Lost teeth usually need to be restored and treated as early as possible, otherwise it can lead to more oral and health problems. 1. When chewing food on a daily basis, the teeth will interact with each other in the process of using the force, but when the loss of our teeth occurs, the remaining teeth will be tilted because there is no support from the neighboring teeth. The remaining teeth will be tilted without the support of the neighboring teeth, and then more teeth will be tilted and damaged one after another. 2. When the remaining teeth are tilted, the tooth alignment and gaps will be changed and damaged, which will easily cause food impaction when chewing food in daily life, and the teeth will be prone to localized caries and periodontal disease in long time misuse. 3. After the teeth fall out, the correct occlusal relationship of the teeth is destroyed, and then continue to use it will easily cause occlusal dysfunction and serious even lead to temporomandibular joint disorders and other problems. 4. Food digestion teeth play a very important role, food first after full chewing into the gastrointestinal tract, for further processing and treatment, if the teeth are missing and damaged, the food is not processed through the teeth will increase the burden on the gastrointestinal tract and the incidence of disease.