Several weeks ago, I started getting sensitivity at the gumline of tooth #3 (old crown) and #4 (crown is about 3 years old). They are not sensitive to cold or hot but the gums and the crown itself become really sensitive whenever I eat something (food touches the gumline) but I can brush and floss those teeth with no problem.
I think the sensitivity started 2 months after I switched to Sonicare toothbrush. Sonicare toothbrush is too strong for me but it makes my teeth really clean. I stopped using the Sonicare toothbrush but the sensitivity continues even with sensodyne toothpaste.
My dentist said the crown are still good and don't know why it would be sensitive.
Should I see a periodontist?
Thank you in advance for any help.