The adverse effects of tooth loss are as follows: 1, the loss of chewing function, the absence of front teeth affects the cutting of food, the absence of back teeth affects the grinding of food, the missing teeth partially reduce the chewing function, the more teeth missing the greater the impact or even cause complete loss of chewing function; 2, auxiliary pronunciation dysfunction, the absence of front teeth leads to labiodental sounds, dentition and lingual-dental sounds of pronunciation; 3, aesthetic impact, the absence of individual front teeth Opening the mouth to expose the gap is not beautiful, multiple missing front teeth in addition to the gap, the lip side of the tissue due to the support of the teeth and sunken, skin wrinkles increase, multiple missing front and back teeth lead to loss of occlusal function support, the height of the lower 1/3 of the face becomes shorter, the face is older; 4, the impact on the oral and jaw system, long-term missing teeth not restored in a timely manner, will lead to the adjacent missing teeth gap teeth to the gap tilt shift, and the gap between the adjacent teeth, the gap at the gap No occlusal contact of the opposite jaw teeth will elongate, resulting in food embedding occlusion interference periodontal tissue lesions, may also lead to long-term lateral chewing, facial left and right asymmetry, mostly posterior teeth missing long-term unrepaired occlusal function, resulting in disorders of the occlusal relationship, loss of posterior teeth occlusal support, reduced vertical distance, resulting in disorders of the temporomandibular joint; 5, the impact on systemic health, masticatory dysfunction will affect the gastrointestinal tract digestion The absorption of gastrointestinal function and intake, the social life of pronunciation and aesthetic dysfunction, and even lead to mental and psychological disorders. Therefore, dental defects should be repaired in a timely manner to avoid the above problems, which may affect life and the whole body.