Dentist robbery or Real deal?

As we all know, most children do not like to brush their teeth. They'll do anything they can to get out of it. My kids love weekends and summer because they usually fall asleep before they do their teeth. Of course, I make them brush them the next morning when they get up and boy do they get mad at me! The only one so far who likes to do his teeth is Jacob. He's always in the bathroom brushing or flossing. Okay, so he's not the greatest at it, but it's a start!! Anyway, yesterday, we took AJ to the pediatrics dentist because our dentist said that he had quite a few cavities and some were so bad that he might have to be sedated when they fix them and since he doesn't do that there, recommended us to this children's dentist. She was in there going over with us all that needs to be done. Talking about sealants, crowns, fillings and even a "baby" root canal, totalling up to over $2,700!!! Now I ask you, why would you do all that to baby teeth that are going to fall out anyway? And to make matters worse, she doesn't take insurance so this would all come out of pocket until the insurance company reimbursed us maybe a quarter of that amount. Is all that really necessary????