Bond Strength of Adhesive Systems to Er,Cr:YSGG Laser-Irradiated Dentin

Carvalho, Adriana Oliveira; Reis, André Figueiredo; Oliveira, Marcelo Tavares de; Freitas, Patrícia Moreira de; Aranha, Ana Cecília Corrêa; Eduardo, Carlos; Giannini, Marcelo

doi:10.1089/pho.2010.2983

Cited by 28 publications

(16 citation statements)

References 36 publications

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“…One unfavorable feature of the dental hard tissue lasers is the potential for thermo‐mechanical damage to the surface and subsurface of dental hard tissue dentin during laser irradiation (Ayar, ). In previous studies, it was reported that Er,Cr:YSGG laser irradiation yielded significantly lower dentin bond strength when compared to conventional means, even though the laser was used according to the parameters suggested by the manufacturers (Adebayo et al, ; Cardoso et al, ; Carvalho et al, ). However, it was reported that erbium laser irradiation might reduce nano‐hardness of dentin (Aizawa et al, ).…”

Section: Introductionmentioning

confidence: 99%

Effects of Er,Cr:YSGG laser parameters on dentin bond strength and interface morphology

Ayar

Yildirim

Yeşilyurt

2015

Microscopy Res & Technique

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Previous studies have shown the effects of Er,Cr:YSGG laser irradiation on the dentin bond strength; but there are few reports that show the significance of the irradiation with different laser parameters on dentin bond strength and interface morphology. This in-vitro study attempted to evaluate the microtensile bond strength (μTBS) and interface morphology of resin-dentin interfaces, either followed by treatment with Er,Cr:YSGG laser irradiation with different parameters or not. The flattened dentin samples of 35 bovine teeth were embedded into acrylic blocks and randomly divided into seven groups according to surface treatments using Er,Cr:YSGG lasers with different parameters: 3 W/20 Hz, 3 W/35 Hz, 3 W/50 Hz, 1.5 W/20 Hz, 1.5 W/35 Hz, 1.5 W/50 Hz, or no laser treatment (n = 5). Composite buildups were done over bonded surfaces and stored in water (24 hours at 37°C). Specimens were sectioned into sticks that were subjected to μTBS testing and observed under FE-SEM. Control groups (27.70 ± 7.0) showed statistically higher values than laser-irradiated groups. There were no significant differences among laser groups. Despite that, increasing the pulse frequency yielded slightly higher bond strength. Depending on laser settings, Er,Cr:YSGG laser irradiation caused interfacial gaps and resin tags with wings morphology. With the parameters used in this study, Er,Cr:YSGG laser irradiation promoted morphological changes within resin-dentin interfaces and negatively influenced the bond strength of adhesive systems.

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Section: Introductionmentioning

confidence: 99%

Effects of Er,Cr:YSGG laser parameters on dentin bond strength and interface morphology

Ayar

Yildirim

Yeşilyurt

2015

Microscopy Res & Technique

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“…For an Er,Cr:YSGG laser, reduced bond strength was reported by Carvalho et al. . For further details, the reader is referred to well‐written reviews and studies in laser journals or journals for operative dentistry. It can be concluded that dentin treatment by endodontic irrigation has a major impact on the adhesion and bond strength of obturation materials and adhesively inserted posts.…”

Section: Factors Affecting Bond Strengthmentioning

confidence: 83%

“…Irradiation with a 980-nm diode laser at different powers increased the bond strength of AH Plus but not of Epiphany to root dentin (71). For an Er,Cr:YSGG laser, reduced bond strength was reported by Carvalho et al (173). For further details, the reader is referred to well-written reviews and studies in laser journals or journals for operative dentistry.…”

Section: Factors Affecting Bond Strengthmentioning

confidence: 85%

Effects of mechanical instrumentation and chemical irrigation on the root canal dentin and surrounding tissues

Hülsmann¹

2013

Endodontic Topics

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Preparation and disinfection of the root canal aims to remove organic and inorganic tissue from within the root canal, reduce the number of microorganisms, neutralize endotoxins inside the dentin, and prepare the root canal for proper obturation. These aims can be achieved in many cases to a degree that promises a high chance of success through a combination of mechanical preparation and chemical disinfection—in other words, irrigation and medication. Preparation and disinfection both physically and chemically act on the lumen of the root canal itself, trying to remove as much infected material as possible, but also act on the surrounding dentin and all of its components including the dentinal tubules. The chemomechanical process attempts to remove the adhering biofilm as well as microorganisms and their by‐products. It is important to investigate the effect of various treatment options on root canal dentin, the periodontal ligament, and the surrounding alveolar bone. When mechanical processes and chemical agents are applied to a substrate such as dentin, this implies that the dentin will be altered or modified in structure, composition, and/or physical properties. This review aims to summarize the present knowledge on the effects of mechanical instrumentation and chemical irrigation on the root canal dentin and surrounding tissues.

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“…This increase has been attributed to the adherence of calcium ions to the hard tissue of teeth for the agent used. Some studies have reported that self-etch adhesive system produced better bonding strength to laser-irradiated dentin [15, 16]. …”

Section: Discussionmentioning

confidence: 99%

The effect of Er:YAG laser irradiation on the bond stability of self-etch adhesives at different dentin depths

Karadaş

Çağlar

2017

Lasers Med Sci

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The aim of this study was to evaluate the effect of Er:YAG laser irradiation on the micro-shear bond strength of self-etch adhesives to the superficial dentin and the deep dentin before and after thermocycling. Superficial dentin and deep dentin surfaces were prepared by flattening of the occlusal surfaces of extracted human third molars. The deep or superficial dentin specimens were randomized into three groups according to the following surface treatments: group I (control group), group II (Er:YAG laser; 1.2 W), and group III (Er:YAG laser; 0.5 W). Clearfil SE Bond or Clearfil S3 Bond was applied to each group’s dentin surfaces. After construction of the composite blocks on the dentin surface, the micro-shear bond testing of each adhesive was performed at 24 h or after 15,000 thermal cycles. The data were analyzed using a univariate analysis of variance and Tukey’s test (p < 0.05). Laser irradiation in superficial dentin did not significantly affect bond strength after thermocycling (p > 0.05). However, deep-dentin specimens irradiated with laser showed significantly higher bond strengths than did control specimens after thermocycling (p < 0.05). Thermocycling led to significant deterioration in the bond strengths of all deep-dentin groups. The stable bond strength after thermocycling was measured for all of the superficial-dentin groups. No significant difference was found between the 0.5 and 1.2 W output power settings. In conclusion, the effect of laser irradiation on the bond strength of self-etch adhesives may be altered by the dentin depth. Regardless of the applied surface treatment, deep dentin showed significant bond degradation.

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Bond Strength of Adhesive Systems to Er,Cr:YSGG Laser-Irradiated Dentin

Abstract: The self-etching primer seemed to be less affected by dentin irradiation with Er,Cr:YSGG laser. The additional etching and NaOCl solution did not overcome the effects of laser irradiation on dentin.

Cited by 28 publications

References 36 publications

Effects of Er,Cr:YSGG laser parameters on dentin bond strength and interface morphology

Effects of Er,Cr:YSGG laser parameters on dentin bond strength and interface morphology

Effects of mechanical instrumentation and chemical irrigation on the root canal dentin and surrounding tissues

The effect of Er:YAG laser irradiation on the bond stability of self-etch adhesives at different dentin depths

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