There are a lot of people who delay in getting a veneer after tooth extraction, which is harmful. If the teeth are not set for a long time after extraction, it will bring many effects to the whole oral and maxillofacial system. 1, chewing function is reduced, the missing part can not bite, affecting the digestion and absorption of food. 2, because of individual teeth missing, long time without restoration will make the oral tissue change, affecting the alignment of the whole mouth, often manifested as adjacent teeth to the missing area tilt to make the gap smaller, the opposite jaw teeth elongation, resulting in early contact or interference, thus leading to disorder of the bite jaw relationship; serious cases often caused by a tooth missing one side of the tooth waste, so that the incidence of periodontal disease, caries increased significantly. 3, cause periodontal tissue lesions, missing teeth for a long time, adjacent teeth to the missing teeth tilt, the opposite jaw teeth elongation caused by food embedding, followed by periodontal disease. 4, the loss of front teeth often affects the beauty and pronunciation, language is formed in the oral cavity, front teeth mainly affect the accuracy of pronunciation (eat, poetry, know) labiodental sounds (score, fly, put) linguodental sounds (de, special, difficult). How long is the most appropriate time to insert teeth after missing teeth? There is an interdependent relationship between natural teeth and alveolar bone. After the teeth are extracted, the alveolar bone begins to absorb, and the absorption rate is faster in the first 3 months after extraction, and the absorption is basically stable after 3 months (i.e. the wound is completely healed 2~3 months after extraction), which is conducive to the long-term fit of the set dentures and the dental bed, as well as the stability and chewing function of the dentures. Generally, young people can have their teeth placed in about two months. Older people need about 3 months to get veneers because of the slow healing of the extraction wound. The existing science and technology provide patients with three methods of dental implants: 1. movable denture The use of metal hooks to hold on the good teeth, the patient can take off the belt, easy to clean, moderate price. However, the two disadvantages of this method are: poor aesthetics, the patient speaks or laughs when the metal hooks will be exposed; poor comfort foreign body feeling in the mouth; to brush after eating; take off before going to bed; low efficiency of mastication. 2, fixed dentures (porcelain bridge) will be close to the good teeth grinding small to make a set of bridges glued to the two sides of the teeth, the patient can not take off and wear. Its beautiful and comfortable, the price of how much money are. However, it will wear their good teeth, and the natural teeth will be damaged or even extracted after 5 or 6 years. 3. Dental implant is a metal artificial tooth root (titanium) implanted into the bone at the location of the missing tooth, and a porcelain crown is made on the artificial root after 3-6 months. This method is beautiful and comfortable and does not cause damage to one’s teeth, but the price is relatively high. Patients should choose the right method of dental veneers according to their conditions and under the correct guidance of their doctors.