Dr Hardeep Bhatta & Dr Allen Friesen
Suite 205 - 1465 Salisbury Ave
Port Coquitlam, BC V3B 6J3
(604) 239-5954



Posts for tag: teeth whitening


Bright, naturally white teeth are a key component in a beautiful smile. But the opposite is also true: nothing diminishes an otherwise attractive smile more than stained or discolored teeth.

There is good news, however, about tooth staining: it can be greatly reduced with the right whitening technique. But before taking action we need to first uncover the cause for the staining — whether from the outside or inside of the tooth, or a combination of both.

If it’s an external cause — known as extrinsic staining — our diet is usually the source. Foods and beverages that contain tannins, like red wine, coffee or tea fall in this category, as do foods with pigments called carotenes as found in carrots and oranges. Besides limiting consumption of stain-causing foods and maintaining daily oral hygiene, you can also diminish extrinsic staining with a bleaching application.

There are two basic ways to approach this: with either a professional application at our office or with a home kit purchased at a pharmacy or retail store. Although both types use similar chemicals, the professional application is usually stronger and the whitening effect is obtained quicker and may last longer.

Discoloration can also occur within a tooth, known as intrinsic staining, and for various reasons. It can occur during tooth development, as with childhood overexposure to fluoride or from the antibiotic tetracycline. Poor development of enamel or dentin (the main sources of natural tooth color), tooth decay, root canal treatments or trauma are also common causes of intrinsic discoloration.

There are techniques to reduce the effects of intrinsic staining, such as placing a bleaching agent inside the tooth following a root canal treatment. In some cases, the best approach may be to restore the tooth with a crown or porcelain veneer. The latter choice is a thin layer of dental material that is permanently bonded to the outer, visible portion of the tooth: it’s life-like color and appearance covers the discoloration, effectively renewing the person’s smile.

If you’ve been embarrassed by stained teeth, visit us for a complete examination. We’ll recommend the right course of action to turn your dull smile into a bright, attractive one.

If you would like more information on treatments for teeth staining, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Teeth Whitening.”

By Smiling Creek Dental
July 23, 2014
Category: Oral Health

Have you heard the news about red wine? Every so often, the fruit of the vine is touted for some potential health benefit. Several studies over the past few years have suggested that it could help prevent heart disease and even certain types of cancer — only to have their conclusions called into question by new research. Just recently, newspapers trumpeted a new study from the Journal of Agriculture and Food Chemistry suggesting that certain chemicals in the vino might one day be used to help prevent cavities!

So is red wine good for your health, or isn’t it?

The jury’s still out. But there’s one thing we do know: Regardless of whether it has any affect on cavities, red wine is one of the major culprits in tooth staining.

Of course, it’s not the only offender: Coffee and tea, tobacco in any form, certain foods and some types of medications can all cause extrinsic stains on teeth — that is, stains that affect the exterior surface of the tooth. In addition, intrinsic stain — those that arise from the interior of the tooth — may be caused by root canal problems, or by certain dental filling materials.

If you have stained teeth — whether from red wine or another cause — can you do anything to make them whiter?

Oftentimes, the answer is yes — but finding the best way to do so can be challenging. You can begin by identifying habits and dietary factors that could cause staining. Then, reduce or eliminate the stain-causing factors, and enhance the beneficial ones. For example: stop smoking, modify your diet, practice regular, effective oral hygiene… and come in to the dental office twice a year for a professional cleaning and check-up. In addition, check whether any of your medications could cause staining or reduced saliva flow — a major contributor to the problem.

If making these changes isn’t enough to control teeth staining, the good news is that a number of treatments are available that can help bring your teeth back to a pearly shine — or even give you the “Hollywood white” smile you’ve always wished for. Depending on the cause of your teeth staining, and your desired level of brightening, these treatments can range from professional bleaching to porcelain veneers.

If your smile needs a little help to look its brightest, contact us or schedule an appointment to find out what we can do. For more information, see the Dear Doctor magazine articles “Tooth Staining” and “Important Teeth Whitening Questions Answered.”


Tooth whitening procedures and products have become increasingly popular over the last two decades. There are two main sources of application: professional procedures performed in a dentist’s office; and over-the-counter products for performing whitening applications at home. While there are pros and cons to both approaches, neither type poses a significant health risk — that is, if you match the correct product to the type of staining you have, and it’s applied according to the manufacturer’s instructions.

Although whitening treatments may differ in formula and strength, almost all use hydrogen peroxide as the bleaching agent, usually contained in carbamide peroxide which splits into hydrogen peroxide and urea upon activation. After many studies, there’s a strong consensus that hydrogen peroxide used at the levels found in whitening products doesn’t cause any harm to the body, including as a precursor to cancer.

But as the 16th Century Swiss physician Paracelsus once noted, “All substances are poisons… The right dose differentiates a poison from a remedy.” This is true of the chemicals that make up whitening products — they’re safe unless they’re overused. Going beyond their directions for use could lead to tooth enamel damage.

Further caution is also in order for teenagers using whitening products. Although they may have their permanent teeth (although younger teens may still have some primary teeth), the enamel layer is still developing and can be more vulnerable to damage from whitening chemicals than for adults.

The best approach for both a professional or home whitening procedure is to first seek consultation from our office. If nothing else, you should at least undergo a dental examination to identify the true cause of your teeth’s staining or discoloration. If the discoloration originates within the tooth, home applications and many professional treatments will not help if they bleach the outer surface only. We can also advise you on the proper application and dosage for a chosen product.

Using the right whitening product and in an appropriate manner will reduce the risk of injury to your teeth and overall health. And, the end result can be a brighter, more vibrant smile.

If you would like more information on tooth whitening, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Tooth Whitening Safety Tips.”

By Smiling Creek Dental
August 22, 2013
Category: Dental Procedures

Dental professionals sometimes use specialized words, and you may not be clear about exactly what we mean. Test yourself on some of the specialized vocabulary concerning tooth whitening. How many of the following can you define correctly?

1. Bleaching?
A method of making yellow, discolored teeth whiter. It is relatively inexpensive and safe, with few side effects.

2. External or extrinsic staining and whitening?
Extrinsic staining mainly results from diet and smoking. For example, foods such as red wine, coffee and tea can produce extrinsic stain. Teeth with these stains are bleached by placing whitening substance in direct contact with the living tooth surface.

3. Internal or intrinsic staining and whitening?
Intrinsic tooth discoloration is caused by changes in the structure of enamel, dentin, or pulp tissue deep within the root of the tooth. When the discoloration originates with the pulp tissue, root canal treatment may be needed to whiten the tooth from the inside.

4. Chromogenic material?
Color generating material that may get incorporated into the tooth's substance. It can be a result of wear and aging, or can be caused by inflammation within the tooth's pulp.

5. Carbamide Peroxide?
A bleaching agent discovered in the 1960s and frequently used for tooth whitening. When used, carbamide peroxide breaks into its component parts, hydrogen peroxide and urea, which bleach the colored organic molecules that have been incorporated between the crystals of the tooth's enamel.

6. Power Bleaching?
This technique is used for severely stained tooth. It uses a highly concentrated peroxide (35 to 45 percent) solution placed directly on the teeth, often activated by a heat or light source. This must be done in our office.

7. Tetracycline?
An antibiotic used to fight bacterial infections. It can result in tooth staining when taken by children whose teeth are still developing.

8. Rubber Dam?
Use of strong bleaching solutions requires protection for the gums and other sensitive tissues in your mouth. This is done using a rubber dam, a barrier to prevent the material from reaching your gums and the skin inside your mouth. Silicone and protective gels may also be used.

9. Whitening Strips?
Strips resembling band-aids that you can use in your home to whiten your teeth. They generally contain a solution of 10 percent or less carbamide peroxide gel. When using them, be sure to read the directions and follow them strictly to avoid injury or irritation.

10. Fade Rate?
The effects of bleaching may fade over time, from six months to two years. This is called the fade rate. It can be slowed down by avoiding habits such as smoking, along with food or drink that causes tooth staining.

Contact us today to schedule an appointment to discuss your questions about tooth whitening. You can also learn more by reading the Dear Doctor magazine article, “Teeth Whitening.”


The “Hollywood Smile” — dazzlingly white — is associated in our society with youth, health and vitality. Achieving that smile through either professional or home whitening applications has become very popular.

Teeth become discolored or dull for a number of reasons. It can be something intrinsic with the teeth — changes in enamel or dental structure during development, inherited disorders, heavy exposure to fluoride or tetracycline, or changes in mineral structure or wear due to aging. It can also be extrinsic, resulting from environmental or lifestyle causes. Eating foods with tannins (red wine, coffee or tea) or carotene pigments found in plant foods like oranges or carrots, or using tobacco may all cause staining.

Most modern applications involve an oxidizing chemical (usually hydrogen peroxide) that bleaches the teeth. Professional applications in a dentist's office use high concentrations of hydrogen peroxide (usually 35 to 45%) applied directly to the teeth with control measures to protect the lips and gums. This type of application can lighten the color of teeth up to ten shades.

There are a number of home options too: whitening strips, “Paint on” or “Brush on” whitening, and even whitening gum. We can also provide you with a “Take home” kit that resembles the professional application but is generally less expensive. Although all these home applications are generally safe and effective, they typically take longer for results (several repeated days as opposed to about one hour for an office application), and not always to the same level of lightness as the professional.

Just about anyone can be a candidate for a whitening application. However, if you have thinner than normal dentin and more porous enamel, or suffer from gum recession or enamel loss, then whitening may increase tooth sensitivity. And, whitening is not a permanent solution: the brightness will fade over time, usually within a year. You can slow the fading by avoiding foods and habits that contribute to staining. It's also possible to touch up the initial whitening once or twice a year to extend the life of your new, bright smile.

If you would like more information on teeth whitening, please contact us or schedule an appointment for a consultation. You can also learn more about this topic by reading the Dear Doctor magazine article “Teeth Whitening.”

By Smiling Creek Dental
June 13, 2013
Category: Dental Procedures

Nothing conveys confidence quite like a bright, white smile. Unfortunately, not all smiles are created equal. And, some smiles are much whiter than others. Whether your teeth have become discolored from food and drink or general wear and tear from aging, you may find yourself looking in the mirror one day wishing that there was a simple way to enhance your smile.

You've probably seen many over-the-counter products that claim to whiten your teeth. However, the strongest and fastest whitening solutions are those that are available in our office. There are many reasons why a professional whitening treatment might be the right solution for you. Here are a few:

  1. Economical. Whitening is one of the least expensive cosmetic remedies available to improve a faded smile.
  2. Convenient. Depending upon your time frame, you will be able to choose from whitening at home or in our office. With in-office whitening, we will apply a gel to your teeth and leave it on for about an hour. With take-home whitening, you'll receive custom-made trays that we will ask you to fill with the whitening gel and leave on your teeth 30 minutes a day, twice a week for about six weeks.
  3. Effective. With professional whitening, your teeth will get anywhere from three to eight shades lighter. It's a noticeable difference that will surely help you regain confidence in your smile.
  4. Low-Risk. Since whitening is a non-invasive procedure, the side effects are minimal. You may feel a bit of tooth sensitivity or gum irritation following treatment, but if such effects do occur, they will last no more than one to four days.
  5. Easy to Maintain. Whether you choose in-office or take-home, your whitening treatment will likely last from six months to two years. The good news is that your new white smile will be easy to maintain. By avoiding tobacco and foods containing tannins such as red wine, coffee and tea, you will be able to preserve the brightness of your smile. You should also continue your regular oral care routine of brushing twice a day and flossing daily.

If you would like more information about teeth whitening, please contact us or schedule an appointment for a consultation. You can also learn more by reading the Dear Doctor magazine article “Important Teeth Whitening Questions Answered.”

By Smiling Creek Dental
November 27, 2012
Category: Dental Procedures

If you cringe at the appearance of your less than pearly whites when you look in the mirror, you are not alone. A frequently requested cosmetic procedure, teeth whitening is a very successful and relatively inexpensive way to enhance your smile. We can determine which whitening treatment will work best for you after performing a basic oral examination in our office. When will it work and when won't it? Here's some background:

Teeth most commonly become stained or discolored due to surface (extrinsic) changes, the most common of which are dietary and smoking. Foods including red wine, coffee, and tea can cause extrinsic staining. Teeth can also commonly become discolored or stained due to intrinsic (internal) reasons, such as changes in the structure of enamel or dentin or by incorporation of chromogenic (color generating) material into tooth tissue during formation or after eruption.

  1. Toothpastes that claim to whiten teeth are only effective in removing plaque and other surface stains. Although most of these products contain mild abrasives that remove the plaque, they aren't capable of changing the underlying color of stained teeth.
  2. Tooth polishing by your dentist or dental hygienist is effective in removing superficial staining, but will not change tooth color.
  3. Teeth whitening systems work by bleaching, generally with the use of hydrogen peroxide. Using bleaching gels in custom made trays or whitening strips can be done at home, but is slow and the changes are gradual. We can perform quicker and more effective “power bleaching” in our dental office when precautions can be taken to ensure safety due to the higher concentrations of bleaching gels used. Teeth with intrinsic (internal) staining may need internal bleaching to whiten them and this can only be done in the dental office.
  4. Teeth whitening results fade over time, but optimally last from six months to two years. Taking care of your newly whitened teeth by avoiding the foods, beverages, and habits that cause staining will help them remain whiter for longer.
  5. If you have had previous cosmetic dentistry performed, including the placement of composite restorations, porcelain veneers, or crowns, teeth whitening may not be for you. Bleaching agents have little to no effect at all on the materials used to create these restorative products.

If you would like to discuss whitening your teeth with us, call today to make an appointment. To learn more about the various teeth whitening procedures, read the Dear Doctor magazine article “Teeth Whitening: Brighter, Lighter, Whiter…”

By Smiling Creek Dental
May 30, 2012
Category: Dental Procedures
Tags: teeth whitening  

If you have discolored teeth, the cause is often staining on the enamel surfaces from foods, beverages, or smoking. But tooth discoloration may also originate deep within the root of a tooth. Sometimes this happens to a tooth that had to have earlier root canal treatment because of injury or decay.

In such cases the living pulp tissue and its blood vessels and nerves had to be removed from the root canals, resulting in the death of the dentin layer, which makes up most of the tooth's body. Over time this caused the dentin to darken. The color may come from remains of blood that was left in the tissue, or from filling materials left in the root canal that are showing through.

Since these stains are caused internally (intrinsic) and not on the outside of the tooth (extrinsic) they must be whitened from the inside. This is usually done by putting a bleaching agent into the empty chamber from which the pulp was removed. Usually the bleaching agent is a substance called sodium perborate.

When it is mixed with a solution of hydrogen peroxide, sodium perborate slowly bleaches the color from the tooth's internal material. It is considered to be safe and reliable for this use.

The work begins by taking x-ray images to make sure that the root canal is correctly sealed and the bone is healthy. After this, we will make a small hole in the back of the tooth through which the root canal space will be cleaned. The root canal space will be sealed and the bleach will be applied in a putty-like form and sealed off from the rest of your mouth. Every few days this procedure will be repeated until the bleaching reaches the desired level.

At this point a tooth-colored composite resin will be used to seal the small hole that was made in the dentin to insert the bleach. After the tooth has reached the level of whiteness that matches it to your other teeth, veneers or crowns must sometimes be used to repair the surface if it is chipped or misshapen, for example.

Contact us today to schedule an appointment to discuss your questions about whitening internally discolored teeth. You can also learn more by reading the Dear Doctor magazine article “Whitening Traumatized Teeth.”