Doctor, My front upper teeth was half broken 10 years before, after that I went yo the doctor and 6 years before Dr. Removed my that teeth which as that teeth was getting black. Then Dr. Replaced that teeth with artificial teeth giving it support of two side teeth. He drilled my side teeth and then supported my artificial teeth with caps which r now fixed permanent. Now my upper three teeth and gums are getting black and also give bad smell. Its been happening me since 5-6 years back but I thought it might be because it is newly replaced but its still the same problem and everytime people asks me about my blackening of teeth. I also do not have visited any dentist since then. So what should I do please suggest. I also want to replace teeth with a new one, can it be possible?