Tensile bond strength of single-step self-etch adhesives to Er:YAG laser-irradiated dentin
| Autor: | Yoshito Hirai, Junji Kato, Atsushi Kameyama, Koya Aizawa |
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| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
Materials science
Biomedical Engineering Dentistry Lasers Solid-State In Vitro Techniques law.invention chemistry.chemical_compound stomatognathic system law Tensile Strength Ultimate tensile strength Dentin medicine Silicon carbide Animals Radiology Nuclear Medicine and imaging Irradiation Composite material business.industry Bond strength Dental Bonding Laser Resin Cements stomatognathic diseases medicine.anatomical_structure chemistry Dentin-Bonding Agents Methacrylates Cattle Adhesive business Er:YAG laser |
| Zdroj: | Photomedicine and laser surgery. 27(1):3-10 |
| Popis: | The purpose of this study was to evaluate the influence of Er:YAG laser irradiation on the bond strength to dentine of three single-step adhesives (AQ Bond Plus, G-Bond, and Clearfil Tri-S Bond), and one two-step self-etch adhesive (Clearfil Megabond) as a control.The vast majority of the numerous reports on resin bonding to Er:YAG-lased dentine have concluded that Er:YAG laser irradiation is less effective in terms of bond strength, because of the sub-surface damage it produces. However, its effect in combination with single-step adhesives on bonding to dentine remains to be clarified.Eighty bovine incisors were ground with silicon carbide paper to obtain a flat dentine surface, which 40 were irradiated with an Er:YAG laser. Both lased and unlased dentine was bonded to a resin composite with each adhesive. Tensile bond strength was determined after 24 h of storage in water at 37 degrees C. Failure patterns after tensile bond testing was analyzed by scanning electron microscopy.The two-step self-etch adhesive (Clearfil Megabond) showed the highest bond strength to unlased dentine, but was significantly less effective on lased dentine than the three single-step adhesives. On the other hand, AQ Bond Plus produced an effective bond strength to both lased and unlased dentine, perhaps due to its low viscosity.The single-step adhesives tested in this study were as effective in combination with Er:YAG-lased dentine as the two-step self-etch adhesive. |
| Databáze: | OpenAIRE |
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