Milk teeth are neat and gapless and do not require special treatment. As the child grows older, the mandible and maxilla in the mouth grow and develop, there will be gaps in the teeth, and permanent teeth can grow after the milk teeth fall out. 1. Milk teeth erupt around 5 months after birth, but the growth of milk teeth can vary due to different body types. The absence of gaps in the milk teeth will not affect the replacement of teeth in the future, because the teeth and jawbone grow continuously during development, which may cause gaps in the milk teeth, and the permanent teeth will grow gradually after the milk teeth fall out. 2. During tooth replacement, milk teeth start to fall out from incisors, it is recommended to do a good job of oral hygiene, eat more food rich in high quality proteins and a variety of nutrients to promote the growth of teeth in the mouth. If there is not enough space, permanent teeth will appear after the eruption of crowded teeth, after the complete replacement of teeth in the mouth, you can go to the hospital stomatology department to do orthodontics. Symptoms of milk teeth neat no gap, exclude physiological factors, should be timely consultation, so as not to delay the condition.