HOSA Dental Terminology Practice

In dental terminology, what does the occlusal third refer to?

1. The area closest to the gum line

2. The third of the surface closest to the roots

3. The third of the surface closest to the occlusal surface

4. The midsection of the tooth

The correct answer is: The third of the surface closest to the occlusal surface

The term "occlusal third" refers specifically to the area of a tooth that is nearest to the occlusal surface, which is the top surface of the tooth where chewing occurs. This area plays a crucial role in the functionality of a tooth, particularly for molars and premolars that are involved in grinding food. Understanding the different thirds of a tooth, such as the occlusal third, is essential for professional dental practices, including procedures related to cavities, restorations, and orthodontics. In this context, distinguishing between the occlusal third and other areas of a tooth, such as the cervical third, which is closer to the gum line, or the apical third, which is nearest to the roots, is vital for accurate communication in dentistry and for effective treatment planning.