Delta Dental PPO is one of our three contracted national network based programs. Participating dentists agree to fee schedules as payment in full. These PPO schedules provide deeper discounts that result in savings to the group and enrollees. As with all of the Delta Dental networks, dentists agree to processing policies and are prohibited from billing and collecting fees in excess of the agreed upon schedule. This product allows enrollees to visit any dentist but offers additional savings when visiting a PPO network dentist.