Can dental hygienists perform subgingival scaling on patients who are not classified as periodontal patients?

• A. Yes, they may perform limited subgingival scaling, though it remains a coronal prophylaxis.
• B. No, subgingival scaling is only for periodontal patients.
• C. Yes, but only with a dentist's direct supervision at all times.
• D. No, it's prohibited by guidelines.

Answer: (A)

Scope of practice for dental hygienists and how limited subgingival instrumentation fits into prophylaxis. In patients who aren’t diagnosed with periodontal disease, a coronal prophylaxis is the standard preventive cleaning that focuses on removing plaque and calculus from tooth surfaces above the gum line and a small amount near the margin. Some guidelines allow a limited amount of subgingival scaling as part of this preventive visit, but it is still considered prophylaxis because it does not involve full periodontal therapy. The emphasis is on controlling inflammation and maintaining health without performing extensive root debridement.

This approach makes sense because the goal is to prevent progression and detect issues early, not to treat established periodontitis. If deeper pockets or active periodontal disease are present, the care would shift to a periodontal treatment plan, typically led by a dentist or periodontist. Practice rules can vary by jurisdiction, but the idea behind the option is that a hygienist may perform a restricted, limited subgingival cleaning within the preventive visit, keeping it within coronal prophylaxis rather than full periodontal therapy.