| Effect of prior acid etching on bonding durability of single-step adhesives. | |
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MedLine Citation:
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PMID: 18666501 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study investigated the effect of prior phosphoric acid etching on the enamel bond strength of five single-step self-etch adhesive systems: Absolute, Clearfil tri-S Bond, Fluoro Bond Shake One, G-Bond and One-Up Bond F Plus. Bovine mandibular incisors were mounted in self-curing resin, and the facial surfaces were wet ground with #600 silicon carbide paper. Adhesives were applied to the enamel surfaces with or without prior phosphoric-acid etching and light irradiated. The resin composites were condensed into a mold and light irradiated. In total, 40 specimens were tested per adhesive system with and without prior acid etching and were further divided into two groups: those stored in water at 37 degrees C for 24 hours without cycling and those stored in water at 37 degrees C for 24 hours followed by thermal cycling between 5 degrees C and 55 degrees C with 10,000 repeats. After storage under each set of conditions, the specimens were tested in shear mode at a crosshead speed of 1.0 mm/minute. Two-way analysis of variance, the Student's t-test and the Tukey HSD test were used to analyze the data at a significance level of 0.05. For the specimens without prior acid etching, the mean bond strengths to enamel ranged from 11.0 to 14.6 MPa after 24-hour storage in water, while the corresponding values for specimens with prior acid etching ranged from 15.2 to 19.3 MPa. When these specimens were subjected to thermal cycling, the mean bond strengths ranged from 11.3 to 17.0 MPa without prior acid etching and from 12.3 to 23.2 MPa with prior acid etching. The changes in enamel bond strengths differed among the adhesive systems tested. After 24-hour storage in water, the most common failure modes were adhesive failure and mixed failure for specimens with and without prior acid etching, respectively. Thus, through a careful choice of adhesive system, prior acid etching can increase the bond strengths of single-step self-etch adhesive systems. |
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Authors:
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Takayuki Watanabe; Keishi Tsubota; Toshiki Takamizawa; Hiroyasu Kurokawa; Akitomo Rikuta; Susumu Ando; Masashi Miyazaki |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Operative dentistry Volume: 33 ISSN: 0361-7734 ISO Abbreviation: Oper Dent Publication Date: 2008 Jul-Aug |
Date Detail:
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Created Date: 2008-07-31 Completed Date: 2008-10-27 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7605679 Medline TA: Oper Dent Country: United States |
Other Details:
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Languages: eng Pagination: 426-33 Citation Subset: D |
Affiliation:
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Nihon University School of Dentistry, Department of Operative Dentistry, Tokyo, Japan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acid Etching, Dental
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methods* Adhesiveness Animals Carbon Compounds, Inorganic / chemistry Cattle Composite Resins / chemistry Dental Bonding* Dental Enamel / anatomy & histology Dentin-Bonding Agents / chemistry* Methacrylates / chemistry Microscopy, Electron, Scanning Phosphoric Acids / chemistry Resin Cements / chemistry Shear Strength Silicon Compounds / chemistry Stress, Mechanical Surface Properties Temperature Time Factors Water / chemistry |
| Chemical | |
Reg. No./Substance:
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0/Absolute adhesive; 0/Carbon Compounds, Inorganic; 0/Clearfil S3 Bond; 0/Composite Resins; 0/Dentin-Bonding Agents; 0/FL-BOND S-1; 0/G Bond; 0/Methacrylates; 0/One-Up-Bond F; 0/Phosphoric Acids; 0/Resin Cements; 0/Silicon Compounds; 409-21-2/silicon carbide; 7664-38-2/phosphoric acid; 7732-18-5/Water |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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