随着口腔修复材料的发展，复合树脂在牙体硬组织缺损的修复应用越来越多。为取得理想的粘结效果，临床上多采用磷酸进行牙面酸蚀，对于缺损深达牙本质、缺损面大而且光滑、有明显烟、茶渍附着者，直接用磷酸酸蚀，粘结效果差，修复材料容易脱落。笔者利用超声波洁牙机中的喷粉 With the development of oral repair materials, more and more composite resins are used in the repair of dental hard tissue defects. In order to achieve the desired bonding effect, the clinical use of phosphate for tooth surface erosion, for the defect of deep dentin, defect surface is large and smooth, with obvious smoke, tea stains attached, directly with phosphoric acid etching, bonding effect Poor, repair materials easily fall off. I use ultrasonic scaler in the dusting