HOSA Dental Terminology Practice

Which condition is characterized by a cleft-like defect in cortical bone?

1. Gingival recession

2. Dehisence

3. Periodontal disease

4. Cortical erosion

The correct answer is: Dehisence

Dehiscence is characterized by a cleft-like defect in the cortical bone, making it the correct response. In dental terminology, dehiscence refers specifically to a bone defect that occurs when there is a loss of alveolar bone over the facial aspect of a tooth, often leading to exposure of the root surface. This condition can result from various factors, including trauma, periodontal disease, or anatomical variations, and is often significant in the context of surgical procedures or periodontal health. Understanding the structure impacted by dehiscence helps clinical practice, as the presence of such defects can influence treatment decisions, including the placement of implants or other surgical interventions. The condition is distinct in that it specifically refers to the loss or thinning of bone overlying the tooth in a linear fashion, resembling a cleft or groove. Recognizing this distinction is essential, especially when differentiating it from similar conditions that affect the gums or overall periodontal health but do not specifically describe a bony defect.