Effect of light‐cure time of adhesive resin on the thickness of the oxygen‐inhibited layer and the microtensile bond strength to dentin

Kim, Jongsoon; Choi, YoungRok; Cho, Byeong-Hoon; Son, Ho-Hyun; Lee, In-Bog; Um, Chung-Moon; Kim, Chang-Keun

doi:10.1002/jbm.b.30463

Cited by 51 publications

(41 citation statements)

References 40 publications

(134 reference statements)

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“…This fact might be due to its composition of nanosilica and nanoagglomerated zirconia fillers. The fluorescence of restorative materials has been reported to be nonstable with aging 19 ; thus, bleaching therapies might speed the aging process of restorative materials, and this may explain the observed results. Fluorescence has been shown to be dependent on the type of tested materials and, consequently, on their composition.…”

Section: Discussionmentioning

confidence: 86%

Influence of Hydrogen Peroxide Bleaching Gels on Color, Opacity, and Fluorescence of Composite Resins

Torres¹,

Ribeiro²,

Bresciani

et al. 2012

Operative Dentistry

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Bleaching therapies with 20% or 35% hydrogen peroxide gels influenced composite resin color and fluorescence. No influence on opacity was observed. SUMMARYThe aim of the present study was to evaluate the effect of 20% and 35% hydrogen peroxide bleaching gels on the color, opacity, and fluorescence of composite resins. Seven composite resin brands were tested and 30 specimens, 3-mm in diameter and 2-mm thick, of each material were fabricated, for a total of 210 specimens. The specimens of each tested material were divided into three subgroups (n=10) according to the bleaching therapy tested: 20% hydrogen peroxide gel, 35% hydroxide peroxide gel, and the control group. The baseline color, opacity, and fluorescence were assessed by spectrophotometry. Four 30-minute bleaching gel applications, two hours in total, were performed. The control group did not receive bleaching treatment and was stored in deionized water. Final assessments were performed, and data were analyzed by two-way analysis of variance and Tukey tests (p,0.05). Color changes were significant for different tested bleaching therapies (p,0.0001), with the greatest color change observed for 35% hydrogen peroxide gel. No difference in opacity was detected for all analyzed parameters. Fluorescence changes were influenced by composite resin brand (p,0.0001) and bleaching therapy (p=0.0016) used. No significant differences in fluorescence between different bleaching gel concentrations were detected by Tukey test. The

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Section: Discussionmentioning

confidence: 86%

Influence of Hydrogen Peroxide Bleaching Gels on Color, Opacity, and Fluorescence of Composite Resins

Torres¹,

Ribeiro²,

Bresciani

et al. 2012

Operative Dentistry

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“…Some previous studies suggested a positive correlation between the presence of an oxygen-inhibited layer and composite bonding 7,8) , whereas others reported no significant differences 9,10) or even a negative correlation 11) . The presence of an adequately thick oxygen-inhibited layer was reported to be necessary for the bonding of resin composites to adhesive resins 12) . Although excessive light irradiation of the adhesives tended to increase the degree of conversion, it decreased the thickness of the oxygeninhibited layer, leading to lower bond strength to tooth substrates.…”

Section: Introductionmentioning

confidence: 99%

Influence of oxygen inhibition on the surface free energy and enamel bond strength of self-etch adhesives

et al. 2012

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We compared the surface free energies and enamel bond strengths of single-step self-etch adhesives with and without an oxygeninhibited layer. The adhesives were applied to the enamel surfaces of bovine incisors, light irradiated, and the oxygen-inhibited layer was either retained or removed with ethanol. The surface free energies and their components (γS LW , γS + , and γS − ) were determined by measuring the contact angles of three test liquids placed on the cured adhesives. The enamel bond strengths of specimens with and without the oxygen-inhibited layer were measured. For all surfaces, the value of the estimated surface tension component γS LW was relatively constant. The value of the γS + component increased slightly when the oxygen-inhibited layer was removed, whereas that of the γS − component decreased significantly. The enamel bond strengths of the self-etch adhesives were significantly lower in the specimens without an oxygen-inhibited layer. The oxygen-inhibited layer therefore appeared to promote higher enamel bond strength.

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“…Moreover, the depth of curing and degree of conversion were statistically lower in the low-shrinkage (silorane) composites than in the conventional (methacrylate) composites (Kusgoz et al, 2011). Thus, as the polymerization of the subsurface is related to adhesive bonding strength (Kim et al, 2006), lower values can be expected with low-shrinkage resins (Guiraldo et al).…”

Section: Discussionmentioning

confidence: 99%

Influence of Tooth Bleaching on the Bonding Strength of Silorane-Based Restorative System

Monteiro

Carneiro

Nogueira

et al. 2015

Int. J. Odontostomat.

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Bleaching procedures can interfere on adhesive bonding of methacrylate-based restorative materials. After introduction of silorane-based composites, little information is available about this interaction. The objective is evaluate the influence of bleaching on enamel shear bond strength of silorane-based restorative system. Forty sound incisive bovine teeth were randomly divided into 04 groups (n= 10), being: G1 (control) -not bleached + Clearfil SE Bond (CSEB)/Filtek Z250 (Z250), G2 (control) -not bleached + Silorane Adhesive (SA)/Filtek P90 (P90), G3 -bleached + CSEB/Z250; G4 -bleached + SA/P90. The teeth were sectioned, had crowns included in a PVC rings, and the enamel surfaces gridded and polished with silicon carbide abrasive papers. G1 and G2 were stored in artificial saliva (37 ºC), daily renewed, for a period of 04 days. G3 and G4 were exposed to 02 sessions of 38% hydrogen peroxide (38HP), with 03 applications of 15 min in each session. Composite resin cylinders were built up on the enamel surfaces. Bonding procedures were performed according the manufacturer's instructions. After storage in distilled water for 24 h (37 ºC), the samples were submitted to shear bond test. Data were analyzed by two-way ANOVA and t (LSD) tests (5%). Intra group comparison showed significant difference for Z250 after bleaching, but not for P90. Shear strength was significant lower for P90, despite bleaching procedures. In conclusion, 38HP bleaching had no influence on the enamel bond strength of P90, even though presenting lower bond strength than Z250.

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Effect of light‐cure time of adhesive resin on the thickness of the oxygen‐inhibited layer and the microtensile bond strength to dentin

Cited by 51 publications

References 40 publications

Influence of Hydrogen Peroxide Bleaching Gels on Color, Opacity, and Fluorescence of Composite Resins

Influence of Hydrogen Peroxide Bleaching Gels on Color, Opacity, and Fluorescence of Composite Resins

Influence of oxygen inhibition on the surface free energy and enamel bond strength of self-etch adhesives

Influence of Tooth Bleaching on the Bonding Strength of Silorane-Based Restorative System

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