Scaling is a procedure which removes the deposits On The Teeth which have accumulated till that date. It does not mean in any way that new deposits of plaque will not form,so meticulous oral hygiene maintenance by the patient after the procedure is equally important. You should discuss the best brushing technique with your dentist so that it can be explained to you on a model or you can search for modified Bass technique on YouTube. You can visit your dentist again to see if any deposits are remaining or there are new subgingival deposits which require another session of cleaning. Regards