压电陶瓷换能片，广泛应用于超声波洁牙机。
Piezoelectric ceramic is used widely for ultrasonic tooth cleaner.
目的：观察儿童使用声波震动牙刷清洁牙及控制菌斑的效果。
PURPOSE: to evaluate the efficacy of using sonic electric toothbrush to clean the teeth and control dental plaque in children.
目的：观察儿童使用声波震动牙刷清洁牙及控制菌斑的效果。
PURPOSE: to evaluate the efficacy of using sonic electric toothbrush to clean the teeth and control dental plaque in children.
应用推荐