Purpose: to probe one suitable way to treat middle-age and old-age patients who suffer dental disease.
目的：探索一种适合中老年牙病病人的治疗办法。
Results: SEM showed that nano TiO2 and nano ZrO2 were distributed into dental composite resin evenly and X ray electron probe showed the components of nano materials were 8.59% and 7.55% respectively.
结果：扫描电镜显示纳米二氧化钛和纳米二氧化锆均匀分布在牙科复合树脂中，X -线能谱分析显示纳米材料含量分别为8.59%和7.55%。
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