Dental Assistant Practice Exam

Fractured teeth due to trauma are primarily characterized by which symptom?

1. Discoloration

2. Persistent bad breath

3. Pain from exposed dentin

4. Loose gums

The correct answer is: Pain from exposed dentin

Fractured teeth from trauma commonly exhibit pain from exposed dentin as a primary symptom. When a tooth is fractured, especially if it involves the enamel and extends into the dentin, the inner layer of the tooth becomes exposed to external stimuli. This can lead to sensitivity or pain due to the exposed nerve endings in the dentin, which are more sensitive than enamel. This pain can be triggered by various factors such as temperature changes (hot or cold), chewing pressure, or even airflow. Thus, the presence of pain directly correlates with the degree and location of the fracture, making it a significant symptom to identify when assessing fractured teeth. Other symptoms, such as discoloration, might occur over time due to the pulp being compromised or changes in the tooth's structure, while persistent bad breath typically indicates issues related to gums or underlying dental infections, rather than a direct consequence of a fractured tooth. Loose gums may relate to periodontal issues rather than fractures. Therefore, pain due to exposed dentin is a clear and immediate consequence of a tooth fracture, making it the most indicative symptom in this context.