The Maryland Dental Hygienists' Association is a constituent of the American Dental Hygienists' Association, the largest national organization representing Registered Dental Hygienists.

MDHA was organized in January 1953 and was chartered by ADHA in January 1954 for the purpose of developing communication and mutual cooperation among Registered Dental Hygienists. MDHA serves to promote and protect the oral health of the general public, increase access to oral health care for underserved populations, and promote the professional growth and interests of its members. Throughout its proud 57-year history, MDHA has been the official representative of Dental Hygiene in the state of Maryland. There are currently nine components of MDHA in Maryland.

We actively participate as volunteers providing dental hygiene services at various community health centers across the state and during Children's Dental Health Month (February) members volunteer in educational projects at local libraries, at health fairs and in numerous elementary and middle schools in Maryland. Donations of toothbrushes and an assortment of other items are sent to various battered women's and children's shelters as well. National Dental Hygiene Month activities vary amongst the state components but usually include dinner meetings featuring prominent area dental speakers providing continuing education courses for members. Registered Dental Hygienist members of MDHA are actively involved throughout the year in activities ranging from civic and community outreach projects, state fairs, oral cancer screenings and walkathons to oral health and prevention-related volunteer activities. Special emphasis is placed on those activities with proceeds ear-marked for charitable organizations. MDHA annually funds the four Bertha Morgan Scholarships for qualified dental hygiene applicants to University of Maryland - Department of Dental Hygiene, Baltimore City Community College, Allegany College of Maryland, and Community College of Baltimore County.