Children are in the important period of oral health care: from the age of 6 years old, permanent teeth will erupt continuously, and the milk teeth will fall out in turn, forming a mixed dental row of milk teeth and permanent teeth, until the age of 15 years old, permanent teeth will all erupt, which is the most active and critical stage of growth and development in human life, and it is also an important period for children’s jaw bone and dental arch development and growth, and it is the main formation and functional perfection period of mouth and jaw and craniofacial morphology; this stage is also the peak period of caries It is also the peak period of caries and gingivitis. Moreover, this period is the main period of children’s brain development and character formation, and the beauty and ugliness of facial image will often affect children’s character and psychological health growth. (Psychologist Sigmund Freud once said: “Childhood is an important stage of life, and early mental health is important for one’s future development.”) Therefore, it should be publicized to parents and children through various publicity channels, so that they can understand the basic knowledge of oral health care, and through the cooperation of doctors-patients-parents, we can jointly do a good job of oral health care and early prevention of malocclusion in children. Children’s dental disease characteristics: 1. Gingivitis is mainly caused by unclean mouth, as long as you brush and rinse your mouth carefully, you can solve the oral hygiene problem. 2.High rate of caries, early onset, wide range, fast speed and unobvious self-conscious symptoms. The caries is mainly concentrated in 3 teeth and one surface, namely the occlusal surface of the first and second milk molar and the first permanent molar. The guiding meaning of this in the prevention strategy is two points: Firstly, the caries prevention should be early, before the peak age of caries, then the benefit is the biggest; Secondly, highlight the focus, seize the 3 teeth and one surface, then the caries problem of young children can be solved basically. 3.Any factor that is not conducive to the normal development of the whole body and oral localization may lead to the abnormal development, eruption, arrangement and occlusion of teeth, causing the abnormal development of jaw bone and face, and affecting the facial aesthetic image of individuals, with very serious consequences. 4, children’s dental trauma has an increasing trend. In order to improve the oral health care of children, should do the following work: 1, learn oral health care knowledge Young children are in an important period of both physical growth and knowledge, their own initiative to read some popular science books about oral health care, awareness, and develop the ability to self oral health care. 2, regular oral health checkups at least once a year. Do early detection of problems, even to give treatment. Treat the diseased milk teeth correctly, never take the attitude of ignoring them, should be under the guidance of the dentist, give appropriate treatment; not to mention the first permanent molars that begin to erupt at the age of 6, mistaken for milk molars, disease is not timely treatment. Antibite (“enameled teeth”), buried teeth, tooth replacement disorder, malocclusion caused by bad habits, etc. should be paid attention to, early detection and early treatment. 3, learn the correct method of brushing teeth Choose a health care toothbrush and fluoride toothpaste. Do brush your teeth in the morning and evening, rinse your mouth after meals, and develop good oral hygiene habits from childhood. 4.Apply sulcus sealant to prevent caries Apply the first permanent molar at the age of 6 and the second permanent molar at the age of 12, and choose the suitable method of applying fluoride to prevent caries under the guidance of dentist. 5.Rational diet Less sugary snacks and fine pastries that are easy to paste teeth, or brush and rinse your mouth immediately after eating, especially after brushing your teeth before going to bed, you cannot eat again. 6.Prevent the occurrence of malocclusion at an early stage, treat the occurred malocclusion at an early stage in time to interrupt its development, or guide the benign development of tooth and jaw surface through early control, so as to guarantee the healthy development and growth of children’s mouth and jaw, craniofacial and physical and mental. 7.After complete dislocation of teeth, saline is considered a better and easily available storage fluid. Other fluids such as blood, tissue culture fluid, milk and saliva can also be used as storage fluid. The storage time should not exceed 2 hours under saliva conditions.