Prepare for the American Board of Pediatric Dentistry Oral Boards. Utilize flashcards and multiple-choice questions with hints and explanations to ace your exam!

Multiple Choice

In extrusive luxation, which clinical features are typically observed?

Extrusive luxation happens when a tooth is displaced out of its socket along the long axis. Clinically, the tooth often appears elongated because it is pulled coronally, and it is markedly mobile due to injury to the periodontal ligament and surrounding socket. Radiographs typically show an increased width of the periodontal ligament space around the root, especially apically, from stretching of the ligament fibers. This combination of crown elongation, excess mobility, and apical widening of the PDL space is characteristic of this injury. The other scenarios describe different trauma patterns: a shorter tooth with reduced mobility aligns more with intrusion; a buccal displacement without PDL changes fits a lateral luxation pattern without PDL disturbance; and no change in PDL space or mobility would indicate no luxation.

Extrusive luxation happens when a tooth is displaced out of its socket along the long axis. Clinically, the tooth often appears elongated because it is pulled coronally, and it is markedly mobile due to injury to the periodontal ligament and surrounding socket. Radiographs typically show an increased width of the periodontal ligament space around the root, especially apically, from stretching of the ligament fibers. This combination of crown elongation, excess mobility, and apical widening of the PDL space is characteristic of this injury. The other scenarios describe different trauma patterns: a shorter tooth with reduced mobility aligns more with intrusion; a buccal displacement without PDL changes fits a lateral luxation pattern without PDL disturbance; and no change in PDL space or mobility would indicate no luxation.