How long does KöR whitening take?

A typical case is about two weeks of at-home whitening in your custom trays, followed by a finishing visit in our Irvine office. Deeper stains may take a little longer.

Do I have to give up coffee and red wine?

No. With occasional at-home touch-ups in your trays, KöR results are designed to last, and you can keep enjoying your favorite foods and drinks.

Why no lights or lasers?

Independent studies haven't shown that bleaching lights improve results, and the heat can increase sensitivity and dehydrate teeth, which makes them look temporarily whiter. KöR relies on chemistry and fit instead.

Can KöR whiten tetracycline or grey stains?

Often, yes. KöR is one of the few systems known for treating stubborn tetracycline and grey staining, using an extended protocol.

How much does teeth whitening cost in Irvine?

Pricing depends on the protocol your smile needs. We'll give you a clear, itemized quote at your consultation, and financing is available.

KöR® Whitening · Irvine

Whiter teeth, without the wince.

We use KöR, a professional whitening system built around comfort. Deep, lasting results with little to no sensitivity, and you can keep your morning coffee.

Book a whitening consult How it works

No lights, no lasers Low to no sensitivity Results built to last

Smile after KöR whitening at mend dental

Drag the handle to compare. Results vary, we'll show you real mend cases at your consult.

Why KöR

The science, in plain English.

Most whitening fails in two ways: it hurts, or it fades. KöR was engineered around five ideas that fix both. Tap a card to see the science.

Refrigerated gel

Custom-fit trays

Just chemistry

Low sensitivity

Long-lasting

6+ hrs

of active whitening per night in sealed KöR trays, versus the 20–30 minutes most gels manage before saliva shuts them down.

That's the whole difference: more time working, at lower strength, with less sting.

Your whitening journey · about 2–3 weeks

How KöR works at mend, step by step.

Digital 3D scan for custom whitening trays

Day 1

Consult & 3D scan

We check your shade, look for anything that needs attention first, and take a quick digital scan, no goopy impressions.

Day 7

Trays & kit fitting

Your KöR-Seal trays arrive from the lab. We fit them, show you the routine and send you home with refrigerated gel.

Wk 1–2

Whiten while you sleep

Wear your trays overnight. Apply the desensitizer each morning. Most people see a change within days.

Finishing whitening visit and shade reveal

Wk 3

Finishing visit

A final in-office boost locks in your result. Then just occasional touch-ups at home to keep it.

Compare

Strips, lights, or KöR?

Whitening strips work on surface stain. Bleaching lights mostly dehydrate teeth, which fades within days. KöR works deeper, and gently.

Book a consult

Store stripsLight / laserKöR at Mend

Reaches deep, set-in stains ✕Surface only ~Partly ✓Yes

Active whitening time ✕~30 min ~~1 hr ✓6+ hrs / night

Sensitivity ✕Common ✕Often high ✓Low to none

Results last ✕Weeks ✕Fades in days ✓Years*

Coffee & wine allowed ✕Avoid ✕Avoid ✓Yes

Custom-fit trays ✕No ~Sometimes ✓Always

*With occasional at-home touch-ups in your trays.

Is KöR right for you?

Great for the stains other whitening gives up on.

Coffee, tea and wine stains that strips never quite fix
Yellowing that comes with age
Sensitive teeth that have ruled out whitening before
Grey or tetracycline staining (with an extended protocol)
A wedding, interview or milestone on the calendar

Crowns, veneers and fillings don't whiten, we'll talk through matching options at your consult.

Custom-fit KöR-Seal whitening trays made for a mend dental patient

mend dental patient smiling after KöR whitening in Irvine

From our patients

Comfortable visits

Whitening questions, answered.

Most KöR patients report little to no sensitivity. The gel is refrigerated from the day it's made, so it doesn't need the harsh acid stabilizers that cause zingers, and every kit includes a desensitizer you apply after each session.

Book a dental appointment at mend dental Irvine

Ready for a brighter smile?

Book a whitening consultation. We'll check your shade, talk through your goals and give you a clear quote.

Book Appointment

Whiter teeth, without the wince.

We use KöR, a professional whitening system built around comfort. Deep, lasting results with little to no sensitivity, and you can keep your morning coffee.

No lights, no lasers Low to no sensitivity Results built to last

Whiter teeth, without the wince.

The science, in plain English.

Kept cold, so it stays strong

Trays that actually seal

No lights. No lasers.

Comfort built in

Results that stay

How KöR works at mend, step by step.

Consult & 3D scan

Trays & kit fitting

Whiten while you sleep

Finishing visit

Strips, lights, or KöR?

Great for the stains other whitening gives up on.

Comfortable visits

Whitening questions, answered.

Ready for a brighter smile?

Whiter teeth, without the wince.

The science, in plain English.

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How KöR works at mend, step by step.

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Strips, lights, or KöR?

Great for the stains other whitening gives up on.

Comfortable visits

Whitening questions, answered.

Ready for a brighter smile?