It's a yaoi manga: there is a guy with the perfect set of teeth but he gets a cavity, the dentist has a teeth fetish.
This one? http://mangafox.me/manga/haisha_nante_kirai_da/
Sorry for mangafox link. It's just that all my bookmarks are there.
http://www.mangago.me/read-manga/haisha_nante_kirai_da/
Yes, it is! Thank you so much!
It's a yaoi manga: there is a guy with the perfect set of teeth but he gets a cavity, the dentist has a teeth fetish.