Would it be possible to remove mecury dental fillings and replace with an alternative filling and what would be the approximate cost if possible?

Certainly: Metal dental fillings can be changed to resin or ceramic based restorations. Since fees vary from office to office, the cost will be determined by the dentist who is treating you. That's why you'll need to make an appointment with a local dentist to be examined and receive an estimate.

It's possible: It's possible to remove silver dental fillings and replace them with tooth-colored fillings. Cost will depend on area of country in which you live, extent of the restorative treatment required, skill and training of the practitioner. See your Dentist for an examination, treatment plan, and costs. know that tooth colored fillings don't last as long.