What instrument is used to examine tooth surfaces for decay?

• A. Scalpel
• B. Explorer
• C. Mirrors
• D. Forceps

Answer: (B)

The explorer is a specialized dental instrument designed specifically for examining tooth surfaces for decay. It has a pointed or hooked end that allows the dentist or hygienist to detect abnormalities such as soft spots or cavities on the enamel, as well as to check for plaque and calculus buildup. The tactile feedback provided by the explorer helps dental professionals assess the integrity of the tooth structure, which is essential for identifying areas that may need treatment.

The other instruments listed serve different purposes in dental practice. A scalpel is generally used for cutting soft tissues, mirrors are primarily used for visualization and to illuminate hard-to-see areas in the mouth, and forceps are designed to grasp or manipulate tissues and objects, such as in tooth extractions. Each of these tools has a specific role, but none are intended for the same diagnostic function as the explorer.