Teeth are one of the least cherished organs of many people, but they are the “smile representative” of people’s pursuit of beauty. Chen Zhen, director of the Department of Endodontics at the Tianjin Medical University School of Stomatology, said that whether it is from the perspective of dental aesthetics or dental disease, restoration should be based on making the teeth “harmonious”. There are various restorative dentistry methods available, but the choice should be based on your own situation. Silver mercury fillings: The advantage is that they are cheap and wear-resistant. The disadvantage is that it pollutes the environment and cannot be used for front teeth because of its metallic color; because of the shrinkage of silver amalgam, there is no adhesion between it and the teeth, the edge of the filling is not tight, forming micro-leakage, and long-term use may cause worm teeth to occur again at the junction of silver amalgam and teeth, and may cause secondary caries on the adjacent surface of the adjacent teeth, and it is easy to split the filled teeth. Light-curing resin filling: The advantage is that it is close to the color of the tooth and can be used for both front and back teeth. The disadvantage is that due to shrinkage during the process of light curing, it is generally used for the filling of smaller worm teeth. If the cavity of the worm tooth is large or involves the adjacent surface of the tooth, resin fillings are not so suitable in the long run and are prone to breakage and fracture, leading to recurrence of worm teeth or blockage, etc. Inlay restoration: It can restore the shape and function of the tooth very well. Especially for cavities damaged by worm teeth to the adjacent surface of the teeth, because the inlay is made outside the body, the smooth adjacent surface of the produced inlay is not easy to attach biofilm and food residue, which reduces the possibility of secondary caries. High inlays can be used for restoration of large damaged teeth without crown restoration, avoiding the stimulation of gum by crown edge and protecting the health of periodontal tissue.