How is the 9900 Prestige different from the DiamondClean?

It adds SenseIQ, which senses pressure, motion and coverage up to 100 times per second and adjusts intensity automatically. The DiamondClean has fewer sensors and no adaptive pressure feedback.

Does it really protect gums if I brush too hard?

Yes. When you press too hard it lowers intensity automatically to protect teeth and gums. Philips claims up to 15x healthier gums in six weeks.

How many brushing modes and intensities does it have?

Five modes and three intensity levels, for 15 combined settings. Modes cover everyday clean, gum care, whitening and sensitive brushing.

Do I need the app to use it?

No. The brush works on its own, and the app adds tracking and coaching. Some owners skip the app entirely.

The handle, brush heads, a charging travel case and a charger. It carries a 2-year warranty.

Is it worth it over a cheaper Sonicare?

If you want automatic pressure protection and app coaching, yes. If you just want strong sonic cleaning, a mid-range model does most of the job.

Where is the Philips Sonicare 9900 Prestige cheapest?

At eBay, for $128.99, 61% under what the other stores charge, as of our latest check.

What do buyers say about the Philips Sonicare 9900 Prestige?

Rated 4.2 out of 5 from 495 ratings.

Where can I buy the Philips Sonicare 9900 Prestige?

15 stores we checked sell it, including eBay, Philips, Amazon, Best Buy, Kohl's.

Philips Sonicare 9900 Prestige

Best price now

$128.99at eBayChecked 12 h ago

61% under what the other stores charge

Compared across 15 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission.

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What reviewers say

4.2 / 5495 ratings

Owners rate it highly for cleaning power and gum comfort, and many say the pressure sensor changed how they brush. Criticism centers on the app, the premium tier and the firmness of the heads.

What people mention

Cleaning powerPraisedOwners say teeth feel noticeably cleaner than with older or manual brushes.
Pressure sensingPraisedMany say the automatic intensity drop stopped them brushing too hard and helped their gums.
AppMixedSome like the brushing reports; others find the prompts and setup unnecessary.
Bristle firmnessCriticisedA few sensitive-gum users find the medium heads too firm.
BuildPraisedOwners describe the handle as solid and well sealed.

About the Philips Sonicare 9900 Prestige

The Philips Sonicare 9900 Prestige is an electric toothbrush with sonic technology and SenseIQ. It makes 62,000 bristle movements per minute and has medium bristles. It is rechargeable.

SenseIQ senses pressure, motion and coverage up to 100 times per second. When you brush too hard, it adjusts intensity automatically to protect teeth and gums.

It has 5 brushing modes and 3 intensity levels, for 15 brushing settings in total. Philips states it removes up to 20x more plaque than a manual toothbrush, gives up to 15x healthier gums in six weeks, and removes up to 100% more stain in less than two days.

Type

Electric, sonic

Bristle movements

62,000 per minute

Bristle type

Medium

Brushing modes

Intensity levels

Brushing settings

Sensing rate

Up to 100 times per second

Power