Dentists Dr. William O. Roller Jr. and Dr. Amanda J. Johnson of Roanoke Virginia practice a full scope of general and cosmetic dentistry with expertise ranging from porcelain veneers to crowns and bridges. Drs. Roller and Johnson can now correct a wide variety of so-called permanent cosmetic dental problems, and can literally redesign your smile. Our mission is to help patients live healthier lives. We provide a caring, nurturing environment where your comfort and health is of primary importance.