1. The majority of patients suffering from varying degrees of oral diseases. Adult caries rate was significantly higher than that of children and young people, and most people with periodontal disease, bad restorations in the mouth, missing teeth, root, root and more wear and temporomandibular joint disorder symptoms are not uncommon . The presence of oral diseases, and dental instruments will undoubtedly increase the difficulty of error correction.
2. Growth and development and development have stopped. Adult growth and development has stopped, bone metabolism, and alveolar bone transformation is relatively slow, relatively slow rate of tooth movement required for correction of a relatively long time on the jaw orthopedic treatment (Bone and Joint Injury Treatment) have been unlikely. For patients with severe skeletal deformities, only with orthographic surgery.
3. More complex social and psychological factors. Due to the different occupation, experience, economic conditions and other requirements of adult correction time, appliance Comprehensive understanding of oral cancer aesthetics and comfort, the cost of treatment, treatment environment, the quality of doctors and the attitude of patients with children, young people are not the same . Three or four-year-old female patients with more stringent requirements on this point, it should attract enough attention in this regard.
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