For cavities that have already formed, it is impossible to brush them away. Cavities, known professionally as dental caries, are caused by bacteria that invade the hard tissues of the tooth and cause damage to the hard tissues. In this case, it is impossible to solve the problem with medication or injections, let alone brushing. The main purpose of brushing is to remove plaque and food debris from the periodontium to make the mouth healthier and the breath fresher, but it does not have any therapeutic effect on caries. To treat caries, you must go to a professional dentist, apply the power system of dentistry, which is the turbo drill, to remove the decayed part of the caries, prepare the appropriate cavity shape, and apply the filling material to fill in the caries is the fundamental way to treat dental caries.