The TRICARE Dental Plan (TDP) is a comprehensive dental plan available to family members of active duty Uniformed Services personnel. Unlike TRICARE healthcare, the service member is required to pay a monthly premium for family members. If you have questions regarding TDP, need to locate a participating dentist or need an enrollment packet, call United Concordia at 1-800-866-8499 (or 1-800-891-1854 for the Hearing Impaired) or visit their web site.