How do i contact sun life customer service? Mail: Sun Life SC 2350 Wellesley Hills, MA 02481 Telephone: 1-800-247-6875 E-mail: [email protected]. Prepaid Dental Claims 800-443-2995 All Other Dental Claims 800-442-7742 Vision Claims 800-877-7195Why sun life dental insurance? Dental insurance Sun Life dental plans promote better oral health which can lead to better overall health. Our flexible plan options allow employers and members to choose a plan that meets their needs.How do i contact sun dental customer service? Simply give us a call to talk to a friendly Sun Dental Customer Service Representative or fill out the form below with your information and we will contact you within 48 hours.What are sunsun lifes dental networks? Sun Life's dental networks include dentists contracted with Dental Health Alliance, L.L.C.® (D.H.A.®) and dentists under access arrangements with other dental networks. **This is not an Insurance Plan.