The effect of flowable composite lining and dentin location on microtensile bond strength and internal fracture formation
| Autor: | Nao Kominami, Alireza Sadr, Minh N Luong, Keiichi Hosaka, Masahiro Yoshiyama, Yasushi Shimada, Yasunori Sumi, Junji Tagami |
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| Rok vydání: | 2019 |
| Předmět: |
Dental Stress Analysis
Materials science Surface Properties 0206 medical engineering Composite number 02 engineering and technology Composite Resins Internal fracture 03 medical and health sciences 0302 clinical medicine stomatognathic system Microtensile bond strength test Tensile Strength Materials Testing Dentin medicine Flowable Composite Humans Composite material General Dentistry Bonded interface Bond strength Dental Bonding 030206 dentistry 020601 biomedical engineering Resin Cements Clearfil SE Bond stomatognathic diseases Cross-Sectional Studies medicine.anatomical_structure Dentin-Bonding Agents Ceramics and Composites Adhesive SS-OCT |
| Zdroj: | Dental Materials Journal. 38:798-805 |
| ISSN: | 1881-1361 0287-4547 |
| Popis: | The objective of this study was to determine the effect of flowable composite lining and dentin location on internal dentin fracture formation in the microtensile bond strength (MTBS) test using swept-source optical coherence tomography (SS-OCT). MTBS test beams (1.0×1.0 mm) were prepared from human superficial and deep dentin, which was bonded with a self-etch adhesive (Clearfil SE Bond) and hybrid composite resin (Clearfil AP-X), with or without flowable lining (Clearfil Majesty ES-Flow). We tested 4 groups according to placement technique (with vs. without flowable liner) and dentin (superficial vs. deep) locations. Cross-sectional 2D images of the bonded interface were obtained before and after the MTBS test. Internal dentin fracture after MTBT was observed as a bright zone in SS-OCT. Flowable lining significantly reduced internal fracture formation in dentin (p |
| Databáze: | OpenAIRE |
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