Many parents have a misunderstanding: it doesn’t matter if the milk teeth don’t grow well, they will be replaced sooner or later. Professional dentist reminds: “Children generally from 6 months to grow the first milk teeth, 6 weeks of age around the beginning of tooth replacement, to the age of 12 years old basic replacement, milk teeth through the child 12 years, this stage is also an important stage of the child’s growth and development.” Children’s tooth replacement period generally from the age of 6 weeks, if the child to the age of 6 years old has not begun to change teeth, all the parents, please do not worry, generally speaking from the age of 5 years old to the age of 8 years old to begin to change the teeth are normal, generally 12 weeks of age to the age of 14 years of age end of the change of teeth. Milk teeth have many important roles: Therefore, young parents should recognize the important role of milk teeth, from the child’s first tooth eruption that is to protect, develop a good habit of brushing; completely eliminate milk teeth is temporary, irrelevant to the erroneous view, so that your babies have a mouthful of healthy, beautiful teeth. Professional dentists emphasize that children in the replacement of teeth during the emergence of gingivitis, which is temporary, teeth in the eruption, the gums cover the surface of the teeth, the teeth have not grown out, repeated chewing will bite the surface of the teeth to cause injury. In addition, when the teeth are just erupting, food debris is left on the surface, so gingivitis can occur. The most common in children is crowded gingivitis, children in the replacement teeth during the period due to misalignment, crowding, teeth ectopic pressure caused by inflammation of the gums, coupled with poor brushing habits, such as intended to cause bacterial growth, will affect oral hygiene. In the child is small did not recognize the importance of oral hygiene, can not insist on brushing and rinsing, over time will lead to gingivitis. And some children because of eating hard things cut the oral mucosa, unbalanced diet, lip biting and other bad oral habits triggered mouth ulcers, also lead to inflammation of the gums. Therefore, parents should always observe the status of children’s oral hygiene, pay attention to oral health care, found that the problem should be promptly to the hospital. Change the finger-sucking, teeth grinding, biting the lower lip, open-mouth breathing and other bad habits that can cause malocclusion, if there are children’s rhinitis to be treated as early as possible, which is also a factor affecting oral health, eat more fruits, vegetables and other foods containing crude fiber will play a self-cleaning effect on the teeth.