Littleton Dentist - Mark P. Cavanaugh, D.M.D in Littleton CO, practice a full scope of general and cosmetic dentistry with expertise ranging from porcelain veneers to dental implants, crowns and bridges. Dr. Cavanaugh can now correct a wide variety of so-called permanent cosmetic dental problems, and can literally redesign your smile. New patients are welcome! General & Cosmetic. Dentistry can give you a smile you're happy to show off. Modern cosmetic dentistry techniques make it easier than ever for you to have a bright and beautiful smile. Our dental hygiene staff of registered dental hygienist RHD can keep your teeth clean and healthy.