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Periodontics · single question

Oral hygiene instruction (OHI) is part of which phase of periodontal treatment?

  1. Phase 1 — Non-surgical/disease control phase
  2. Phase 4 — Maintenance phase
  3. Phase 0 — Preliminary/emergency phase
  4. Phase 2 — Surgical phase
Show answer and explanation

Correct answer: B. Phase 4 — Maintenance phase

  • A. Phase 1 involves SRP, education, and controlling active disease.
  • B. Correct. While OHI is introduced early in treatment (Phase 1), it is ongoing and is a primary component of PHASE 4 — the Maintenance (Supportive Periodontal Therapy) phase. The maintenance phase includes periodic recall, periodontal exam, prophylaxis, and reinforcement of oral hygiene instruction. When a question asks about a treatment sequence and includes OHI as the answer, maintenance phase is the correct category.
  • C. Phase 0 involves emergency treatment and extraction of hopeless teeth.
  • D. Phase 2 involves surgical reduction of pockets and tissue regeneration.

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