In general, there is no age requirement for brushing, but it is important to brush your baby’s teeth as soon as the first teeth come in, for normal healthy development and to prevent cavities. There are thousands of bacteria in the mouth and babies are no exception. Generally after breastfeeding, the protease in the baby’s saliva to break down the food will leave more bacteria, if not cleaned up in time will be attached to the baby’s tender teeth, for the baby can not effectively maintain oral hygiene, bacterial accumulation can be caused by dental caries, periodontal disease, inflammation of the gums, soft tissue herpes and other oral diseases, but also can cause systemic diseases. Therefore, it is recommended to brush the baby’s teeth when the first tooth grows. It is recommended that parents can use the index finger wrapped in gauze dipped in warm water to the baby to clean the mouth, while the baby’s toothpaste is best to choose children’s toothpaste, if the baby for a long time to use the adult toothpaste, there may be fluorosis.