I agree with the other posters about "overcharging" being an opinion. The great thing about being a dentist in America - you can set your own prices! Whether or not someone is willing to pay that price is another story. I hear now and again from patients in my office that "his prices are so much higher than others." But you know what? He can finish a root canal, have a permanent cerec crown on your tooth and have you out the door in 1.5-2 hours. How's that for fast and friendly service? Isn't saving you time and the use of the best technology worth the extra cost? But hey - if you're willing to miss 2-3 days of work to come in for multiple appointment for the same end result and a cheaper price across the street, then so be it. Time is money...
Now, all that being said...if there's more going on than just jacked up prices, such as insurance fraud or inconsistent charges (not everyone is being charge the same for the same procedure, etc.) then THAT is a different story. THAT should be brought to the board's attention or it will never stop.