What is the Order of Baby Teeth Eruption?

The order of eruption of deciduous teeth is mandibular central incisors, maxillary central incisors, lateral incisors, first molars, canine teeth, and second molars. Babies generally start to grow teeth from the mandibular central incisors at around six months of age, but it can also be earlier at three to four months, or later until eleven to twelve months. There is usually a six-month difference in the eruption of the front teeth, and the difference in the eruption of the back teeth can even reach one year. By about two and a half years of age, all twenty deciduous teeth are fully grown.

From the time a baby starts to grow teeth at around six months of age to when the deciduous teeth are basically fully grown at around two and a half years of age, the baby generally grows several teeth every few months. Therefore, special attention should be paid to the child's oral hygiene. Baby teeth growth is a physiological phenomenon, and some babies may not have any abnormal conditions. Parents only need to feed their baby warm water after each meal and take care of oral hygiene.

The timing of tooth eruption is mainly determined by genetic factors. Typically, children start to grow teeth at around six to seven months of age, with some children starting earlier at four months and some starting later at around ten months. In rare cases, some children may only grow their first deciduous tooth after one year of age, which is related to the rate of bone growth during infancy. When a child is born, there are no teeth in the mouth. About six months after birth, the mandibular central incisors start to erupt, and all the deciduous teeth erupt by two and a half years of age.

Mineralization of the enamel of all deciduous teeth is completed within the first year of life (1.5 months to 11 months), and all deciduous teeth erupt within the first two years of life (6 months to 24 months). Therefore, if a child experiences systemic or local disorders within the first year of life, it will affect the development of the enamel of the deciduous teeth, leading to tooth development defects and susceptibility to caries. It is important for mothers to understand that there is significant individual variation in the timing of tooth eruption. This is important because individual differences can result in some children erupting their teeth earlier and some later, with the earliest being at four months and the latest being at one year of age. However, as long as it falls within the range of individual differences, it is considered normal. If a baby has not grown their first deciduous tooth by the age of one, it is considered late eruption of deciduous teeth.