Bleaching Treatments

Teeth whitening is not provided in-office; however, you can talk to our staff about the different options available for achieving a brighter smile. For at-home whitening, carbamide peroxide is more commonly used, working more slowly as it breaks down into hydrogen peroxide and delivers about 30 percent of its effectiveness. Regardless of the method, multiple treatments are often needed to achieve the desired shade of whiteness.

Tooth Enamel And Dentin

Healthy white teeth are protected by enamel, a hard, porcelain-like tissue that is even stronger than bone. Tooth enamel is made of microscopic crystalline rods that shield the teeth from chewing forces, bacteria, and the acids found in foods and drinks. Beneath the enamel lies dentin, a core layer that is naturally yellow and, in some cases, may appear greenish-gray. Over time, tiny cracks form in enamel due to daily chewing. These cracks, along with spaces between the enamel rods, can collect stains and debris, causing teeth to look dull. As enamel thins with age, the underlying dentin becomes more visible, making discoloration more noticeable.

Tooth Discoloration Causes

To understand staining, it is important to distinguish between extrinsic and intrinsic discoloration.

• Extrinsic stains – These form on the outer surface of the teeth and are often removed with brushing or professional cleanings.
• Intrinsic stains – These stains occur inside the tooth and may develop from trauma, excessive fluoride intake, or certain medications taken during tooth development.

Intrinsic stains were once thought resistant to bleaching, but advancements in cosmetic dentistry now allow dentists to address them with customized whitening kits. Regular whitening over time, sometimes for weeks or months, can significantly lighten deeper stains. Other factors also influence tooth color, such as genetics, enamel thickness, and translucency. Smoking, certain medications, and frequent consumption of dark-colored foods or beverages can accelerate staining. Maintaining good oral hygiene is key to preserving whitening results.

Risks Of Teeth Whitening

Although generally safe, teeth whitening does have some risks. Some patients report temporary gum irritation after peroxide treatments, which usually subsides within a few days. Higher concentrations of bleaching agents can also cause short-term tooth sensitivity, particularly for those with gum recession. It is also important to note that dental restorations such as crowns, veneers, or bonding do not respond to whitening agents. This may leave the treated teeth looking brighter than surrounding restorations, creating a mismatched appearance. If you are considering whitening treatment, consult our team at Sue Walker Dentistry. We will review your medical history, oral health, and lifestyle habits to recommend the safest and most effective whitening plan for you. Call us today at 971-447-4385 to schedule your consultation.