Effects of Er:YAG Laser Irradiation on the Microtensile Bond Strength to Bleached Enamel

Leonetti, Eduardo dos Santos; Rodrigues, José Augusto; Reis, André Figueiredo; Navarro, Ricardo Scarparo; Aranha, Ana Cecília Corrêa; Cassoni, Alessandra

doi:10.1089/pho.2010.2813

Cited by 12 publications

(5 citation statements)

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“…After completion of μTBS testing, the failure mode was observed using a stereomicroscope (Olympus SZ61) at × 40 magnification and classified as cohesive failure in enamel, adhesive failure between the enamel-composite interface, or cohesive failure in the composite. [ 18 22 ]…”

Section: Methodsmentioning

confidence: 99%

Influence of bleaching regimen and time elapsed on microtensile bond strength of resin composite to enamel

et al. 2017

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Objectives:The aim of this study was to evaluate the effects of time elapsed since bleaching and different bleaching regimens on the microtensile bond strength of resin composite to enamel.Methodology:Forty flattened buccal enamel surfaces were divided into four groups: An unbleached (control) group and three bleaching groups. Control group specimens were not subjected to a bleaching regimen (Group 1), while those in the bleaching groups were bleached as follows: opalescence 10% (Group 2), whiteness perfect 16% (Group 3), and whiteness hydrogen peroxide 35% (Group 4). Thereafter, the bleached specimens were divided into three subgroups (n = 4 teeth each) for restoration according to predetermined posttreatment time intervals (immediately, 1 week, and 2 weeks). Bonded specimens were then sectioned and subjected to μTBS testing. The data were analyzed using Kruskal–Wallis and Mann–Whitney U-tests at α = 0.05.Results:There was a significant difference in the μTBS of the resin composite to enamel in groups that were bonded immediately after bleaching and in the control group (P < 0.05). Compared to the control group, the μTBS in Groups 2, 3, and 4 decreased significantly 1-week postbleaching (P < 0.05). No significant difference in μTBS was observed between the bleached and unbleached groups 2 weeks after treatment (P > 0.05).Conclusions:Adhesive restorative procedures could not be performed immediately or after 1 week irrespective of the type or concentration of bleaching system used. Composite restorations on bleached enamel surfaces should be performed after an interval of at least 2 weeks.

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Section: Methodsmentioning

confidence: 99%

Influence of bleaching regimen and time elapsed on microtensile bond strength of resin composite to enamel

et al. 2017

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“…[19] This contradictory results are probably due to the diversity of the parameters, methodologies, and adhesive systems utilized. [20] There is also some controversy concerning the need of additional acid etching application to tooth tissues irradiated by Er:YAG laser. [1014]…”

Section: Introductionmentioning

confidence: 99%

Shear bond strength and SEM morphology evaluation of different dental adhesives to enamel prepared with ER:YAG laser

et al. 2013

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Context:Early observations of enamel surfaces prepared by erbium lasers motivated clinicians to use laser as an alternative to chemical etching.Aims:Evaluate shear bond strength (SBS) values of different dental adhesives on Erbium:Yttrium Aluminum Garnet (Er:YAG) laser prepared enamel and to evaluate possible etching patterns correlations between dental adhesives and SBS values.Subjects and Methods:One hundred bovine incisors were randomly assigned to SBS tests on enamel (n = 15) and to enamel morphology analysis (n = 5) after Er:YAG laser preparation as follows: Group I – 37% phosphoric acid (PA)+ ExciTE®; Group II – ExciTE®; Group III – AdheSE® self-etching; Group IV – FuturaBond® no-rinse. NR; Group V – Xeno® V. Teeth were treated with the adhesive systems and subjected to thermal cycling. SBS were performed in a universal testing machine at 5 mm/min.Statistical Analysis Used:One-way ANOVA and post-hoc tests (P < 0.05). For the morphology evaluation, specimens were immersed in Ethylenediamine tetraacetic acid (EDTA) and the etching pattern analyzed under Scanning Electron Microscope (SEM).Results:Mean bond strengths were Group I – 47.17 ± 1.61 MPa (type I etching pattern); Group II – 32.56 ± 1.64 MPa, Group III – 29.10 ± 1.34 MPa, Group IV – 23.32 ± 1.53 MPa (type III etching pattern); Group V – 24.43 MPa ± 1.55 (type II etching pattern).Conclusions:Different adhesive systems yielded significantly different SBSs. Acid etching significantly increased the adhesion in laser treated enamel. No differences in SBS values were obtained between AdheSE® and ExciTE® without condition with PA. FuturaBond® NR and Xeno® V showed similar SBS, which was lower in comparison to the others adhesives. No correlation between enamel surface morphology and SBS values was observed, except when PA was used.

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“…The water molecules among the hydroxyapatite crystals absorb the beams and evaporate; as a result, the internal pressure increases and microexplosions occur leading to substrate ejection and microstructural alterations. 25,28,29 Although several studies have assessed the effects of erbium family lasers on bleached enamel, 3,[30][31][32] to the best of our knowledge no study has compared the effects of Er:YAG and Er,Cr:YSGG lasers on bleached dentin. Based on our results, Er:YAG laser irradiation led to significantly higher bond strength compared to the control group.…”

Section: Discussionmentioning

confidence: 99%

Effects of Erbium Family Laser on Shear Bond Strength of Composite to Dentin After Internal Bleaching

et al. 2017

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Introduction: The aim of this study was to assess the effect of surface treatment with erbium: yttrium-aluminum-garnet (Er:YAG) and erbium, chromium: yttrium-scandium-gallium-garnet (Er,Cr:YSGG) lasers on shear bond strength of composite resin to recently bleached dentin. Methods: In this study, 40 extracted human premolars were selected. The teeth were cut 4 mm apical to the cusp tip and were randomly divided into four groups (n = 10 in each group) for shear bond strength testing. For bleaching, 35% hydrogen peroxide (H 2 o 2 ) gel (Opalescence Endo, Ultradent, South Jordan, UT, USA) was applied to dentin surfaces of all specimens for 10 days. Before etching and bonding, in Er,Cr:YSGG and Er:YAG laser groups, dentin surfaces were irradiated with Er,Cr:YSGG and Er:YAG lasers, respectively. In Er,Cr:YSGG group, Er:YAG group and control group, composite restoration was performed immediately after bleaching while in common procedure group, composite restoration was performed after seven days. The teeth were then subjected to shear bond strength testing machine. The data were statistically analyzed using analysis of variance (ANOVA) and Tukey test. Results: The mean and standard deviation (SD) of shear bond strength was 4.3 ± 1.4 MPa for control group, 6.7 ± 2.0 Mpa for Er,Cr:YSGG group, 14.4 ± 3.7 Mpa for Er:YAG group and 19.4 ± 2.6 Mpa for common procedure group. Conclusion: The shear strength of composite to Er:YAG laser-treated bleached dentin was significantly higher than control group while significantly lower than common procedure.

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Effects of Er:YAG Laser Irradiation on the Microtensile Bond Strength to Bleached Enamel

Cited by 12 publications

References 28 publications

Influence of bleaching regimen and time elapsed on microtensile bond strength of resin composite to enamel

Influence of bleaching regimen and time elapsed on microtensile bond strength of resin composite to enamel

Shear bond strength and SEM morphology evaluation of different dental adhesives to enamel prepared with ER:YAG laser

Effects of Erbium Family Laser on Shear Bond Strength of Composite to Dentin After Internal Bleaching

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