If you have any questions or concerns about the Cigna Dental HMO, call a Customer Service representative who can explain your benefits or help with matters regarding your dental office. For assistance with transfers, specialty referrals, eligibility, second opinions, emergencies, covered services, plan benefits, ID cards, location of dental offices, conversion coverage or other matters, call Customer Service at 1 (800) Cigna24 (1 (800) 244-6224). If you are hearing impaired, call the state TTY toll-free relay service in your local telephone directory.