Is teeth whitening safe? What to know before you start

It is a fair question, and one we hear often. Teeth whitening is widely used and, when it is done carefully by a trained professional, it is a well-understood cosmetic treatment. What matters is how it is done. In this guide you will learn how whitening works, what a careful visit looks like, how sensitivity is handled, and who should wait.

How teeth whitening works

Most professional whitening uses a gel containing hydrogen peroxide or carbamide peroxide, which slowly turns into hydrogen peroxide. The gel passes into the enamel and breaks down the colour molecules that have built up there. As these molecules break apart, they reflect light differently and the tooth looks lighter. Whitening changes the colour of the tooth structure. It does not remove tartar or plaque, which is why a clean tooth surface matters before you start.

What a careful visit includes

A good whitening visit is more than applying gel. It should include:

• A look at your teeth and gums and questions about your health, medicines and past dental work
• A discussion about sensitivity and what you can expect
• A record of your starting shade, so you can compare afterwards
• Cleaning and drying of the teeth, and protection for your gums and lips
• Careful application of the gel, with rests and checks along the way
• A final shade comparison and clear aftercare advice

If we see a problem, such as a cavity, gum trouble or a cracked tooth, we will advise you to see a dentist first rather than go ahead.

Who does the whitening

At Orwhite, basic whitening is done by BDS Orwhite-certified dentists, and advanced whitening is done by MDS Orwhite-certified specialist dentists. We also partner with dental clinics and dentists in Kannur, so if we find a problem that needs treatment, you will be advised to see a dentist.

Is it safe for enamel?

When whitening is done properly and not overused, studies and dental bodies generally consider peroxide-based whitening safe for healthy teeth. The risks go up with strong products used without guidance, products left on too long, and repeated treatments too close together. This is why a controlled process and a trained professional matter more than the product alone.

Understanding sensitivity

The most common side effect is temporary sensitivity, usually felt as a quick sharp sensation with cold air, cold drinks or sweet food. It happens because the gel can pass through the enamel and make the nerve inside the tooth more responsive for a short time. For most people it settles within a day or two. Gum irritation, such as a whitish patch or soreness, can also happen if gel touches the gums, and it normally fades quickly.

To reduce sensitivity, tell us before we start if your teeth are sensitive, use a toothpaste for sensitive teeth in the days before and after, avoid very hot and cold food and drinks for a few days, and brush gently. If discomfort is strong or lasts, please call us or see your dentist.

Who should wait or check with a dentist first

Whitening is not right for everyone. You should wait, or speak to a dentist first, if you:

• Have untreated cavities, gum disease or cracked teeth
• Are pregnant or breastfeeding, because there is not enough safety information, so it is best to wait
• Have very sensitive teeth or worn enamel
• Have had an allergic reaction to whitening products before
• Are a child or young teenager, whose teeth are still developing

What whitening does not change

Whitening only changes the colour of natural teeth. It does not change crowns, veneers, fillings or false teeth, and it may not work well on stains caused by certain childhood medicines, too much fluoride, or injury to a tooth. Results also differ between people, so the aim is a noticeably brighter shade rather than a particular colour.

Questions to ask before you book

• Who will do my whitening, and are they trained?
• Will you check my teeth and gums first?
• How do you protect my gums and lips?
• What can I expect for my teeth and my shade?
• What aftercare will you give me?

You should get clear, honest answers to all of these. If you have a question that is not covered here, call us. We are happy to explain every step before you book.

In short

• Professional whitening uses peroxide gel to break down stains within the enamel.
• A careful visit includes a check, gum and lip protection, and clear aftercare.
• Mild, temporary sensitivity is the most common side effect.
• Wait or see a dentist first if you have cavities or gum disease, or are pregnant or breastfeeding.
• Whitening does not change crowns, veneers or fillings.

Have a question before you book? Call Orwhite and we will explain every step, check whether whitening suits you, and tell you honestly if you should see a dentist first.