Cleaning vs Polishing: What Actually Happens at Your Hygiene Visit

Scaling is not polishing. Polishing is not whitening. Here is what each step at a hygiene visit actually does — and what it cannot do.

A patient sat down last Thursday and asked me to skip the scaling because she had already had a polish at home with a kit she ordered online. She had spent AED 280 on a rotating cup and a tube of paste. She still had calculus the thickness of a fingernail behind her lower incisors. This is the confusion I want to clear up. Cleaning is not polishing. They are different procedures, with different tools, and they do different things. What scaling actually removes Scaling — the part of a hygiene visit that requires an instrument — removes calculus and biofilm from tooth surfaces above and below the gum line. Calculus is mineralised plaque. Once it has hardened onto enamel or cementum, no brushing, mouthwash, or polishing paste will shift it. It needs to be physically broken off. I use an ultrasonic scaler with a fine tip at the gum margin and inside shallow pockets, followed by hand instruments — Gracey curettes — for any residual deposit, particularly on the lingual surfaces of the lower incisors and the distal of the upper second molars. Those are the two places I find calculus on almost every adult patient who has not been to a hygienist in over a year. The Cochrane systematic review on routine scaling and polishing, updated in 2018, found that regular scaling reduces gingival inflammation and probing depths in patients with chronic gingivitis. It does not reverse periodontitis on its own, but it is the foundation that everything else sits on. What polishing actually does Polishing is what happens after scaling. A rubber cup with a low-abrasivity prophylaxis paste is used to smooth the tooth surface and remove residual extrinsic stain — coffee, tea, smoking, strong spice pigments. It is cosmetic. It is not a deep clean. And it cannot remove calculus. Polishing should be selective, not whole-mouth on every visit. Pasted polishing on healthy enamel removes a microscopically thin layer of the outer surface. Done weekly it would wear the tooth. Done once or twice a year on stained surfaces only, it is fine. For heavy extrinsic stain we use air-polishing with a low-abrasivity erythritol powder, which is gentler than traditional sodium bicarbonate and safe on most exposed root surfaces — though I avoid it on patients with respiratory disease or sodium-restricted diets. What polishing is not Polishing is not whitening. Whitening uses carbamide peroxide or hydrogen…

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