Missing teeth are important, and the dangers of missing teeth are as follows: Firstly, missing teeth in the elderly will definitely affect their digestive function, thus causing malnutrition and so on. Secondly, if a tooth is missing, without early restoration, it will lead to a change of upper and lower teeth or left and right teeth. Thirdly, if a lot of teeth are missing and not actively restored, the impact on its aesthetics is also a very important aspect. Fourthly, the psychological impact on the missing teeth is relatively large, and the social impact on the missing teeth is also relatively large. Therefore, after a tooth is missing, it should be restored as soon as possible so as to stop the effects of these aspects.