Which clinical factor MOST strongly determines whether coronal polishing is indicated?

• A. Presence of extrinsic stain & plaque of assessment
• B. Patient age
• C. Time since last cleaning
• D. Tooth eruption status

Answer: (A)

The main factor that guides whether coronal polishing is indicated is the presence of extrinsic stain and soft plaque on the coronal surfaces. When these are present, polishing can effectively remove stains and smooth the tooth surface, improving appearance and biofilm management. If there is no visible extrinsic stain or plaque, polishing offers little benefit and can pose a risk of unnecessary enamel wear or abrasion. Patient age, time since the last cleaning, or tooth eruption status do not by themselves determine the need for polishing; they may affect access or scheduling, but they don’t dictate whether polishing is indicated.