When do you start brushing your baby's teeth? Proper oral care for babies starts BEFORE the first tooth appears. Since plaque and bacteria can build up in baby's mouth, it is recommended that parents clean baby's gums. This task is easy with the MAM Oral Care Rabbit. Mom (or dad) simply tuck their fingers into the rabbit's super soft ears like a glove, and gently massage baby's gums clean with water. Oral Care Rabbit for babies age Newborn ...