West 85th Dental
8561 8A Ave SW Calgary AB T3H 0V5 (403) 246-5545

(587) 355-4332

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At-Home vs Dentist Teeth Whitening: What’s the Difference? Hero

At-Home vs Dentist Teeth Whitening: What’s the Difference?

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smiling young woman with white teeth

It’s unusual to have perfectly white teeth, and beauty is in the eye of the beholder. But if you feel that your teeth could be whiter, you might be able to reach a shade that better reflects a healthy glow. That might mean you can change the shade of your teeth for the better, but you’ll have to decide on whether to do it at home or at the dentist.

How White Are Teeth Supposed to Be?

Teeth have several layers, the outside of which is the enamel. Underneath this layer is a much thicker layer called dentin. This dentin layer ranges from white to yellow, depending on age and genetics. 

There are a few factors affecting your teeth’s whiteness like age, diet, and hygiene habits. Age really affects the colour of your teeth since the dentin layer naturally darkens as we age, and there’s nothing really wrong with having some level of yellowness. 

When we think of diet, we usually refer to the types of nutrients we get from food, but diet affecting tooth colour has more to do with the pigments found in the food or drink. Pigments stain the outer surface in a process called extrinsic staining

Over time, this discolouration can work past the enamel layer in a process called intrinsic staining. The usual suspects causing this type of staining are red wine, coffee, tea, cola, red fruits, soy sauce, and berries

Neglecting brushing and flossing habits can lead to discoloured teeth if you haven’t had a focus on brushing several times a day and flossing at least once a day. But it’s never too late to start.

Yellow Brown or Grey Teeth

If you feel your tooth colour is off, it would help to distinguish whether your teeth are more on the blue to grey side of discolouration, or if they’re browner than they could be.

Some children develop a condition called dentinogenesis imperfecta, where tooth discolouration takes on grey, amber, or purple hues. Teeth whitening may have limited effect in these cases.

How to Prevent Tooth Discolouration Prevention

You can stave off browner discolouration by developing good habits, like brushing your teeth after every meal, rinsing your mouth after drinking coffee, tea, red wine or cola – and by ensuring you get regular dental cleanings

Root canals are another issue, but they can be linked to discolouration. Discolouration can occur when there’s a delay in repairs to nerve damage on the pulp layer of affected teeth. It’s staining from deep within the tooth and whitening won’t help if it’s not treated soon.

If you still experience discolouration despite good habits and regular dental care, you can try some professional or do-it-yourself, at-home whitening solutions. Here’s where you can try to turn it around

woman using whitening strips to whiten her teeth at home

Whitening at Home


At-home treatment begins with a great oral hygiene regimen to remove that extrinsic tooth staining. For intrinsic tooth staining, where pigments penetrate past the enamel layer, 

over-the-counter products like whitening strips may get rid of the discolouration. Whitening strips using peroxide typically whiten teeth by 1-2 shades, and their efficiency is limited. However, if all you’re looking for is a lift in colour, whitening strips are a great tool. 


Some chewing gums and toothpastes advertised as having a whitening feature use abrasive particles to scrape extrinsic stains off the tooth’s surface. These particles are much finer than regular tooth paste’s abrasives, so while they aren’t likely to wear enamel off faster, these whiteners aren’t going to do anything extraordinary for dental health or appearance. Rubbing stains away with these methods mean rubbing an important part of the tooth away as well, so it’s a solution that doesn’t scale that well with time. 

Whitening at the Dentist


With professional guidance and processes, you can optimize your whitening treatment to suit you, and safely attain your ideal tooth shade in short order. Bleaching, or the use of peroxides, allows for removal of discolouration without abrasion. 

Dentists can use techniques like power bleaching to lighten teeth a few shades in less than an hour, thanks to the use of stronger bleaching agents and lights to ensure lightening reaches 3 to 8 shades, as opposed to the 1 or 2 shade improvement possible through home whitening kits. There’s a big difference in the efficiency of methods, so there’s a big difference in results. 


A trip to the dentist can cause some anxiety in some people. As long as you can find a dentist that cares about your comfort level and best practices, it doesn’t have to be the unpleasant situation it’s made out to be.

Teeth whitening can also require several sessions to reach the right shade, and typically, the first session has more dramatic results than subsequent sessions.

Tooth colour is nuanced and it might be best to have the professionals help you choose the shade that’s best for you. At the end of the day, your smile is in your control, teeth whitening can be an important part of it.


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  • Written by Dr. Reena Kaloti

    Dr. Kaloti enjoys helping people, both at personally and professionally, and have fun while doing so. She always knew she wanted a job that allowed her to do that, and spent her childhood babysitting, lifeguarding, teaching swimming lessons, and volunteering in the geriatrics unit of her local hospital. She enjoys working with patients of all ages.

    Dr. Kaloti started studying dentistry in 2000 and graduated from the University of Saskatchewan with her DMD. After practicing dentistry for five years, she decided to take some time to focus on building her family. When she returned to work, Dr. Kaloti and Dr. Minhas decided to partner up and open up West 85th Dental. Their vision was to create a warm, inviting office and a pleasant and relaxing experience that would make their patients look forward to visiting.

    At West 85th Dental, we pride ourselves on providing comprehensive dental care to all our patients by providing thorough examinations, explaining our findings clearly, educating our patients about oral hygiene, and providing multiple treatment options that allow our patients to make educated decisions about their health and care.

    When Dr. Kaloti is not seeing patients, she spends her time doing charity runs, water sports, pilates, and spending time with her family.

    More Articles by Dr. Reena Kaloti

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    • Calgary, AB T3H 0V5

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