| Word | Meaning |
|---|---|
| Macrodontia | Teeth that are larger than normal. |
| Malignant | Cancerous. |
| Malocclusion | The abnormal or irregular alignment of teeth and/or jaws. |
| Mandible | The lower jaw. |
| Maryland Bridge | A bridge that is bonded onto natural untreated supporting teeth. It is also used as a space maintainer for orthodontics. |
| Mastication | Chewing. |
| Maxilla | The upper jaw. |
| Maxillo-Facial Surgeon | A dental specialist treating problems of the jaws, teeth and facial structures. |
| Medication | The medical or dental treatment with drugs or remedies. |
| Microabrasion Technique | The use of hydrochloric acid and an abrasive material for tooth whitening. |
| Milk Teeth | Also known as baby, deciduous, first teeth or primary teeth. |
| Mixed Dentition | The presence in the mouth of some erupted baby and permanent teeth. The developmental stage during which both baby and permanent teeth are present in the mouth (approximately 6 to 12 years of age). |
| Model (dental) | Popular name for a cast of a tooth or teeth, usually in plaster or similar material. |
| Molar Teeth | The large back teeth used for chewing. |
| Mottling | The surface marking or staining of teeth. |
| Mouthguard | A plastic flexible shield placed in the mouth to protect the teeth, gums and jaws against injury. Usually worn when playing contact sports. |
| Mucous Membrane | The soft tissue lining of the mouth. |