清洁牙齿是口腔保健工作的一项重要内容,在清洁过程中,选择适合自己的牙膏尤为重要。一、牙膏的选择1.看稀稠度:如果挤牙膏时特别费力,或者牙膏特别稀,不成圆柱状,说明牙膏已经变质了。2.看色泽:普通牙膏应该是 Cleaning teeth is an important part of oral health efforts, and it is especially important to choose your own toothpaste during cleaning. First, the choice of toothpaste 1. To see the thin consistency: If you squeeze toothpaste particularly laborious, or particularly thin toothpaste, not cylindrical, indicating that the toothpaste has deteriorated. Look at the color: ordinary toothpaste should be