P.,
I have not heard anything about your actual Vet, but I have found that vets are like mechanics.. If you don't have an great one, you pay for things you never knew you "needed".
I am a breeder, and an animal lover, so I am not trying to compare your family pet to the family car... but, it seems that word of mouth is the only way to find a good Vet, as is a good mechanic.
I am sure that your vet covered his tail.. with having you sign something, so you may not have anything to fight. If you want to make for sure, I'd call a lawyer, and simply ask. Maybe all he needs is someone to call him on what he is doing. Most would rather, keep something like that quiet.
As far as using a good vet.. My favorite is Knappenberger Vet in Olathe. It is solely family owned and ran. A dad and 2 adults sons, and the mother and a wife are the receptionist(they are BIG k-state fans)###-###-####.
Another one is Southside Pet Clinic Hospital, in Olathe. They have about 4 vets, young ones, and are very honest too. ###-###-####
I hear there are two other great vets, one in Gardner and one in Spring Hill as well. But I am not familiar with the names.
As far as your almost toothless pup is concerned, My old Tom Cat, Monster (who lost teeth by fighting the neighborhood cats I assumed) was loosing weight, until I switched him to soft can food. (Our vet DID have to pull a couple more teeth on him as well, but he let me know before hand, and talked about the infection chances with me first)
Soft or Can food does make an animal create more "waste" and even smellier and softer-mushier ones too, but Monster was not able to eat dry food any longer, so I did what I could.
One more thing regarding Vet Clinics, if they are associated with a big pet store, such as Petland, they tend to be in it for the money, instead of for the animals.
I an not saying they all are, but when you "purchase" an animal from say, Petland, they tell you who to use as your vet, and even give you a "free Visit" sometimes. Stay away from those... please.
Good luck, and remember he can live years without teeth. Just make sure you keep his fur clean, so he does not have to "chew" at it, and soft food is everywhere. He'll like it more anyhow. It has more flavor, they say.
N.