Myth 1: Children are too young to cooperate with dental treatment, so take some medicine and forget it. Fact: Regardless of age, once teeth grow out, tooth decay will occur if oral hygiene is not taken seriously. Toothache caused by tooth decay can not be completely solved by taking medicine alone, only by going to hospital for treatment and taking medicine at the same time can the condition improve as soon as possible. Myth 2: Decayed milk teeth do not need to be treated, if the toothache is simply pulled out and forget about it. Fact: In order for permanent teeth to erupt correctly, there must be induction and proper space for the baby teeth, and this proper space must be maintained by the baby teeth. Without the maintenance of the baby teeth, the permanent teeth will erupt incorrectly, be misaligned or fail to erupt and require orthodontic treatment, which is time consuming and costly.