The embarrassment of having discolored and/or stained teeth can be monumental and negatively impact your love life, work career, interactions with others, on top of undermining your self-esteem. And it is this reality that urges many people to wonder what teeth whitening could do for their specific needs. However, before obtaining any “fix,” you really should get an understanding of what causes staining of your teeth. This important step will enable you to make the necessary lifestyle and behavioral changes to prevent future issues.

For example, letting us know which of the following common causes for staining teeth apply to you can be an excellent first step towards building an optimal action plan for brightening your smile.

Which of the following questions about discolored teeth apply to you?

• Staining from tobacco use?
• Staining from coffee, tea and/or wine?
• Your teeth have become progressively discolored and yellow with age?
• Staining from red (tomato-based) sauces, sodas/colas and blueberries among other things?
• Other family members have stained teeth so it seems to be genetic?
• Staining from medications such as the antibiotic tetracycline given as a child?

Your honest responses to the above, along with your medical history will enable us to formulate the appropriate therapy for brightening your smile. And for most people this includes bleaching, an inexpensive yet effective method for whitening teeth. It is most often accomplished using a gel that is between 15% and 35% carbamide peroxide, a type of hydrogen peroxide. Years of research have proven that this whitening agent does not damage tooth enamel or the nerves inside the teeth. The only side effect that some people experience is slight tooth sensitivity and irritation of the gum tissues. However, they both are usually temporary, often occuring when you first start bleaching and generally subside after a few days. You can learn more when you continue reading the Dear Doctor article, “Tooth Staining.” Or, you can contact us to discuss your questions or to schedule an appointment.

What causes stains on teeth?

Staining can occur on the outside surfaces of teeth and is caused by foods such as red wine, coffee, and tea, as well as by tobacco use. They can also be developmental, affecting the structure of the teeth due to excessive fluoride levels or from tetracycline antibiotics given during childhood to name a few. Changes in a tooth's enamel or dentin during tooth formation, or as teeth age, can also cause discoloration.

What is going on inside a tooth's structure that makes it look stained?

Most of a tooth's covering (95 percent) is composed of highly mineralized enamel. The crystals of enamel are contained in a framework, or matrix, of organic matter. Dentists believe that various organic compounds that get into this matrix can cause staining.

How do whiteners work?

Tooth whiteners or bleaches expose the teeth to a peroxide compound. This creates reactive oxygen that breaks down highly colored organic compounds within the tooth's sub-surface matrix, making the tooth look whiter, but without changing its internal structure.

What professional in-office whitening techniques are available?

During treatment, a high concentration of peroxide solution in the form of a gel is applied directly on the teeth, often with activation by a heat or light source. These systems use custom tailored trays fitted to an individual's mouth. Silicone barriers or protective gels are used to keep the peroxide gel away from the gums or sensitive membranes in the mouth.

How are professional home whiteners different?

Home whiteners involve a less concentrated solution of peroxide in a gel form. It is delivered to the tooth surface by a bleaching tray that is custom-made in your dentist's office. Over-the-counter whiteners such as whitening strips or paint-on formulas can also be used, but they take longer and they're not as effective — the more diluted solutions are used for safety.

Can toothpastes really whiten teeth?

Mild abrasives in toothpastes clean surface stains but cannot change the underlying tooth color or remove significant staining.

How long do the results last?

Usually, the results last from six months to two years, but effects will diminish over time. You can make them last longer by avoiding the foods and habits that cause staining.

Are teeth whiteners safe to use?

Teeth whitening products are safe if used according to our recommendations or the product manufacturer's directions. Peroxide products may be toxic if used in excess of recommended intervals and amounts.

Read more about teeth whitening in the article “Teeth Whitening, Brighter, Lighter, Whiter...” Contact us today to schedule an appointment or to discuss whether tooth whitening is right for you.