You have asked a very common question. However, it is absolutely impossible to give you any kind of cost estimate based on a question without any kind of information.
Cost depends on the complexity of your case, the procedures needed and the level of work that you want to receive. The best advise that I can give you is to go and see a specialist called a Prosthodontist, who is the expert in cosmetic, reconstructive, and implant dentistry. Get a proper consultation from the expert and approximate cost. At that point, you can start making decisions intelligently about the scope of work you might require and the specialists who need to be involved in your treatment.
You can readily locate a Prosthodontist in New York by a simple search.