rayygun1234, you should wait three months after the infusion for the extraction. I hope it isn't painful to wait.
Reclast stays in your system a very long time, cladding to the bone for years. Your statistical risk of osteonecrosis is small, but it may take longer than usual for the bone to heal. Be sure the orthodontist knows that you have taken two bisphosphonate infusions. They may take extra precautions with oral antibiotic washes for use 48 hours after the extraction.
Be especially careful with after instruction so as not to disturb the blood clot and to secure the fastest healing of the external wound, which takes from two to four weeks. It can take 6 months for the bone to heal. Alert your surgeon to any signs of oral wounds or pain during your recover.
Chances are most likely that you'll be fine.