptable clinical performance after one year. However, the lowshrinkage resin combined with the self-etch adhesive did not provide any advantage over the methacrylate-based composite combined with the total-etch adhesive. SUMMARYObjectives: The aim of this study was to compare the one-year clinical performance of three restorative systems, which included a novel low-shrinkage composite and two bonding strategies.Materials and Methods: Twenty-five patients received three Class I (occlusal) or Class II restorations performed with one of three restorative systems: Filtek Silorane Restorative System (FS); Adper Scotchbond 1 XT, a twostep etch-and-rinse adhesive, with Filtek Z250 (XT); and Adper Scotchbond SE, a two-step self-etch adhesive, with Filtek Z250 (SE). All materials were applied following the manufacturer's instructions. Two independent observers evaluated the restorations at baseline, after six months, and after one year, according to the United States Public Health System modified criteria. The Kruskal-Wallis test and the Mann-Whitney U-test were computed to compare the behavior of the restorative systems; Friedman and Wilcoxon tests were used to analyze the intrasystem data (a=0.05).Results: All restorations were evaluated at one year. FS and XT performed statistically similarly at one year, but marginal staining for SE was statistically worse. Intrasystem comparisons between baseline and one year also showed deterioration of marginal staining for SE, while a deterioration of the marginal adaptation was recorded for both SE and FS. XT was the only system for which there was no

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 71%

Section: Discussionmentioning

confidence: 99%

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Clinical Evaluation of a Low-shrinkage Composite in Posterior Restorations: One-Year Results

Baracco¹,

Perdigão²,

Cabrera³

et al. 2012

Operative Dentistry

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“…It has long been recognized that heat leads to a partial degradation of cell-wall material that will have an effect on wood chemical composition and mechanical properties (Sanchez-Zapata et al 2011). Such changes in the wood chemical composition lead to veneer coloration changes (that can be monitored using 400 nm to 900 nm spectral data), and to NIR spectra changes (Meder et al 2002, Gaintantzopoulou et al 2009). PLS prediction models for CIE L*a*b* colour space variables were built using the reflectance data acquired in the 400 nm to 900 nm (Fig.…”

Section: Results and Discussion Moisture Content (Mc)mentioning

confidence: 99%

“…However, a significant CIE b* colour space parameter (R 2 = 0.10) was obtained in the range 400 nm to 900 nm, which confirmed that the surface inactivation due to high temperature exposure induces veneer coloration changes that can be monitored using 400 nm to 900 nm spectral data. Coloration changes are caused by chemistry changes related to the disruption of hydrogen bonding and structural damages produced by the heating treatment (Meder et al 2002, Gaintantzopoulou et al 2009). For personal use only.…”

Section: Results and Discussion Moisture Content (Mc)mentioning

confidence: 99%

Moisture and surface quality sensing of Douglas-fir (Pseudotsuga menziesii var. menziesii) veneer products

Koumbi-Mounanga

Ung

Groves

et al. 2013

The Forestry Chronicle

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The potential of near-infrared spectroscopy (NIRS) to estimate moisture content (MC) and surface inactivation parameters of Douglas-fir (Pseudotsuga menziesii var. menziesii) veneer products was assessed. The best prediction model for MC was produced for the lower range of MC (0%-50%) of Douglas-fir veneers. Exposure at 180°C produced surface colour changes and the CIE-L*a*b* colour parameters measuring colour changes were better estimated using the 400 nm to 900 nm spectral data than the 1100 nm to 2400 nm spectral data. Increased exposure time resulted in lower wettability and hence increasing contact angles, especially when ethylene glycol and formamide were used as solvents. NIRS-based predictions of contact angles were better when the angles were measured using formamide than when they were measured using ethylene glycol. Lap shear tensile strengths of bonds made with phenol formaldehyde (PF) resin decreased with exposure times. NIRS-based predictions of tensile strengths were also estimated and we found strong negative relationships between contact angle and tensile strength, whatever the probe solvent used (water, glycerol, ethylene glycol and formamide). It is apparent that NIRS can differentiate veneers samples that had undergone high temperature exposure, which resulted in lower wetting properties and somewhat lower adhesion bond strength.

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Five-year clinical performance of a silorane- vs a methacrylate-based composite combined with two different adhesive approaches

2015

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A study on colour stability of self-etching and etch-and-rinse adhesives

Cited by 28 publications

References 26 publications

Clinical Evaluation of a Low-shrinkage Composite in Posterior Restorations: One-Year Results

Clinical Evaluation of a Low-shrinkage Composite in Posterior Restorations: One-Year Results

Moisture and surface quality sensing of Douglas-fir (Pseudotsuga menziesii var. menziesii) veneer products

Five-year clinical performance of a silorane- vs a methacrylate-based composite combined with two different adhesive approaches

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