对两义齿加工厂生产的镍铬金属烤瓷全冠在人工唾液中腐蚀性的对比研究.docVIP

 对两义齿加工厂生产的镍铬金属烤瓷全冠 在人工唾液中腐蚀性的对比研究 罗亚莉1,2，康宏1* 5 10 15 20 25 30 35 40 45 （1. 兰州大学口腔医学院，兰州 730000； 2. 甘肃省卫生学校口腔教研室，兰州 730000） 摘要：目的 分别对广州（A 厂）和兰州（B 厂）两地加工厂代表生产的镍铬烤瓷熔附金属 全冠(porcelain-fused-to-metal crown，PFM 冠)进行为期一年的体外腐蚀性对比研究，并 同步用 X 射线能量散谱仪(EDS)对检测样品进行能谱分析，了解本地市场的规范化程度。方 法 将两厂家生产的镍铬 PFM 冠样品共 40 个随机分为 4 组（10 天组、1 月组、6 月组、12 月组）分别浸泡于 ISO /TR10271 标准(37 ，pH 6.8)配制的人工唾液中，于 10 天、1 月、 6 月、12 月用电感耦合等离子体发射光谱仪（ICP-AES）测定浸提液中析出的镍离子浓度， 同步采用 EDS 对检测样品进行元素组成分析。结果 A、B 两厂样品的镍离子析出量一年组 差异有统计学意义（F=9.360，P=0.000）。能谱分析结果显示两厂样品主要成分都为 Ni、 Cr、Mo，但含量不同。结论 一年内 A、B 两厂的镍铬 PFM 冠在抗腐蚀性能方面存在差异性， 远期效果有待进一步观察。 关键词：烤瓷熔附金属全冠；腐蚀；镍铬；人工唾液 中图分类号：R783.1 A comparative study on corrosion of nickel-chromium porcelain-fused-to-metal crown in artificial saliva from samples of two denture manufacture factory LUO Yali1,2, KANG Hong1 (1. School of Stomatology, Lanzhou University, LanZhou 730000; 2. Department of Stomatology, The Health School of Gansu Province, LanZhou 730000) Abstract: Objective An erosive comparative test in vitro was undertaken on the porcelain-fused-to-metal (PFM) crown specimens from two different denture factories during one year by means of X-ray energy dispersive spectrometer (EDS) in order to analyze and understand the degree of normalization in local market. Methods Four groups of the Ni-Cr PFM crown samples from two factories were soaked in the ISO/TR10271 standard artificial saliva (37℃, pH 6.8) and were examined the content of the nickel ion released by inductively coupled plasma atomic emission spectrometry (ICP-AES) method and the composition of samples by EDS in ten days, one month, six months and twelve months. Result Nickel ion released content was different between A and B factory in one-year group (F=9.360, P=0.000). The EDS analysis appears that the composition of samples is mainly Ni, Cr, Mo, but the content different. Conclusion The corrosion resistance of the Ni-Cr PFM crown samples from A and B factory was different. The longtime effect is needed to be further obser