Flare, sweep, lift, floss. Every technique question in Domain III is some version of these four moves — and the two sins they prevent: heat and over-abrasion.
The core technique~8 min★ Never park the cup — seconds per tooth, then lift
1What & why
Light, moving, brief.
The polishing stroke is a set of small disciplines that all serve one goal: remove stain without heating or abrading the tooth. Fill the cup with paste, flare it gently at the gingival margin, keep it moving, and lift.
2The technique, step by step
Flare, sweep, lift, floss.
The moveThe standard
Cup placement
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Just at/below the gingival margin, then sweep awaythe cup edge flares slightly under the margin to reach stain at the gumline
Cup flareLight pressure flexes the cup rim so its edge adapts to the tooth.
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Enough to flex the rim — no moreheavy flattening = pressure = heat + abrasion
🔄Stroke pattern
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Sweeping, overlapping strokes toward the incisal/occlusalcover every surface systematically; keep the cup moving
⏱️Contact time
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Brief — a few seconds per tooth, intermittentlift, refill with paste, return; dwelling builds frictional heat
Finish
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Floss all contacts, then rinse thoroughlyfloss carries paste through proximals and clears debris
Flare, sweep, lift, floss. Light pressure flexes the rim; strokes run gingival → incisal and overlap; the cup lifts after a few seconds rather than dwelling; floss finishes every contact — then rinse thoroughly.
3The sequence
Any order — as long as it’s an order.
Work to a systematic sequence — for example, start on the most distal tooth of the upper right quadrant, polish facials around the arch to the upper left, then linguals back; repeat below. The exam doesn't demand one sacred order; it demands that you have one, so no surface is missed and no tooth is done twice.
4Make it stick
Paint the fence — wet brush, light hand, keep it moving.
A painter never mashes a dry brush into one plank. Keep the cup loaded with moist paste, use light, overlapping sweeps, and never park on a tooth — practical examiners literally warn against staying more than a few seconds in one spot.
5Beat the exam
"How much pressure on the cup?"→light — just enough to slightly flare the rim
"How long on each tooth?"→a few seconds, intermittent — lift and move on
"Why keep the cup filled with paste?"→paste does the polishing and its moisture reduces frictional heat
"What finishes the procedure?"→floss every contact, then rinse
"Stroke direction"→sweeping strokes from the gingival third toward the incisal/occlusal
6Check yourself
The rubber cup should be applied to the tooth with:
Light, intermittent pressure with a slight flare. Heavy or continuous pressure builds frictional heat and abrades enamel — the two cardinal polishing errors.
6Check yourself
After all surfaces are polished, the NEXT step is to:
Floss and rinse. The cup can’t reach between contacts — floss finishes the proximals and clears the paste. Then the mouth is rinsed thoroughly.
Recap
The whole thing in 5 lines.
✓Cup filled with moist paste; edge flared slightly at the gingival margin.
✓Light, intermittent pressure; sweeping overlapping strokes toward the occlusal/incisal.
✓Seconds per tooth — lift, refill, move; dwelling = heat.
✓Follow a systematic sequence; miss nothing, repeat nothing.
✓Finish: floss every contact, rinse thoroughly.
Light hand, moving cup, wet paste. Everything else is detail.
But should you polish every tooth at all? Next: the modern doctrine of selective polishing.
Cup placement
Cup flareLight pressure flexes the cup rim so its edge adapts to the tooth.
Finish
