Tooth brushing starts at birth by cleaning your baby's gums with a clean, damp gauze after each meal. When the first teeth start to errupt, we stop the gauze and start using a toothbrush with a small (rice grain size) amount of toothpaste containing 1000ppm of fluoride. We brush the baby's teeth with this small amount of toothpaste in the morning and in the evening, until about the age of three and a half, that is, until the child can rinse well.