| In vivo wear pattern of experimental light-cured hybrid composite resins. | |
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MedLine Citation:
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PMID: 8004917 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This study evaluated the effect of various types of microfiller on the in vivo wear resistance of composite resins. Experimental light-cured composites with two different microfiller systems were prepared: (1) 56 wt % fine quartz filler, 21 wt% organic filler and 3 wt% colloidal silica filler (Hybrid type 1), and (2) 64 wt% fine quartz filler and 21 wt% colloidal silica filler (Hybrid type 2). The resin monomer consisted of 50 wt % Bis-GMA and 50 wt% TEGDMA. These materials were placed in 2 mm diameter cylindrical cavities located in the OCA (occlusal contact area) or the CFA (contact free area) in cast gold-silver-palladium alloy full coverage crowns, which were temporarily set in a volunteer patient's mouth. The crowns were removed at monthly intervals for SEM observation. Hybrid type 1, which contained organic fillers, showed bulk fractures in the OCA, by the second month of the experiment. However, reinforcement of the resin matrix by dispersion of microfiller provided Hybrid type 2 with superior wear resistance for up to two months. |
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Authors:
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A Okamoto; K Sekiya; M Fukushima; M Iwaku |
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Publication Detail:
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Type: Comparative Study; Journal Article |
Journal Detail:
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Title: Dental materials journal Volume: 12 ISSN: 0287-4547 ISO Abbreviation: Dent Mater J Publication Date: 1993 Dec |
Date Detail:
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Created Date: 1994-07-20 Completed Date: 1994-07-20 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8309299 Medline TA: Dent Mater J Country: JAPAN |
Other Details:
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Languages: eng Pagination: 225-32 Citation Subset: D |
Affiliation:
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Department of Operative Dentistry and Endodontics, Niigata University School of Dentistry, Japan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Bisphenol A-Glycidyl Methacrylate Composite Resins / chemistry* Crowns Dental Restoration, Permanent / methods* Humans Microscopy, Electron, Scanning Particle Size Polyethylene Glycols Polymethacrylic Acids Quartz Silicon Dioxide Surface Properties |
| Chemical | |
Reg. No./Substance:
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0/Composite Resins; 0/Polyethylene Glycols; 0/Polymethacrylic Acids; 109-16-0/triethylene glycol dimethacrylate; 14808-60-7/Quartz; 1565-94-2/Bisphenol A-Glycidyl Methacrylate; 7631-86-9/Silicon Dioxide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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