Enrollment interval for primary advantages. The preliminary enrollment for the basic dental benefits described in paragraph of this section shall be for a interval of 24 months adopted by month-to-month enrollment so long as the enrollee stays eligible and chooses to proceed enrollment. An enrollee’s disenrollment from the TRDP at any time for any reason, together with termination for failure to pay premiums, is subject to a lockout interval of 12 months. After any lockout interval, eligible people may elect to reenroll and are topic to a new initial enrollment period. The enrollment periods and conditions stipulated in this paragraph apply solely to the essential benefit coverage described in paragraph of this part. Effective with the implementation of an enhanced benefit program, new enrollments for basic coverage will stop.