Caries is a destructive process of the dental structures and never goes away by itself, it may be that for a period of time derminado be detained, but it is normal that further progress, so the sooner you treat her better. Thus whenever we reduce the risk of problems in that part of life and hope of restoration is multiplied. Keep in mind that the decay does not hurt, when we have pain usually we have to do something besides the filling, such as endodontics (remove the nerve).