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.
Participants in the Allied Dental Design plan have access to the Aetna Dental PPO Network. Fidelity Security Life Insurance Company Aetna Dental PPO Network Voluntary use of this network's dentists may help reduce coinsurance costs and eliminate balance billing by the dentist.