Re: Dentist info accurate?
Seek a second opinion. Your dentist is recommending extensive work and you need to be 100% sure it's necessary. If you suspect that your dentist isn't on the up-and-up, call other dentists in the area and ask for their opinions on your guy. My dentist's receptionist was the one who informed me that my DH's dentist was under indictment for insurance fraud, and was well-known to his competitors for slipshod work (my DH switched to my dentist after that!).
If your dentist is unaware that you can safely drink coffee while breastfeeding, I don't think I'd take his word about bad bacteria somehow coming out in your milk. That sounds like a load of BS to me.
Coolest thing my big girl said recently: "How can you tell the world is moving when you are standing on it?"
Coolest thing my little girl sang recently: "I love dat one-two pupples!"