ASTRA DENTAL CLINIC Contact us on LINE
Dentist-dispensed whitening

Change your smile
as easily as you change your clothes.

On the sofa. In a hotel bed.
Whitening wherever you are, whenever you like.

No impressionsNo appointmentStart today

Results vary by individual.

Opalescence Go — Pre-filled tray Pre-filled tray 10 days / box
daily90min
01Why you never started

You've thought about whitening.
Something always stopped you.

TIME

“It would take half a day. Maybe next time.”

EFFORT

“Impressions, a fitting, then a second visit.”

TIMING

“The event is this weekend. Too late now.”

Opalescence Go removes all three.

02What is Whitening Go

Dentist-dispensed whitening,
with no impressions taken.

A single-use tray that arrives already filled with gel.
No moulds, no fitting — if it's in stock, you take it home the same day.
Available only through a dental clinic.

  • 1

    Outer tray (green)

  • 2

    Inner tray (white)

  • 3

    Whitening gel
    pre-filled

No impressions

Ready-made single-use trays. Walk in, walk out with it.

90 minutes a day

Wear it and carry on with your evening.

Whitens from within

It doesn't bleach the surface — it works gradually from inside the tooth.

03How to buy

Three steps.
No appointment needed.

STEP 1

Message us

Send us a message on LINE or WhatsApp — ask if it's in stock and tell us when you'd like to come.

STEP 2

We reply

We set a box aside for you and let you know when to drop by.

STEP 3

Pick it up

Stop by the clinic, collect it, and start the same evening.

No consultation requiredNo booking systemNo waiting room
04How to use

Five steps. That's all.

No preparation, no equipment. Put the tray in and carry on with your day.

STEP 1

Take it out

Remove the tray from the packaging. U = upper teeth, L = lower teeth.

STEP 2

Place on upper teeth

Hold the green outer tray and place it over your upper arch.

STEP 3

Bite gently

Bite gently to make sure the inner tray is seated against your teeth.

STEP 4

Remove the outer tray

Peel away only the green outer tray. Repeat for the lower teeth.

STEP 5

Wear, then discard

Wear for the time your dentist advises, then discard the tray and brush your teeth.

Source: Opalescence official instructions for Opalescence Go.

Brush your teeth before each session to clear the surface first.

A few things we ask of you

90 minutes, once a day

Up to 10 consecutive days is the recommended course.

Never wear it overnight

Do not fall asleep with the tray in.

Stop if it hurts

If your teeth sting or ache, remove it before the 90 minutes are up.

Careful for 24–48 hours

Go easy on coffee, tea, red wine and curry while whitening and just after.

05How they differ

Why the colour holds
for so much longer.

Both use peroxide to break down pigment inside the tooth.
What differs is the concentration — and how deep, and how fast, it works.

In-office whitening

High concentration · Hydrogen peroxide 30–35%

A strong, fast reaction that breaks down pigment near the surface.

Whitening Go

Low concentration · Carbamide peroxide ~6%

Penetrates slowly, reaching pigment deep in the tooth, near the dentin.

Enamel Dentin
In-office
Whitening Go
Agent
Hydrogen peroxide 30–35%High concentration
Carbamide peroxide ~6%Low concentration
How it works
Fast, near the surfaceA strong, short reaction
Slow, and deepReaches pigment near the dentin
How it looks white
Bleach plus surface maskingWhite the moment you leave
The tooth itself tones upBrighter from within, gradually
Speed
One sessionWhite the same day
1–2 weeksBuilds up day by day
Longevity
3–6 monthsRebounds relatively fast
6 months – 1 yearSlow to rebound

How the brightness holds

In-office whitening Whitening Go

Illustrative only. Longevity varies by individual.

06Pros and cons

Both sides, honestly.

Neither is better — they do different jobs.
In-office is for the week before the wedding. Go is for the way you want to look every day.

Whitening Go

Advantages

  • The colour rebounds slowly
  • Continue at your own pace
  • Reaches the back teeth too
  • No impressions — easy to start
  • Few clinic visits needed

Trade-offs

  • Takes time before you notice a change
  • Needs daily consistency and self-management
  • Not ideal if you need white immediately
  • Consult us first if you have sensitivity

In-office whitening

Advantages

  • Visible result after a single session
  • Performed by a dentist or hygienist
  • Can be paired with a cleaning for more effect
  • Ideal before an event or a special day

Trade-offs

  • The colour rebounds relatively quickly
  • You need to set aside clinic time
  • Temporary sensitivity can occur
07What to expect, and when

It won't change overnight.
That is exactly why it lasts.

Day 1

You begin

Brush, then wear the tray for 90 minutes.

Day 10

One box done

You can see the tone has lifted yourself.

Week 3–4

Others notice

People around you clearly see that your teeth are whiter.

2–3 boxes

It depends on your natural shade, how much staining there is, and your daily habits. Go at your own pace — consistency matters more than speed. Results vary by individual.

08Price

One box is a complete course.

10 pieces / 1 box
5,000THB
500 THB a day, for 10 days

We recommend at least 10 days of use,
so a single box covers the full course.

  • 10 upper trays
  • 10 lower trays
  • A walk-through of how to use it
09Why it comes from a dentist

How this differs
from what's on the shelf.

A different concentration

Over-the-counter whitening is limited by regulation in the ingredients and concentrations it may use. A dentist-dispensed agent can carry a higher concentration of the active ingredient.

Your mouth is checked first

We make sure you're not whitening over untreated decay or gum disease — a step only a clinic can give you.

Formulated for sensitivity

Opalescence Go contains potassium nitrate and fluoride to help ease sensitivity during use.

10Right for you? Let's check

One thing to confirm
before you begin.

A good fit if you

  • Want the back teeth whitened too
  • Struggle to find time for clinic visits
  • Travel or take business trips often
  • Want the result to hold as long as possible
  • Simply want to try it first

Please talk to us first if you

  • Have marked tooth sensitivity
  • Have untreated decay or gum disease
  • Are pregnant or breastfeeding
  • Have fillings, crowns or implants on front teeth

Whitening has no effect on artificial teeth — fillings, crowns and implants. On natural teeth a change of roughly 2–3 shades is typical, though this varies with the condition of your teeth.

11Getting whiter, faster

The same ten days.
A whiter result.

There is something you can do before you start
to get the most out of the gel.

How to see the change sooner

Brush thoroughly before every tray

Plaque left on the tooth surface blocks the gel from penetrating. The brushing you do before the tray goes in shows up directly in the result.

But brushing alone cannot remove tartar, hardened plaque and set-in stains.

Start with a cleaning

Prepare the surface first.

Cleaning
990THB

Bookable at the best price in the Sukhumvit area.

+ Airflow
+1,300THB

Added to the cleaning fee — a package including a dedicated stain-removal treatment.

12Frequently asked

Let's clear these up
before you start.

Will my teeth become sensitive?
Temporary sensitivity — a twinge with cold drinks, for example — can occur during or after use. Opalescence Go contains potassium nitrate and fluoride to help ease it. That said, if you already have sensitivity, or depending on the condition of your teeth, symptoms may be more noticeable. Don't push through it: stop and talk to your dentist. Results and reactions vary by individual.
How is this different from what I can buy in a shop?
Opalescence Go is dispensed through a dental clinic. Over-the-counter products are restricted by regulation in the ingredients and concentrations they may contain, while a dentist-dispensed agent can use a higher concentration of the active ingredient. There is also a safety benefit: your dentist checks your mouth first, so you avoid whitening over untreated decay or gum disease. Results vary by individual.
How long does the result last?
This varies by individual. Take-home whitening is characterised by a slower colour rebound, but it is still affected by everyday food and drink — coffee, tea, red wine — and by smoking. In many cases some rebound appears within several months to a year. Regular maintenance or a top-up course makes the brightness easier to hold. Results vary by individual.
Does it work if I have fillings or implants?
It has no effect on artificial teeth. On natural teeth, a change of around 2–3 shades is common, though this varies with the condition of your teeth. If you have restorations on your front teeth, the difference in shade may become noticeable — please talk to us first.
Can I use it while travelling?
Yes. Each tray is individually packed and single-use, and no impressions or equipment are needed. It works just as well in a hotel room. Avoid storing it anywhere that gets hot.
I forgot to use it for a day.
That's fine. Just pick it up again the next day. Ten consecutive days is the guideline, not a rule — continue at your own pace, and message us any time you're unsure.
Begin

It starts with
a single message.

“Is it in stock?” — that's all you need to send.
No appointment, no commitment.

Address

919 Sukhumvit Rd, Khwaeng Khlong Tan Nuea, Bangkok

Getting here

4-minute walk from BTS Thong Lo

Opening hours

Every day, 10:00 – 20:00

Phone

081-148-6115

Languages

ไทย / English / 日本語

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