What can cause sensitivity to cold?
untreated decay that causes the nerve of the tooth to become hypersensitive b) a recently placed deep filling that has not yet settled down c) large metal restorations such as gold or amalgam that conduct the cold temperature to the nerve d) if you have recession of the gums and the root surface is exposed to temperature changes such as cold air or liquids e) clenching or grinding can cause “abfraction” lesions that are visible as grooves on the outside of the tooth where the tooth joins the gum and sometimes these grooves can become very sensitive
