Various precautions should be considered to have successful teeth cleaning and polishing. If you have gum recession, the cementum will be exposed; the part is more fragile than the enamel part. The dentist should use a mild paste to prevent tooth sensitivity.  If you have dental problems like dents, receding gums, sensitivity, untreated cavities, exposed roots, or infected gums, the issues should be fixed before cleaning and polishing.