title: Influence of laser etching on enamel and dentin bond strength of Silorane System Adhesive.
abstract: The aim of this in vitro study was to evaluate the shear bond strength (SBS) of Silorane System Adhesive to enamel and dentin surfaces that had been etched with different procedures. Ninety freshly extracted human third molars were used for the study. After the teeth were embedded with buccal surfaces facing up, they were randomly divided into two groups. In group I, specimens were polished with a 600-grit silicon carbide (SiC) paper to obtain flat exposed enamel. In group II, the overlying enamel layer was removed and exposed dentin surfaces were polished with a 600-grit SiC paper. Then, the teeth in each group were randomly divided into three subgroups according to etching procedures: etched with erbium, chromium:yttrium-scandium-gallium-garnet laser (a), etched with 35% phosphoric acid (b), and non-etched (c, control). Silorane System Adhesive was used to bond silorane restorative to both enamel and dentin. After 24-h storage in distilled water at room temperature, a SBS test was performed using a universal testing machine at a crosshead speed of 1 mm/min. The data were analyzed using two-way ANOVA and Bonferroni tests (p < 0.05). The highest SBS was found after additional phosphoric acid treatment in dentin groups (p < 0.05). There were no statistically significant differences between the laser-etched and non-etched groups in enamel and dentin (p > 0.05). The SBS of self-etch adhesive to dentin was not statistically different from enamel (p > 0.05). Phosphoric acid treatment seems the most promising surface treatment for increasing the enamel and dentin bond strength of Silorane System Adhesive.
authors.affiliation: Department of Restorative Dentistry, School of Dentistry, Hacettepe University, 06100, Sıhhiye, Ankara Province, Turkey, ildemustunkol@gmail.com.
authors.forename: Ildem
authors.initials: I
authors.lastname: Ustunkol
authors.forename: A Ruya
authors.initials: AR
authors.lastname: Yazici
authors.forename: Jale
authors.initials: J
authors.lastname: Gorucu
authors.forename: Berrin
authors.initials: B
authors.lastname: Dayangac
mesh_terms: D000134:Acid Etching, Dental / Q000379:methods*; D002700:Chloramines / Q000737:chemistry; D001840:Dental Bonding / Q000379:methods; D003743:Dental Enamel / Q000737:chemistry*; D003799:Dental Stress Analysis; D017220:Dentin-Bonding Agents / Q000737:chemistry*; D006801:Humans; D007834:Lasers; D053844:Lasers, Solid-State; D008422:Materials Testing; D008963:Molar / Q000601:surgery*; D010756:Phosphoric Acids; D033081:Shear Strength; D062047:Silorane Resins / Q000737:chemistry*; D014105:Tosyl Compounds / Q000737:chemistry
chemical_list: D002700:Chloramines; D017220:Dentin-Bonding Agents; D010756:Phosphoric Acids; D062047:Silorane Resins; D014105:Tosyl Compounds; C016300:chloramine-T; C030242:phosphoric acid
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