HOSA Dental Terminology Practice

What does the Cervical Line mark on a tooth?

1. Area where the gum and tooth meet

2. Line formed by the junction of enamel and cementum

3. Boundary for tooth sensitivity

4. Top edge of the tooth root

The correct answer is: Line formed by the junction of enamel and cementum

The Cervical Line marks the junction where the enamel of the tooth meets the cementum, which is the part of the tooth that covers the root. This is a critical area as it signifies the transition from the visible part of the tooth above the gum line (the crown) to the part that is embedded in the gums (the root). The integrity of this line is important for dental health, as it can be an indicator of underlying conditions such as gum disease or tooth erosion. Understanding this marking helps dental professionals assess the health of the tooth and plan appropriate treatments. The other options refer to different anatomical features or concepts. For instance, the area where the gum and tooth meet corresponds more closely to the gingival margin, while tooth sensitivity can be influenced by various factors not limited to a specific boundary. The top edge of the tooth root isn't defined by the Cervical Line, making the distinction crucial for clear dental terminology and understanding tooth anatomy.