Page Content The Dallas College Dental Hygiene Center (formerly El Centro College Mockingbird) houses Dental Hygiene classes and the Dental Hygiene Clinic.Location Highlights:Dental Hygiene programDental Hygiene ClinicFree parking Learn More About the Dental Hygiene Program Where We Are Dental Hygiene Center 1250 W. Mockingbird LaneDallas, TX 75247 214-860-2301 View in Google Maps Plan your route with DART