What is the water tool used during a dental cleaning?

The water tool used during a dental cleaning is called an ultrasonic scaler. A dental provider uses this handheld device to break apart and rinse away hardened plaque and tartar from your teeth and along the gumline using rapid vibrations and a continuous stream of water. 

The buzzing sound, the water spray and the suction that follows are all part of the same process. Understanding how an ultrasonic scaler works can make your next dental cleaning feel much more familiar. 

What you'll learn in this article: 

• The tool uses high-speed vibrations to break up tartar without any scraping. 

• The water stream cools the tip and flushes away debris as it works. 

• A brief metallic taste is normal and comes from loosened buildup washing away. 

• Mild sensitivity after your cleaning is common and usually fades within 24–48 hours. 

• You can ask your provider to adjust the settings or switch to hand instruments at any time. 

If you are overdue for a cleaning or have questions about what to expect, schedule an appointment with your Aspen Dental provider. 

How the ultrasonic scaler works 

The tip of the ultrasonic scaler vibrates extremely fast — roughly 25,000–50,000 times per second. You cannot see it move, but you can feel a light humming sensation against your teeth. 

Those vibrations create tiny pressure bursts in the surrounding water. Those bursts are what knock tartar loose. Tartar is hardened buildup that forms when plaque is not fully removed by brushing — and once it hardens, it cannot be removed at home. 

The scaler is not scraping or cutting your teeth. It simply disrupts the bond between the tartar and the tooth using vibration and water — then flushes the debris away. 

Why is water sprayed during the cleaning? 

The water serves two essential purposes — and neither is simply rinsing your mouth. 

Cooling: The vibrating tip generates heat. The continuous water stream keeps the tip from warming up, which protects your tooth enamel and the surrounding gum tissue from thermal damage. 

Flushing: As tartar breaks apart, the water carries the loosened debris away in real time. This keeps the area clear so your provider can see exactly what they are working on — and prevents dislodged material from settling elsewhere in the gum pocket. 

Softens the experience: The steady water flow also makes the procedure more comfortable overall. It reduces the friction and dry heat that would otherwise make scaling feel more intense. 

What does it feel like? 

Most patients feel a light humming or vibrating sensation on their teeth and a cool, steady spray of water. The sound can seem louder than it is simply because it is so close to your ear. 

If you have sensitive teeth or tender gums, you may notice some discomfort near the gumline — this is normal. It usually just means that area has more buildup or needs a little extra attention. 

If anything feels too uncomfortable, let your provider know. They can lower the setting, pause for a moment or switch to a hand instrument for that spot. 

Ultrasonic scaler vs. hand instruments 

The ultrasonic scaler and hand instruments each do a specific job — and most providers use both in the same appointment. 

The scaler works quickly to clear large or widespread tartar deposits and reach along the gumline. Hand instruments — small, precisely shaped metal tools — handle the detail work: surfaces the scaler's tip cannot reach and spots where a gentler touch is needed. 

Most providers move between both throughout the appointment. The scaler handles volume; hand instruments handle precision. 

Is the water tool safe for everyone? 

For most patients, yes — the ultrasonic scaler is considered a safe, standard part of professional dental cleanings. 

There are some exceptions worth knowing. Patients with certain pacemakers or implanted cardiac devices may need their provider to use hand instruments only. That is because ultrasonic vibrations can occasionally interfere with older device models. Patients with titanium implants that are still in the early healing phase should also mention this before their cleaning. 

If you have any implanted medical devices, let your dental provider know at the start of your appointment. They will adjust the approach accordingly. 

Why you may feel sensitive after your cleaning 

Some tenderness or tooth sensitivity after a cleaning is completely normal — particularly if it has been more than 6–12 months since your last visit. 

Here is why: tartar acts as a physical shield, covering parts of your teeth and gumline. Once it is removed, those surfaces are briefly exposed to temperature and pressure they were not previously feeling. The tissue around the gumline may also feel slightly tender as it recovers. 

This sensitivity typically resolves within 24–48 hours. A few things that help during that window: 

• Drink cold beverages through a straw 

• Avoid very hot or very cold foods temporarily 

• Use sensitive toothpaste during this period 

If sensitivity persists beyond a few days, feels sharp, or seems to come from one specific tooth, mention it at your next visit. 

When to schedule your next cleaning 

The ultrasonic scaler is one of several tools your provider uses to thoroughly clean your teeth and protect your long-term oral health. The American Dental Association recommends professional cleanings every 6 months for most adults — and staying consistent is the most effective way to prevent tartar from building back up.¹ 

Your provider will walk you through exactly what they are doing throughout your visit and can answer any questions about the tools they use. Schedule an appointment at your nearest Aspen Dental office. 

What is the water tool used during a dental cleaning? FAQs 

Can I ask my provider to use hand tools instead of the water scaler? 

Yes. If the ultrasonic scaler causes significant discomfort, you can ask your provider to use hand instruments instead. Most dental providers are happy to accommodate this. Keep in mind that for heavy buildup, the scaler is often much faster — so skipping it may mean a longer appointment to achieve the same level of cleaning. 

Why does the water taste slightly metallic or salty during the cleaning? 

In most cases, what you're tasting is loosened tartar and debris being flushed away — completely harmless. Some dental providers add a mild antimicrobial solution to the water supply, which can have a faint taste as well. Neither sensation indicates anything is wrong. 

Does the ultrasonic scaler clean below the gumline? 

Yes — this is one of its main advantages. The scaler tip can reach into the space between the tooth root and gum tissue (called the periodontal pocket). This makes it particularly useful for patients who have early gum disease or deeper pockets that hand instruments alone cannot fully access. 

How is a deep cleaning different from a routine cleaning? 

A routine cleaning — called a prophylaxis — removes plaque and tartar from tooth surfaces at and above the gumline. A deep cleaning, called scaling and root planing, uses similar tools but goes further down onto the root surface below the gumline. Deep cleanings are recommended when gum disease has caused the pockets between teeth and gums to deepen beyond what a standard cleaning can reach.² 

Sources 

¹American Dental Association – Home Oral Care: https://www.ada.org/resources/ada-library/oral-health-topics/home-care 

²Cleveland Clinic – Dental Cleaning: https://my.clevelandclinic.org/health/treatments/11187-dental-check-up