Bass Brushing Technique — NDEB AFK MCQ
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Correct answer: C — Gingival sulcus and cervical third of the tooth
The Bass (sulcular) technique directs soft nylon bristles at a 45° angle into the gingival sulcus and uses a gentle vibratory (back-and-forth) motion to disrupt subgingival plaque at the gingival margin and within the shallow sulcus. It is the most widely recommended brushing technique for patients with periodontal disease because it effectively cleans the sulcular area (where gingivitis and periodontitis begin). It does not effectively clean occlusal or broad facial surfaces — a rolling motion can be added (modified Bass) for these areas.
Reference: Newman – Newman and Carranza's Clinical Periodontology, 13th ed., 2019