Your family deserves dental care that is comfortable, personal and performed by dentists that are experts in Pediatric, Cosmetic and Restorative Your family deserves dental care that is comfortable, personal and performed by dentists that are experts in Pediatric, Cosmetic and Restorative Dentistry. Cornerstone Dental in Polk City, IA offers you a dental practice that cares for your entire family. You deserve specialized, personal service and a dental team that stays up-to-date on the newest in dental technology and treatments. Whether you desire a routine cleaning and check up, or a smile transformation with Cosmetic Dentistry, the Cornerstone Dental team takes the time to listen to your needs and plan the right treatment for you.