| Abbreviation | Definition |
|---|---|
| MDFC | Medical Dental Financial Corporation |
| MDH | Master of Dental Hygiene |
| MDHS | Medicine Dentistry and Health Sciences |
| MDJW | Medical Dental Job Workers |
| MDLA | Midwest Dental Laboratory Association |
| MDP | Mobile Dental Photography |
| MDPB | Medical and Dental Professions Board |
| MDS | Massachusetts Dental Society |
| MDS | Master of Dental Science |
| MDSA | Malaysian Dental Students Association |
| MDSA | Muslim Dental Student Association |
| MDSG | Medical Dental Student Government |
| MDTA | Minnesota Dental Therapy Association |
| MFDC | Mechanicsville Free Dental Clinic |
| MFDS | Membership of the Faculty of Dental Surgery |
| MGDS | Membership in General Dental Surgery |
| MICD | Minimally Invasive Cosmetic Dentistry |
| MJDF | Membership of the Joint Dental Faculties |
| MMGD | Mid Michigan Gentle Dental |
| MNTF | Medlem av Den Norske Tannlegeforening (Norwegian: Member of the Norwegian Dental Association) |