DH had a knee replacement done 6 years ago. It was totally life altering since the bad knee was affecting his balance, his walking, everything. As has already been stated--take the pain meds and be absolutely dedicated to your exercises. Do not sluff off just because it hurts. The payback will be enormous. As to dental, DH still needs to take antibiotics before any major dentistry. Don't know how long that goes on or if our Dr. is just super careful. Good luck! I'll be thinking strong positive good operation thoughts in your direction!