An in vitro wear study of posterior denture tooth materials on human enamel
An in vitro wear study of posterior denture tooth materials on human enamel
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DOI：
10.1046/j.1365-2842.2001.00670.x
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发表时间：
2001-05-01
影响因子：
2.9
通讯作者：
Vanherle, G
中科院分区：
文献类型：
--
作者：
Abe, Y;Sato, Y;Vanherle, G
本研究评估了5种后牙义齿材料对人牙釉质的磨损作用。牙齿标本呈尖形，牙釉质标本制成10 × 10 × 5 mm的板。所有材料-牙釉质组合都使用一种机器进行测试，该机器设计为在1千克负载下以60次循环min（-1）产生20 x 10(4)次滑动接触，每次行程在颊-舌方向产生4毫米滑动距离。磨损分析测量为每个组合的总高度损失。此外，还对每个磨损试样的表面粗糙度（Ra）进行了评估。聚甲基丙烯酸甲酯（PMMA）搪瓷对的总高度损失最小，瓷（Po）搪瓷对的总高度损失最大。复合Ra值以高强度树脂(HR)-搪瓷对最低，po -搪瓷对最高。结果表明，pmma -牙釉质是最佳组合，po -牙釉质是最差组合。
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 x 10 x 5 mm plate. All material-enamel combinations were tested using a machine designed to produce sliding contact 20 x 10(4) 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.