What are the dangers of misalignment? 1, affect the development of the combined jaw surface In the development process of children, due to malocclusion will affect the normal development of soft and hard tissues of the combined jaw surface, such as the anterior teeth are not treated in time to limit the development of the maxilla, while the mandible does not have a coordinated relationship between the upper and lower dental arches and excessive forward development so that the formation of the middle 1/3 of the face depression and mandibular protrusion deformity, so that the face presents a crescent-shaped face, the other side of the back teeth or malocclusion can cause asymmetric facial development. 2, affect the health of the oral cavity teeth crowded together, with a soft toothbrush, more meticulous people are difficult to thoroughly brush clean. The gap filled with food is a good place for bacteria to breed and form plaque to attach to the tooth surface, the smooth tooth surface will gradually become rough, corrosion crumbling to form cavities, and tooth decay is thus produced. The plaque stimulates the gum, causing the gum to be red and swollen, bleeding when touched, the gum gradually receding, the root of the tooth slowly exposed, and periodontitis follows. Sometimes the teeth protrude too far forward, and the gums of the front teeth lose the moisturizing effect of lips and the sterilizing effect of saliva and are exposed to the dry air, and the gums also become red and inflamed, forming a tough ball of flesh, i.e. gum polyp. Poorly aligned teeth, or the relationship between the upper and lower dental arches is not coordinated, when opening and closing the mouth and activities, the muscles have to put more effort, the jaw joint movement in an abnormal way, over time, the joint will be damaged: pain, open and close the mouth click sound, in serious cases can not open the mouth. 3, affect the oral function Serious errors and deformities can affect the normal function of the oral cavity, such as extensive posterior teeth open dentition, locked dentition, severe crowding, so that the contact surface of the posterior teeth to bite food is reduced, resulting in reduced food grinding efficiency digestive dysfunction; anterior teeth open dentition or deep overdenture will cause abnormal pronunciation; anterior teeth open dentition, anterior dentition may destroy the mouth and lips close together causing swallowing abnormalities; mandibular recession, limiting the The development of the respiratory tract is limited by the recession of the lower jaw, and the backward fall of the tongue and other soft tissues can lead to poor breathing and snoring. 4, affect the appearance of the appearance of various types of malocclusion can affect the appearance of the appearance, can present open lips and teeth, double jaw protrusion, long face or short face and other deformities. 5, systemic hazards malocclusion not only causes harm to the local dental and cranial surface but also to the whole body, such as reduced chewing function can cause indigestion and gastrointestinal diseases, in addition to facial deformity can cause serious psychological and mental disorders for patients.