An in vitro wear study of posterior denture tooth materials on human enamel
Autor: | Paul Lambrechts, Tsuyoshi Taji, Guido Vanherle, Yasumasa Akagawa, Yasuhiko Abe, Yuuji Sato |
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Rok vydání: | 2001 |
Předmět: |
Silver
Materials science Surface Properties Polyurethanes Statistics as Topic Tooth Attrition Tooth Artificial Methacrylate Composite Resins Polyethylene Glycols Dental Restoration Wear Dental Materials chemistry.chemical_compound Dental porcelain Polymethacrylic Acids stomatognathic system Hardness Materials Testing Surface roughness Humans Polymethyl Methacrylate Methyl methacrylate Composite material Dental Enamel General Dentistry Analysis of Variance Enamel paint Dental Porcelain stomatognathic diseases Acrylates chemistry visual_art visual_art.visual_art_medium Gold Alloys Methacrylates Regression Analysis Cusp (anatomy) Chromium Alloys Stress Mechanical Copper Palladium Dental Alloys |
Zdroj: | Journal of Oral Rehabilitation. 28:407-412 |
ISSN: | 1365-2842 0305-182X |
DOI: | 10.1046/j.1365-2842.2001.00670.x |
Popis: | This in vitro study evaluated the wear effects of five posterior denture tooth materials on human enamel. The tooth specimen was cusp shaped and enamel specimen was formed as a 10 C 10 C 5 mm plate. All material-enamel combinations were tested using a machine designed to produce sliding contact 20 C 104 times at 60 cycles min-1 and a 4-mm sliding distance per stroke in the bucco-lingual direction under a load of 1 kg. Wear analysis was measured as the total height loss of each combination. In addition, the surface roughness (Ra) of each worn specimen was also evaluated. The least total height loss occurred with poly (methyl methacrylate) (PMMA) enamel pair, and the greatest did with porcelain (Po)-enamel pair. The lowest compound Ra value was measured in high-strength resin (HR)-enamel pair, and the highest in Po-enamel pair. These findings suggest that the best combination is PMMA-enamel, and the poorest combination is Po-enamel. |
Databáze: | OpenAIRE |
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