If it is a regular dental clinic, as well as qualified doctors for scaling, it is still relatively safe. 1. Scaling is very helpful in protecting oral health, it can effectively remove tartar from teeth and make teeth white again, but you need to be careful not to scaling too often. 2. But the quality of dental clinics vary, some of them have very complete qualifications, but some have no qualifications at all, so you should carefully select, choose a large formal qualified dental clinic, as well as qualified doctors for dental scaling, in order to ensure that the effect of up to avoid accidents. To summarize, it is recommended to select a regular dental clinic for scaling, if necessary, or recommended to the dental hospital.