Dental cleaning has both favorable and unfavorable effects on teeth. Scaling can keep your teeth and mouth clean and prevent bacteria from growing, but if you scale your teeth often it is easy to damage your gums and cause unfavorable effects. 1. Scaling refers to the use of scaling instruments to remove stains, plaque and tartar on the gums, in order to delay plaque and tartar redeposition, to achieve the effect of dental cleaning. Regular scaling is conducive to oral cleaning and dental health, effectively preventing the teeth from continuing to turn yellow, but also to avoid bacterial growth and prevent periodontitis. 2. However, if frequent scaling is carried out, it is easy to damage the gums and may also aggravate the condition of periodontal disease, leading to unbearable pain and affecting the daily life of patients. Appropriate scaling is very favorable to teeth, if scaling is too frequent, on the contrary, it is easy to damage the teeth. Therefore, teeth cleaning needs to be carried out under the guidance of a professional dentist, and it is recommended that teeth be cleaned once every six months to a year.