National Dental Assisting Examining Board (NDAEB) Practice Exam

What happens to the periodontal ligament during tooth Luxation?

1. It thickens

2. It partially or totally separates

3. It strengthens

4. It becomes inflamed

The correct answer is: It partially or totally separates

During tooth luxation, the periodontal ligament undergoes significant trauma, which typically results in its partial or total separation from the tooth and the alveolar bone. This occurs due to the sudden and forceful movement of the tooth, which can disrupt the connective fibers that anchor the tooth to the surrounding bone. The extent of this separation can vary depending on the severity of the luxation. Injuries to the periodontal ligament can also lead to changes in the surrounding tissues, but the primary and most immediate effect of luxation is the separation of the ligament from the tooth root. Understanding this process is crucial for dental professionals, as it dictates the management and treatment approach for luxated teeth, including the importance of immediate intervention to preserve the vitality of the tooth and support structures.