DANB Certified Dental Assistant (CDA) Practice Test

A tooth that has come out completely due to trauma or injury is classified as an avulsed tooth. This term specifically refers to a situation where a tooth is knocked entirely out of its socket, typically as a result of trauma. The relevance of understanding this classification is critical in dental practice because an avulsed tooth may have a chance of being successfully re-implanted if proper procedures are followed quickly.

In contrast, an impacted tooth refers to one that is unable to emerge fully through the gums due to blockage, often by other teeth. A retained tooth is one that remains in the dental arch but is not functioning, while a periodontally lost tooth indicates tooth loss due to periodontal disease, where the supporting structures fail. Thus, recognizing avulsion as the specific condition helps dental professionals to respond appropriately in emergency situations.