Which instrument is commonly used for subgingival debridement?

• A. Scaler
• B. Probe
• C. Curette
• D. Ultrasonic

Answer: (C)

Subgingival debridement is about removing calculus and biofilm from below the gum line and smoothing the root surface to promote healthy attachment. A curette is ideal for this task because its design allows safe, controlled access to subgingival areas. The rounded toe and curved blade with a single working edge let you adapt to the irregular contours of the root and scale along pocket walls without cutting into soft tissue. This precise tactile control is essential for thorough root planing and for minimizing tissue trauma, which is why curettes are the preferred hand instrument for subgingival debridement. Ultrasonic devices can also clean below the gum line, but they’re typically used as an adjunct or for efficiency, whereas curettes provide the classic, reliable method for meticulous subgingival debridement. Scalers are more suited to supra-gingival deposits, and probes are for measurement rather than debridement.