After taking Anastrozole for only 7 months I have lost 2 (two) teeth after a routine dental cleaning. The #4 tooth on the upper right side split well below the gum line and had to be removed by an oral surgeon on December 13th. I am now well into a dental implant, but I was only able to have it at all because I did not take any biophosphanates (even though I was prescribed one by my endocrinologist, I didn't take it.) I asked for the best oral surgeon (and dentist) in town (Austin, Tx) and the oral surgeon okayed going ahead with the dental implant, as long as I had not had any of the "treatments" for osteoporosis (I am currently borderline at -2.2T). I go back on April 23rd for the "twist test" which will determine if the tooth cavity is healed enough to go forward. Otherwise, I'm completely frightened of any routine cleanings from here on out, given what has happened to me after the November 16, 2023 cleaning, which led to the #4 tooth checking out, just like the next-to-last molar on the bottom left did earlier. (That time, I had to declare myself a "dental emergency" because of the huge abcess that formed and had a root canal and it happened during the pandemic, so it was pretty grim.) I don't know whether the first tooth can be blamed on Anastrozole, but my old amalgam fillings that have weakened my enamel certainly deserve some of the blame and my age (78) is a factor.