Under normal circumstances, it is safer to go to the hospital to clean the teeth, because the hospital has a sense of control department, will from time to time to the stomatology department to check, check the stomatology department in the disinfection and protection measures are perfect, so patients can rest assured to go to the clinic to clean the teeth. In the process of scaling, because a large number of droplets and blood easily dispersed in the air, easy to cause the spread of disease, so patients in the scaling process must choose a regular hospital and dental clinic. If the disinfection is not perfect, may lead to patients in the process of scaling infected with other infectious diseases, so it is not worth it, although scaling is a very simple operation, but for the disinfection of the requirements are very high, so patients must be careful to choose.