My gums are receding on all of my teeth for no apparent reason. The roots on most of my teeth are already exposed. My are red and sensitive. I doubt it is caused by a because I have a good oral hygiene. I brush my teeth more than three times a day, I floss several times a day and I go to the dentist for a routine check-up every 6 months. It's kind of worrying me and I was wondering what can I do about this.
Thank you in advance for your replies!