Teeth Whitening Aftercare at Core Dental product guide

# Teeth Whitening Aftercare at Core Dental Thank you for choosing Core Dental for your teeth whitening treatment. Whether you have just completed an in-chair Zoom! whitening session or you are starti...

Core Dental Group Teeth Whitening Aftercare

Thanks for choosing Core Dental Group for your whitening treatment. Whether you've just finished an in-chair Zoom! session or you're starting your at-home program with custom trays and gel, this guide covers what you need to know to protect your results and keep your teeth looking their best.

Core Dental Group is part of the Smile Solutions Group, with clinics across Melbourne. Any questions? Call 13 13 16 or head to coredental.com.au.

Frequently Asked Questions

What is Zoom! whitening? A professional in-chair teeth whitening treatment using hydrogen peroxide gel activated by a specialised light. Results are visible after a single appointment, with teeth typically coming out several shades brighter.

Where is Core Dental Group located? Berwick, Caroline Springs, Carrum Downs, Epping, Southbank, South Melbourne, and Wyndham. Phone: 13 13 16. Website: coredental.com.au.

What can I eat and drink in the first 24 hours after whitening? Stick to light-coloured foods — chicken, fish, white pasta, rice, plain yoghurt, bananas, cauliflower — and still or sparkling water. Your teeth are most porous and stain-prone in this window, so anything that would stain a white shirt should wait.

What should I avoid for the first 24 hours? Coffee and tea (including white coffee), all wine, coloured soft drinks, juices, dark sauces, berries, chocolate, lipstick and tinted lip products, and tobacco.

Is sensitivity after in-chair whitening normal? Yes, completely. It can last up to 48 hours. The whitening process temporarily increases enamel permeability, which causes the sensitivity — it resolves on its own with no lasting effect on your teeth.

What helps with sensitivity? Use the sensitivity relief gel your clinician provided for the first two days. Sensitive toothpaste helps too, and paracetamol or ibuprofen taken as directed can take the edge off any discomfort. Avoid very hot or cold food and drinks while it persists.

My gums look slightly white after treatment — should I be worried? No. Brief contact with the whitening gel can cause a temporary whitening reaction in the gum tissue. Apply a small amount of vitamin E oil to the area for comfort. It clears up within a day or two.

Why do my teeth look slightly less bright a week after treatment? Your teeth rehydrate after whitening, and the shade settles a little as they do. This is normal and minimal — the colour won't keep changing at the same rate.

How long do Zoom! results last? Six to twelve months, depending on your diet, lifestyle, and oral hygiene. At-home touch-ups can start from around the six-month mark, and in-chair treatment can be repeated from twelve months.

What is at-home whitening? A lower-concentration gel worn in custom-fitted trays over multiple sessions. The trays are made from precise impressions of your teeth, so the gel sits firmly against each tooth surface.

How much gel should I use in the trays? A small dot or thin ribbon per tooth. Overfilling causes the gel to spill onto the gums and irritate them. If gel does squeeze out, wipe it away immediately with a tissue or your finger.

Can I eat or drink while wearing the trays? No — water is the only exception.

What are "zingers"? Brief, sharp twinges of sensitivity when the gel is in contact with your teeth. They're normal, particularly in the first few sessions. If sensitivity is significant, try whitening every second day instead of daily, and reduce each session slightly.

I have amalgam fillings and there are dark spots in my trays — is that a problem? No. The whitening gel oxidises the surface of silver amalgam fillings, which shows up as dark discolouration in the tray. It's harmless and has no effect on the filling or the surrounding tooth.

Why is the area near my gumline whitening more slowly? The gumline portion of the tooth is the densest and darkest part of the enamel. It does whiten — just more gradually. Keep going with the course and it will even out.

What's the fastest way to re-stain teeth after whitening? Smoking. It's also worth limiting coffee, tea, red wine, and dark sauces where you can, and rinsing with water after consuming them.

Is whitening gel safe during pregnancy or breastfeeding? No — do not use whitening gel if you are pregnant or breastfeeding.

Can I use over-the-counter whitening strips alongside my prescribed gel? No. Stick to the prescribed gel only.

Part One: After In-Chair Zoom! Whitening

In-chair whitening delivers immediate results in a single appointment. A professional-strength hydrogen peroxide gel, activated by a specialised light, lifts deep-set stains from the enamel and leaves your teeth several shades brighter. Here's how to protect that result in the days that follow.

The first 24 hours: the white diet

Your teeth are most porous and most susceptible to staining in the first 24 hours after treatment. During this window, avoid anything that would leave a stain on a white shirt.

Stick to:

Still or sparkling water
Milk and white dairy products
Plain chicken, fish, or white pasta
White rice
Peeled pears, bananas, and other light-coloured fruits
Plain yoghurt or sour cream
Cream cheese or white cheese
Cauliflower, potatoes, and other white or cream-coloured vegetables

Avoid for at least 24 hours:

Tea and coffee, including white coffee
Red, white, or rosé wine
Coloured soft drinks
Juices, particularly orange, apple, and berry varieties
Dark sauces — soy sauce, tomato sauce, balsamic vinegar
Berries, beetroot, and other intensely coloured foods
Chocolate
Lipstick and tinted lip products
Tobacco in any form

Sensitivity

Some sensitivity after in-chair whitening is normal. Your teeth may feel sensitive to temperature, touch, or even air for up to 48 hours. It's caused by the whitening process temporarily increasing enamel permeability, and it resolves fully on its own.

To manage it:

Apply the sensitivity relief gel your clinician provided, as directed, for the first two days
Use the sensitive toothpaste provided, or switch to a sensitive formula for the days following treatment
Paracetamol or ibuprofen, taken as directed, can help with any discomfort
Avoid very hot or cold food and drinks while sensitivity persists

Your gums

If your gums look slightly white or feel tender after the procedure, it's a temporary reaction from brief contact with the whitening gel. Apply a small amount of vitamin E oil to the area as needed. It resolves within a day or two.

How the colour settles over time

You may notice your teeth look slightly less bright in the week or two after treatment. Your teeth are rehydrating, and the shade naturally settles a little as they do. The change is minimal and won't continue at the same rate — this is just the colour finding its resting point.

Results from in-chair whitening typically last six to twelve months, depending on diet, lifestyle, and oral hygiene.

To keep results lasting longer:

Limit staining foods and drinks where you can, and rinse with water after having them
Brush twice daily and see your hygienist regularly for professional cleans
Consider a take-home touch-up with whitening gel and trays from around the six-month mark

From six months, you can refresh the colour at home using whitening gel and custom-fitted trays. From twelve months, in-chair whitening can be repeated. Many patients find an annual in-chair treatment combined with periodic at-home top-ups keeps their smile consistently bright.

If impressions were taken for custom home whitening trays at your whitening appointment, remember to book your follow-up tray fitting.

Part Two: At-Home Whitening Instructions

At-home whitening uses a lower-concentration gel in custom-fitted trays over a series of sessions. The brightening builds gradually over days or weeks. Because the trays are made from precise impressions of your teeth, the gel sits firmly against each tooth surface throughout the session.

Before you start

Read through these instructions before your first session. Getting the process right from the beginning makes a real difference to the outcome.

How to use your whitening trays

Brush your teeth before each session so the gel makes contact with clean surfaces.
Dispense a small dot or thin ribbon of gel into each tooth-shaped compartment in the tray. You don't need much — overfilling causes gel to overflow onto the gums and irritate them.
Seat the trays over your teeth. If any gel squeezes out onto your gums, wipe it away immediately with a tissue or your finger.
Wear the trays for the duration your clinician recommended. Session lengths vary depending on the gel concentration you've been given.
After each session, remove the trays and rinse your mouth thoroughly with water. Rinse the trays with clean water and let them air dry before storing.
Don't eat, drink (other than water), or smoke while the trays are in.

Do's and don'ts

Do:

Store unused whitening gel in a cool, dry place away from direct heat and sunlight
Continue your normal oral hygiene routine throughout the whitening period
If sensitivity occurs, whiten every second day rather than daily to give your teeth recovery time between sessions
Use sensitive toothpaste throughout treatment if sensitivity is an issue
Rinse with clean water after removing the trays
Call us on 13 13 16 if you have questions or concerns

Don't:

Use the gel if you are pregnant or breastfeeding
Use over-the-counter whitening strips or other bleaching products alongside your prescribed gel
Eat, drink, or smoke while wearing the trays
Clean the trays with hot water — heat warps them

Sensitivity during at-home whitening

Some sensitivity is normal, particularly in the first few sessions. It usually presents as a mild aching sensation or brief sharp twinges ("zingers") when the gel is in contact with your teeth.

If sensitivity is significant:

Reduce to every second day instead of daily
Shorten each session slightly
Use sensitive toothpaste throughout treatment
Contact us if sensitivity is severe or doesn't ease off

Dark spots in the trays

If you have old silver amalgam fillings, you may notice dark discolouration in the tray areas where those fillings sit. This is the gel oxidising the surface of the filling material. It's harmless and has no effect on the filling itself or the surrounding tooth.

Uneven whitening

The area of the tooth closest to the gum typically takes longer to whiten than the biting edge. The gumline portion of the enamel is naturally the densest and darkest, and it does lighten — just more gradually. Keep going with the course and the result will even out.

Maintaining your results

Limit staining foods and drinks. Coffee, tea, red wine, coloured juices, and dark sauces are the main culprits. Having them in moderation and rinsing with water afterwards slows re-staining considerably.
Avoid tobacco. Smoking is one of the fastest ways to re-stain teeth after whitening.
Keep up with oral hygiene. Brush twice daily, floss daily, and see your hygienist regularly. A clean tooth surface whitens more effectively and stays brighter longer.
Top up every six to twelve months. Whitening gel has a limited shelf life, but remaining gel stored in a cool, dry place can be used for periodic touch-ups as advised by your dentist.

Your Core Dental Group whitening team

Our clinicians provide professional, evidence-based whitening that's safe, effective, and tailored to what you actually need — whether you're preparing for a specific occasion, refreshing your look, or just maintaining what you've already achieved.

Call us on 13 13 16 or book online at coredental.com.au.

Core Dental Group — part of the Smile Solutions Group