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.
Understanding supplemental dental insurance. Supplemental dental insurance is a separate plan that enhances your current dental coverage. An individual or family that needs coverage for a particular procedure not covered by their dental plan may choose to purchase supplemental dental insurance to help manage costs.