I've been on Alendronic Acid for osteoporosis for about 9 months now. Stupidly have only recently found out it can cause problems with your teeth. I have terrible teeth - only about 18 left and a bunch of crowns at the front. Now I'm worrying that everything is going to loosen and/or fall out. Can someone explain to me why there is an issue with teeth and this drug (it's a once a week tablet) and if there are alternatives? And who should I contact - the dentist or the doctor?