| DDH | developmental dysplasia of the hip; Diploma in Dental Health; dissociated double hypertropia |
|---|---|
| DDM | Diploma in Dermatological Medicine; Doctor in Dental Medicine; Dyke-Davidoff-Masson [syndrome] |
| DDO | Diploma in Dental Orthopaedics |
| DDPA | Delta Dental Plans Association |
| DDSc | Doctor of Dental Science |