Influence of different smear layers on bond durability of self-etch adhesives
| Autor: | Robert L. Erickson, Keiichi Sai, Akimasa Tsujimoto, Arisa Imai, Masashi Miyazaki, Toshiki Takamizawa, Wayne W. Barkmeier, Mark A. Latta |
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| Rok vydání: | 2018 |
| Předmět: |
Dental Stress Analysis
Materials science Surface Properties Smear layer 02 engineering and technology 03 medical and health sciences 0302 clinical medicine Acid Etching Dental Polymethacrylic Acids stomatognathic system Materials Testing Dentin medicine Bisphenol A-Glycidyl Methacrylate General Materials Science Composite material Dental Enamel General Dentistry Enamel paint Dental Bonding Bond quality 030206 dentistry 021001 nanoscience & nanotechnology Durability Shear bond Self etch adhesive Resin Cements medicine.anatomical_structure Mechanics of Materials Dentin-Bonding Agents Smear Layer visual_art visual_art.visual_art_medium Adhesive Shear Strength 0210 nano-technology |
| Zdroj: | Dental Materials. 34:246-259 |
| ISSN: | 0109-5641 |
| Popis: | Objective The purpose of this study was to determine the influence of different smear layers on enamel and dentin bond durability of various types of self-etch adhesives. Methods Two universal adhesives, Scotchbond Universal (SU) and Prime & Bond elect (PE); a conventional single-step self-etch adhesive, G-aenial Bond (GB); and two two-step self-etch adhesives, Optibond XTR (OX) and Clearfil SE Bond (SE) were used in this study. Shear bond strengths (SBS) and shear fatigue strengths (SFS) to human enamel and dentin were determined with different smear layer conditions. The prepared specimens were divided into three groups. The bonding surfaces were prepared by grinding with either (1) #180, (2) #600, or (3) #4000-SiC papers before making the bonded assemblies. For each group, 15 specimens were prepared for the SBS and 30 specimens for the SFS. Results The two-step self-etch adhesives showed significantly higher SFS values than the single-step self-etch adhesives, regardless of the smear layer condition or substrate. Although most of the tested adhesives showed no significant differences in enamel SFS values among the smear layer groups, SU, GB, and SE showed significantly lower SFS values in the #180 in dentin groups than the #600 and #4000 groups. Conclusion The influence of different smear layer conditions on bond durability was adhesive dependent. Furthermore, the smear layers generated on different substrates also influenced the bond quality of the self-etch adhesives. Significance Smear layer conditions of enamel and dentin influence the bond durability of universal adhesives and conventional single and two-step self-etch adhesives. |
| Databáze: | OpenAIRE |
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