Teeth Whitening

Calgary Teeth Whitening Studio

Girl smiling after Teeth Whitening treatment

Increasing efficiency, effectiveness, and comfort

Teeth whitening is actually an umbrella term that refers to the removal of stain on your teeth, despite most people making the association to bleaching. The type of whitening treatment dental hygienists use depends on the type of stain that is present. There are two main types of stain, extrinsic and intrinsic.

Extrinsic Stain

Extrinsic stain is usually caused from external sources such as tea, coffee, red wine, blueberries, tobacco, chromogenic bacteria, poor oral hygiene, etc. These types of stains do not stick to smooth tooth surfaces- which is partially why some people stain more than others, even if they drink the same amount of coffee or smoke the same amount. Significant contributing factors to tooth roughness includes plaque and calculus, with which the stain adheres to. Bleaching will therefore not actually remove this type of stain. Extrinsic stain requires a mechanical removal- with teeth polishing and/or dental scaling.

Extrinsic Stain
Intrinsic Stain

Intrinsic Stain

Intrinsic stain may also be caused from several factors, including fluorosis, demineralization, hypocalcification, and tetracycline use during tooth development. Each of these conditions can cause white and/or brown spots on teeth. While these specific types of conditions are incredibly difficult to treat with teeth whitening, there are a few conditions that respond well to bleaching. Sometimes long-term tooth exposure to certain extrinsic stains such as tea/coffee and tobacco, can cause the darkening of the teeth themselves. Once the extrinsic stain has been effectively removed, the intrinsic stain requires chemical removal with a bleaching technique. Genetics also plays a role in intrinsic staining- not everyone is born with the same shade of tooth colour. Teeth bleaching treatments may be able to whiten the natural colour of your teeth.

Teeth Bleaching

Teeth bleaching for intrinsic stain first requires an assessment from one of our dental hygienists to ensure the teeth and gums are healthy enough to undergo the treatment, and that bleaching is the appropriate treatment for your concern. At Grinn, we work with a bleach which is vegan and gluten free, and also contains potassium nitrate to help reduce sensitivity experienced during and after treatment. Teeth bleaching can be done in-studio or with a take-home kit provided by your dental hygienist.

In-Studio Bleaching

At Grinn, we use a combination of hydrogen peroxide and carbamide peroxide, which is a chemically activated teeth bleaching treatment that does not require the use of a light to activate the bleach (what is commonly referred to as “laser whitening”). Bleaching sessions take roughly an hour and a half, where your dental hygienist will use a shade guide to determine your starting colour and will apply a protective material to your gums and then the highly concentrated bleach to your teeth. Each round of bleaching will last around 20 minutes, and up to 3 rounds can be completed in a session. Once we have completed the session, we will use the shade guide to show you the colour change! We will also take a 3D scan of your teeth and create custom whitening trays for you to take home for touch-up treatments which you will pick up from us a week later.

girl doing Teeth Bleaching at home

At-home bleaching

You can choose to do bleaching in the comfort of your own home! For at-home bleaching, we take the 3D scan of your teeth and create a custom bleaching tray for you to take home and use with the bleaching gel that we provide you with. We carry a few different concentrations of the take-home bleach, and your dental hygienist will be able to help you determine which one is best for you. Your custom teeth bleaching trays may be kept and used for as long as they fit, and you only need to purchase refills of the bleaching gels as you require them.


Frequently Asked Questions

Initially, you will bleach daily until you reach your desired shade. After that, you simply do touch-ups at home as needed.

The type of bleaching we do does not require light (laser) activation, the bleach is already activated when we apply it to your teeth.

Temporary sensitivity is a common experience while you are doing teeth bleaching. We always recommend using a desensitizing toothpaste for 2 weeks prior and after bleaching. Our bleach does contain desensitizing agents to further reduce sensitive teeth during treatment.

In-studio bleaching – $400/session
Initial full take home kit (includes custom bleaching tray) – $250
Refill bleach syringe – $15

We strongly recommend that you wait until your orthodontic treatment is completed before you do teeth bleaching.