DANB General Chairside Practice Test

What type of decay is especially prominent in older adults who have experienced gingival recession?

1. Cervical decay

2. Root decay

3. Incisal decay

4. Coronal decay

The correct answer is: Cervical decay

Root decay is particularly common in older adults who have experienced gingival recession. As the gums recede, the root surfaces of the teeth become exposed. These root surfaces do not have the same protective enamel that crowns possess, making them more susceptible to decay. Additionally, the structure of root surfaces is different; they contain cementum, which is softer than enamel and more vulnerable to the effects of bacteria and acids. Cervical decay, also known as root caries, indicates decay that occurs specifically at the cervical margin, where the tooth and gum meet. This area is particularly affected when gingival recession occurs, as the exposed root surface becomes more prone to decay. Incisal decay typically affects the biting edges of anterior teeth, while coronal decay refers to decay occurring on the crowns of teeth, typically above the gum line and not directly associated with gingival recession. Therefore, root decay is the most relevant type of decay in this context due to the specific conditions associated with gingival recession in older adults.