Some people remove the diseased tooth, no longer in pain, even if everything is fine. Especially when 1-2 teeth are missing, they do not pay attention to it and think that they can get by with eating, so they do not put in the missing teeth for a long time. The consequences of doing so are very serious. Our teeth are arranged in a symmetrical arch-shaped row on the jawbone, closely adjacent to each other. When any one of these teeth is under stress, the other teeth can help support it so that it does not tilt and fall. When a tooth in the row is missing, it disrupts the adjacent tooth relationship and causes the adjacent teeth in the missing area to shift. The tooth opposite the missing tooth will continue to elongate. Therefore, long-term tooth loss will cause the tilt of adjacent teeth and the elongation of the opposing teeth, which will not only make it difficult to set teeth in the future, but also make the gap between the remaining teeth appear larger and the adjacent connection between teeth become loose, which will easily lead to food embedding and occlusion disorder, and then lead to caries and periodontal disease of the remaining teeth, and even temporomandibular joint disorder disease. Therefore, teeth should be inserted in time after missing teeth.