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.
Â¹ The Cigna Dental PPO is underwritten or administered by Connecticut Gene ral Life Insurance Company or Cigna Health and Life Insurance Company with network. management services provided by Cigna Dental Health, Inc., and certain of its operating subsidiaries. In Texas, the Dental PPO product is referred to as the Cigna Dental. Choice Plan. Cigna is a registered service mark, and the Tree of Life logo and âCigna Dentalâ are registered service marks of Cigna Intellectual Property, Inc., licensed for. use by Cigna Corporation and its operating subsidiaries.