Periodontics: Instrumentation and Assist · CDA

What is the main difference between a scaler and a curette in periodontal instrumentation?

  1. Scalers have rounded tips while curettes have sharply pointed working tips
  2. Scalers are used supragingivally; curettes are safe subgingivally
  3. Curettes are powered mechanical devices while scalers are entirely manual
  4. Scalers are used to polish teeth while curettes only remove soft plaque
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Correct answer: Scalers are used supragingivally; curettes are safe subgingivally

Scalers typically have triangular cross-section with pointed tips and are meant for supragingival calculus removal. Curettes have a rounded back and toe, making them suitable for subgingival scaling and root planing without damaging soft tissue.

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