Smoking is harmful to the teeth mainly for making the teeth yellow, causing dental caries, etc. Smoking can also jeopardize the periodontal health, causing periodontitis, etc. Therefore, you should quit smoking as soon as possible. Therefore, you should quit smoking as soon as possible. 1. Long-term smoking will lead to the surface of the teeth adhering to the smoke stains, the teeth color gradually become yellow and black, accelerate the formation of plaque on the surface of the teeth, more likely to produce dental caries and other dental problems. 2. In addition, smoking has a greater harm to the periodontal tissues, can cause gingivitis, periodontal disease, and then produce gum recession, alveolar bone recession, loose teeth or even fall off and other phenomena. Therefore, smokers should quit smoking as soon as possible. If there are dental problems, you should go to the hospital in time for appropriate treatment.