The GI, or digestive, tract extends from mouth to anus (see the image below). The division of the GI tract into upper and lower is a matter of some confusion and debate.
Dental PPO insurance plans, also known as dental preferred provider organizations or DPPOs, are a popular dental insurance option due to their flexibility in allowing insured members to choose dentists and dental specialists.
Dental PPO Plans. Dental PPO (Preferred Provider Organization) plans offer a network feature and usually offer a balance between lower costs and dentist choice. PPO dentists participate in the network thereby agreeing to accept contracted fees as payment in full rather than their usual fee for patients with the PPO.