I would say for the past year I have had a very sensitive part of one of my teeth right at the gum line and the tooth. Where it is sensitive I can run my finger from the main part of my tooth up to the sensitive part and it seems to drop down. When it drops down it is very sensitive and almost makes me want to cringe. Recently another tooth has done the same. The tooth seems to drop down right before the gum line and then becomes very sensitive. My original tooth has started to get worse in the past month or two. I was just wondering if anyone could give me any recomondations on what I can do or what my options are. Thank you for your time in this matter. I hope to hear from you soon.