Dental services have come a long way since the days of four-inch Novacaine needles and crude extractions. When you enter the offices of Dr. Robert Cessna, located in the heart Perryopolis, Pennsylvania. You'll find the latest in oral care and smile enhancement at your disposal Teeth whitening, invisible aligners for straighter teeth, needle-free numbing, gum disease treatment, cavity prevention through sealants and much more.