The harm of smoking on the dental surface is not very obvious, long-term smokers will cause a thick layer of dental plaque on the dental surface, thus affecting the aesthetics of the teeth, it is necessary to focus on the fact that smoking can produce greater damage to the periodontium, studies have shown that smokers than non-smokers, the chances of suffering from periodontitis is much higher. The majority of missing teeth in the Chinese elderly are due to periodontitis, which causes the gums to gradually recede, the teeth to gradually loosen and fall out, and finally leads to the loss of teeth, smoking will undoubtedly exacerbate the acceleration of this phenomenon, smoking itself is harmful but not beneficial, it is recommended to quit smoking as soon as possible.