Sophie, Tymlos is the best medication to be taking while having tooth repair, especially implants.
I'm on Forteo the the drug similar to Tymlos. I had two teeth extracted three weeks ago and the orthodontist espressed surprise at the speed of my recovery and the health of the implants. The parathyroid drugs Forteo and Tymlos are the only osteoporosis medications that don't have a warning for osteonecrosis of the jaw with invasive dental work. They are also the only osteoporosis medication that are given to heal osteonecrosis because the actually carry away damaged bone.
While we have do all of the things like exercise and supplements and diet to help our bones, I'm skeptical that we can regain much lost bone without the medication. But you really have to look carefully and make that call for yourself. You might look at Kathleen1314's posts. She almost has me convinced because of her own results with strontium and because of her research.
Cheers to your Rheumatologist for realizing that you don't need the steroid and probably never had PMR. I'd trust her. Anyway I think two years of Tymlos and getting those teeth out of the way is the very best bet. Your doctor may prove more flexible about the Fosamax after the two year mark. Mine did but he was threatening two years of Reclast. Now I'm finishing a third year of Forteo. I'd want to stay on Tymlos for six month before going after those implants.