HOSA Dental Terminology Practice

What is meant by internal/external resorption?

1. A type of tooth decay

2. A process caused by odontoclastic action

3. A preventive dental procedure

4. A cosmetic enhancement

The correct answer is: A process caused by odontoclastic action

Internal and external resorption refer to the processes involving the loss of tooth structure and are specifically related to the activity of odontoclasts, which are specialized cells responsible for the resorption of dental hard tissues. Internal resorption occurs when these cells act on the pulp chamber and root canal of a tooth, leading to a breakdown of the dentin and potentially the pulp itself. Conversely, external resorption involves the resorption of the tooth structure from the outside, typically affecting the root surface and surrounding alveolar bone. This phenomenon is generally not associated with tooth decay, preventive dental procedures, or cosmetic enhancements. Instead, it is a biological response that may occur due to factors such as trauma, infection, or orthodontic treatment. Understanding this distinction is crucial for recognizing the conditions that can affect dental health and the underlying mechanisms involved in tooth structure alterations.