Effect of bioactive glass-containing resin composite on dentin remineralization
| Autor: | Harry B. Davis, Han Eul Bae, Ji-Hyun Jang, Myoung Geun Lee, Duck Su Kim, Jack L. Ferracane, Dongseok Choi |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Scanning electron microscope Simulated body fluid Composite number Infrared spectroscopy 02 engineering and technology Composite Resins law.invention 03 medical and health sciences 0302 clinical medicine stomatognathic system law Dentin medicine Animals Composite material General Dentistry Remineralisation 030206 dentistry 021001 nanoscience & nanotechnology medicine.anatomical_structure Bioactive glass Attenuated total reflection Tooth Remineralization Microscopy Electron Scanning Cattle Glass 0210 nano-technology |
| Zdroj: | Journal of dentistry. 75 |
| ISSN: | 1879-176X |
| Popis: | Objectives The purpose of this study was to evaluate the effect of bioactive glass (BAG)-containing composite on dentin remineralization. Methods Sixty-six dentin disks with 3 mm thickness were prepared from thirty-three bovine incisors. The following six experimental groups were prepared according to type of composite (control and experimental) and storage solutions (simulated body fluid [SBF] and phosphate-buffered saline [PBS]): 1 (undemineralized); 2 (demineralized); 3 (demineralized with control composite in SBF); 4 (demineralized with control composite in PBS); 5 (demineralized with experimental composite in SBF); and 6 (demineralized with experimental composite in PBS). BAG65S (65% Si, 31% Ca, and 4% P) was prepared via the sol-gel method. The control composite was made with a 50:50 Bis-GMA:TEGDMA resin matrix, 57 wt% strontium glass, and 15 wt% aerosol silica. The experimental composite had the same resin and filler, but with 15 wt% BAG65S replacing the aerosol silica. For groups 3–6, composite disks (20 × 10 × 2 mm) were prepared and approximated to the dentin disks and stored in PBS or SBF for 2 weeks. Micro-hardness test, attenuated total reflection Fourier-transform infrared spectroscopy (ATR-FTIR) and field-emission scanning electron microscopy (FE-SEM) was investigated. Results The BAG-containing composite significantly increased the micro-hardness of the adjacent demineralized dentin. ATR-FTIR revealed calcium phosphate peaks on the surface of the groups which used BAG-containing composite. FE-SEM revealed surface deposits partially occluding the dentin surface. No significant difference was found between SBF and PBS storage. Clinical Significance Bioactive glass is a potentially useful material for remineralization of tooth structure. When incorporated into a resin composite, it may aid in remineralizing the adjacent demineralized dentin, thus preventing further destruction of the tooth. Conclusion BAG-containing composites placed in close proximity can partially remineralize adjacent demineralized dentin. |
| Databáze: | OpenAIRE |
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