Which instrument is specifically used to probe for decay?

The #23 explorer is specifically designed for probing dental decay due to its unique features. This instrument has a pointed tip that allows the dentist to detect soft areas on the tooth surface, which are indicative of caries (tooth decay). The sharp point can easily access pits and fissures on the enamel, providing an effective mechanism for identifying decayed tissue that may not be visible to the naked eye.

This instrument is an essential tool in preventive and restorative dentistry, as early detection of decay is crucial for effective treatment. The ability to feel the texture and structure of the tooth allows the dentist to determine the depth and extent of the decay, enabling a more accurate diagnosis and treatment plan.

In contrast, other instruments listed serve different specific purposes. A dental drill is primarily used for removing decayed tooth material and preparing cavities for filling, rather than probing for decay. A periodontal probe is designed for measuring the depth of periodontal pockets around teeth, focusing on gum health rather than decay detection. A scalpel is a surgical instrument used for incisions and soft tissue procedures, which is unrelated to the identification of tooth decay.