Crowns that smell bad should be examined in the hospital and replaced with a new one.
Crown odor is mostly due to the crown and the abutment tooth is not close or crown broken, food residues left in the broken place, oral hygiene is poor, after a period of time to produce a bad smell, at this time you should go to the hospital by the doctor after examination, remove the old restoration to deal with the abutment tooth situation after the new restoration body repair.
Crown odor may be due to the edge of the food into the crown is not close to lead to food residue long-term retention in the crown will have a bad smell, can also lead to crown loosening off, or fractured abutment teeth, this time should be removed from the old crowns, clean up the abutment teeth, check the abutment teeth form to ensure that the retention requirements, and remodeling and remodeling of the crowns.
Crown odor can also be a crown broken food residue retention in the broken place, the same is the removal of the old restorations to make the treatment method.
Normally, you should also pay more attention to oral hygiene, to ensure that the oral cavity clean.