Stained or yellowing teeth are one of the most common cosmetic concerns patients bring to our Pickering dental office. If you are exploring teeth whitening in Pickering, understanding the difference between professional and at-home options can help you choose the method that delivers the results you want without wasting money on products that underdeliver.
At Ivory Dental, Dr. Claudia Wood offers professional whitening treatments that produce noticeable results in a single visit. Here is how they compare to the strips, trays, and pastes you find at the drugstore.
Why Teeth Become Discoloured
Before choosing a whitening method, it helps to understand what caused the staining. Extrinsic stains sit on the tooth surface and are caused by coffee, tea, red wine, tobacco, and certain foods. These respond well to both professional and over-the-counter whitening.

Intrinsic stains occur inside the tooth structure and can result from aging, certain medications like tetracycline, excessive fluoride exposure during childhood, or trauma. Intrinsic staining is harder to treat and often requires professional intervention or cosmetic dentistry alternatives like veneers or bonding.
Professional In-Office Whitening
Professional whitening at Ivory Dental uses a higher concentration of bleaching agent than anything available over the counter. The procedure takes about 60 to 90 minutes and can lighten teeth by several shades in a single appointment.
Dr. Wood first protects your gums with a barrier, then applies the whitening gel to your teeth. A special light may be used to accelerate the process. The controlled environment ensures even coverage and minimizes sensitivity.

The main advantages of in-office whitening are speed, consistency, and safety. Results are visible immediately, the treatment is supervised by a dental professional, and the risk of gum irritation is lower than with poorly fitting drugstore trays.
At-Home Whitening Options
Over-the-counter whitening products use lower concentrations of hydrogen peroxide or carbamide peroxide. Options include whitening strips, paint-on gels, whitening toothpaste, and generic tray kits.
Whitening strips from brands like Crest 3D White are the most effective OTC option. They typically require 14 days of daily use to achieve noticeable results. Whitening toothpastes remove surface stains through mild abrasives but do not change the actual colour of your teeth.
Custom take-home trays from your dentist offer a middle ground. Dr. Wood takes impressions of your teeth to create trays that fit precisely, ensuring even gel distribution and reducing gum irritation. You wear them for 30 minutes to two hours daily over one to two weeks.
Professional vs At-Home: A Side-by-Side Comparison
Professional in-office whitening costs more upfront but delivers faster, more dramatic results under supervised conditions. At-home products cost less but take longer, produce more subtle changes, and carry a higher risk of uneven whitening or sensitivity from ill-fitting trays.

For patients with deep staining, multiple OTC kits may be needed to approach the results of a single professional session. This can make the total cost comparable while producing inferior outcomes. A professional teeth cleaning before whitening also improves results by removing plaque and tartar that block the bleaching agent.
How to Maintain Your Results
Regardless of the method you choose, whitening results fade over time without maintenance. Avoid staining foods and drinks for 48 hours after treatment. Use a straw for coffee and tea. Brush twice daily and schedule regular cleanings to remove surface stains before they set in. According to the Canadian Dental Association, professional whitening results can last one to three years with proper care.
Frequently Asked Questions
Is teeth whitening safe for sensitive teeth?
Yes, but professional supervision is recommended. Dr. Wood can adjust the bleaching concentration and apply desensitizing agents to minimize discomfort during and after treatment.
How white can my teeth actually get?
Most patients achieve two to eight shades lighter with professional whitening. Results depend on the type and severity of staining, natural tooth colour, and the method used.
Can whitening damage my enamel?
When used as directed, professional whitening products do not damage enamel. Overuse of OTC products, especially abrasive whitening toothpastes, can wear down enamel over time.
Want a brighter smile? Call Ivory Dental at (905) 839-9663 to book a teeth whitening consultation in Pickering. Dr. Claudia Wood will recommend the best approach for your staining type and budget.
About the Author
Dr. Claudia Wood, DDS
Dr. Claudia Wood, DDS, is the owner and lead dentist at Ivory Dental in Pickering, Ontario. With years of experience in general, cosmetic, and restorative dentistry, Dr. Wood is committed to providing personalized, gentle dental care for patients of all ages. She holds a Doctor of Dental Surgery degree and stays current with the latest advancements in dental techniques and technology to deliver the highest standard of care.
✓ Medically Reviewed by Dr. Claudia Wood, DDS
Ivory Dental · 1300 Kingston Road Unit #3, Pickering, ON · (905) 839-9663


