کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6053278 1197026 2015 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of water storage on fatigue strength of self-etch adhesives
ترجمه فارسی عنوان
تأثیر ذخیره آب بر مقاومت خستگی چسب های خود اچ
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی دندانپزشکی، جراحی دهان و پزشکی
چکیده انگلیسی

ObjectivesThe purpose of this study was to determine enamel and dentin bond durability after long-term water storage using self-etch adhesives.MethodsTwo single step self-etch adhesives (SU, Scotchbond Universal and GB, G-ӕnial Bond) and a two-step self-etch adhesive (OX, OptiBond XTR) were used. The shear bond strength (SBS) and shear fatigue strength (FS) of the enamel and dentin were obtained with and without phosphoric acid pre-etching prior to application of the adhesives. The specimens were stored in distilled water at 37 °C for 24 h, 6 months, and one year. A staircase method was used to determine the FS using a frequency of 10 Hz for 50,000 cycles or until failure occurred.ResultsThe SBS and FS of enamel bonds were significantly higher with pre-etching, when compared to no pre-etching for the same water storage period. The FS of dentin bonds with pre-etching tended to decrease relative to no pre-etching at the same storage period. For the one year storage period, SU and GB with pre-etching showed significantly lower FS values than the groups without pre-etching.ConclusionsThe influence of water storage on FS of the self-etch adhesives was dependent on the adhesive material, storage period and phosphoric acid pre-etching of the bonding site.Clinical significancePhosphoric acid pre-etching of enamel improves the effectiveness of self-etch adhesive systems. Inadvertent contact of phosphoric acid on dentin appears to reduce the ability of self-etch adhesives to effectively bond resin composite materials.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Dentistry - Volume 43, Issue 12, December 2015, Pages 1416-1427
نویسندگان
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