Smaller teeth are required for dental treatments such as fixed bridges, crown restorations, or orthodontics. The following risks may exist after grinding smaller teeth: 1) teeth may be more sensitive; 2) toothache and gum inflammation may occur after grinding; 3) tooth function will change; 4) tooth strength will become weaker. Therefore, it is recommended not to grind the teeth as much as possible, but if it is necessary to grind the teeth for treatment due to the need of treatment, in the case that the benefits outweigh the disadvantages, it is also possible to grind the teeth, otherwise, the aesthetics may be affected by the large teeth.