Effects of Er,Cr:YSGG Laser Irradiation in Human Enamel and Dentin: Ablation and Morphological Studies

Hossain, Mozammal; Nakamura, Yukio; Yamada, Yuya; Kimura, Yuichi; Matsumoto, Naoto; Matsumoto, Koukichi

doi:10.1089/clm.1999.17.155

Cited by 164 publications

(157 citation statements)

References 13 publications

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“…Such alterations have both macro-and micro-roughness. Laser-induced changes in the surface texture of enamel and dentin could potentially affect the microleakage of adhesive restorative materials 16) . Microleakage is the main causative factor for the high incidence of secondary caries in the cervical region and accounts for many failed restorations.…”

Section: Introductionmentioning

confidence: 99%

Effects of different types of adhesive systems on the microleakage of compomer restorations in Class V cavities prepared by Er,Cr:YSGG laser in primary teeth

2012

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The aim of this in vitro study was to evaluate the effects of different types of adhesive systems on the microleakage of compomer restorations in Class V cavities prepared by erbium, chromium: yttrium scandium gallium garnet (Er,Cr:YSGG) laser. There were five test groups according to the type of adhesive applied to the cavities: Adper Single Bond 2 (Group 1), Scotchbond Multi-Purpose Plus (Group 2), Xeno III (Group 3), Clearfil Protect Bond (Group 4), Prime&Bond NT (Group 5). Dye penetration was evaluated under a stereomicroscope, and data were statistically analyzed by Kruskal-Wallis and Wilcoxon Signed Ranks tests. Gingival margins showed significantly higher microleakage than occlusal margins in all the test groups (p<0.05). Groups 1 and 2 showed significantly less microleakage than Group 5 (p<0.05), and there were no statistically significant differences among Groups 3, 4, and 5 (p>0.05). None of the dentin bonding agents eliminated microleakage completely, and higher microleakage scores were observed along the gingival margin than the occlusal margin.

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Section: Introductionmentioning

confidence: 99%

Effects of different types of adhesive systems on the microleakage of compomer restorations in Class V cavities prepared by Er,Cr:YSGG laser in primary teeth

2012

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“…On the other hand, Er,Cr:YSGG laser used in the current study may have effects similar to those of Er:YAG laser since its wavelength (2.78 nm) is close to that of Er:YAG laser (2.94 nm). 36 The efficacy of Er,Cr:YSGG laser for surface treatment of dentin, 37,38 ceramics 38 and composite resin 39 has been previously evaluated. Kurtulmus-Yilmaz et al evaluated the effect of Er,Cr:YSGG laser on micropush-out bond strength of fiber post to resin core, and showed that laser irradiation in 1 W and 1.5 W powers enhanced the bond strength, but 2 W laser irradiation had no such effect.…”

Section: Discussionmentioning

confidence: 99%

Bond Strength of Fiber Posts to Composite Core: Effect of Surface Treatment With Er,Cr:YSGG Laser and Thermocycling

et al. 2017

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Introduction: This study aimed to determine the bond strength of fiber post to composite core following surface treatment with Er,Cr:YSGG laser at different powers and sandblasting with and without thermocycling. Methods: In this experimental study, 30 fiber posts (Glassix, Nordin, Switzerland) were randomly divided into 5 groups of sandblasting, no treatment and laser irradiation at 1, 1.5 and 2 W powers. Following composite filling and mounting, 1-mm thick sections were made for pushout bond strength testing. Half of the samples in each group were subjected to thermocycling (n=15). Two-way analysis of variance (ANOVA) was used to analyze the bond strength values. Pairwise comparisons were made using Tukey test (P < 0.05). Results: Effect of treatment method on push-out bond strength of fiber post to composite core was significant (P = 0.017), while thermocycling had no significant effect on bond strength (P = 0.964). Pairwise comparison of surface treatment methods revealed no significant difference in groups with and without thermocycling (P > 0.05), but Er,Cr:YSGG laser irradiation with 1 W power yielded significantly higher bond strength than the control group (P =0.01). Conclusion: Irradiation of Er,Cr:YSGG laser at 1 W power increased the bond strength of fiber post to composite core. Thermocycling slightly decreased the bond strength at the fiber postcore interface.

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“…(5,6) Studies by Hossain et al, have shown that in laser-irradiated dentin surfaces the orifices of the dentinal tubules are large and irregular, and no smear layer or thermal changes such as fusion and carbonization are visible. (7) In contrast, Yamazaki et al, reported that high-power laser irradiation led to fusion, carbonization and formation of big cracks on the root canal walls. (8) In addition to post type and cleaning of the root canal, the cement type affects also post retention.…”

Section: Introductionmentioning

confidence: 98%

Effect of Laser Treatment, Self-Adhesive Resin Cement Brand and Thermocycling on Push out Bond Strength of Fiber Reinforced Post

et al. 2016

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The interface between the adhesive resin and fiber posts has an important role in their performance. However, It was found that the most frequent cause of their failure is debonding at the adhesive resin-dentin interface. The aim of the present study was to evaluate the effect of laser treatment: Erbium, Diode or no treatment; and two brands of self-adhesive resin cement: hydrophobic (Smartcem2) and conventional (Breeze); in addition to the effect of thermocycling on push out bond strength of Glassix fiber-reinforced composite post. A total of ninety-six freshly extracted natural human teeth were equally divided into three main groups after root canal treatment, decoronatin and post space preparation. Teeth of group 1 were treated with Er,Cr:YSGG laser, group 2 were treated with Diode laser, while the teeth of group 3 [control] received no laser treatment. Posts in half of the speciemens of the three groups were cemented with hydrophobic resin cement (Smartcem2) and the rest were cemented with conventional resin cement (Breeze). Samples of each group were further subdivided into two subgroups according to whether they were thermocycled or not. Three slices of 3mm-thickness: cervical, middle and apical were prepared from each root. Then a push-out test was performed using universal testing machine at a strain rate of 0.5 mm/min. Data were analyzed using Unpaired t test. One-way analysis of variance (ANOVA) test was used to study the effect of different variables' interactions. This was followed by Tukey's post hoc test when a significant difference was detected. The significance level was set at p ≤ 0.05. The results revealed that the Er,Cr:YSGG -2790 nm laser afforded greater bond strength than the diode laser. The hydrophobic self-adhesive resin cement demonstrated higher bond strength than the other brand. In addition, thermal stresses induced by thermocycling reduced the bond strength of Glassix fiber post.

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Effects of Er,Cr:YSGG Laser Irradiation in Human Enamel and Dentin: Ablation and Morphological Studies

Abstract: These results suggest that during the Er,Cr:YSGG laser irradiation, water spray directed at the ablation sites increases the ablation depths and water plays an important role as an initiator of the ablation of dental hard tissues.

Cited by 164 publications

References 13 publications

Effects of different types of adhesive systems on the microleakage of compomer restorations in Class V cavities prepared by Er,Cr:YSGG laser in primary teeth

Effects of different types of adhesive systems on the microleakage of compomer restorations in Class V cavities prepared by Er,Cr:YSGG laser in primary teeth

Bond Strength of Fiber Posts to Composite Core: Effect of Surface Treatment With Er,Cr:YSGG Laser and Thermocycling

Effect of Laser Treatment, Self-Adhesive Resin Cement Brand and Thermocycling on Push out Bond Strength of Fiber Reinforced Post

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