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.
These insurance plans, also known as capitation plans, operate like their medical HMO cousins. This type of dental plan provides a comprehensive dental care to enrolled patients through designated provider office (dentist). A Dental Health Maintenance Organization (DHMO) is a common example of a capitation plan.