HOSA Dental Terminology Practice

What is the specific function of cementum in dental anatomy?

1. To protect the crown of the tooth

2. To connect the tooth to the jawbone

3. To cover the root of the tooth

4. To aid in sensory function of the tooth

The correct answer is: To cover the root of the tooth

The specific function of cementum in dental anatomy is to cover the root of the tooth. Cementum is a specialized calcified substance that constitutes the outermost layer of the tooth root, playing a crucial role in maintaining dental stability. It acts as a medium for attachment to the periodontal ligaments, which connect the tooth to the jawbone. This connection is essential for sustaining the tooth's position within the dental arch and supporting it during activities like chewing and speaking. While cementum does play a role in anchoring the tooth, it is distinct from the protective functions associated with other structures. For example, enamel protects the crown of the tooth, and the jawbone serves to support the dental structures but does not cover the root itself. Cementum does not participate in sensory functions; rather, that role is primarily associated with the dental pulp and nerves within the tooth. Thus, cementum's primary function is accurately captured as the covering of the tooth root.