Professional Teeth Whitening Procedure

Professional teeth whitening , or in-office bleaching , is a popular and effective cosmetic dental procedure for lightening teeth and addressing discoloration caused by both extrinsic (such as coffee, tea, and tobacco) and intrinsic (such as aging) factors. Unlike at-home or over-the-counter products, in-office treatments use highly concentrated bleaching agents and are performed under the close supervision of medical professionals, ensuring safety and optimal results.

Working Mechanism

The tooth whitening process works through an oxidation reaction. The primary bleaching agent, usually hydrogen peroxide or carbamide peroxide, penetrates the outer layer of the tooth (enamel) and the underlying layer (dentin). There, the peroxide releases oxygen free radicals that break down the double bonds of stain-causing organic molecules (chromogens) into smaller, colorless molecules. This effectively changes the chemical structure of the stain, resulting in a lighter tooth color.

Clinical Procedures

Treatment at a dental clinic typically takes place in one visit, lasting approximately 60 to 90 minutes. The steps include:

1. Examination and Preparation: The dentist will perform an oral health exam to ensure healthy teeth and gums. A professional teeth cleaning (scaling and polishing ) is often performed first to remove plaque and tartar.
2. Soft Tissue Isolation: A protective barrier ( rubber dam or semi-rigid gel) is applied to the gums, lips, and cheeks to prevent the strong bleaching agent from irritating the surrounding soft tissue. The patient also wears protective eyewear, as shown in the image, to protect the eyes from bright light.
3. Gel Application and Activation: A high-concentration whitening gel (usually 25-40% hydrogen peroxide) is carefully applied to the tooth surface. A special light source, such as an LED light or laser, may be used to activate the gel and speed up the bleaching chemical reaction.
4. Repeat Sessions: The gel is usually left on for 15-20 minute intervals, rinsed off, and reapplied several times until the desired color is achieved.
5. Post-Treatment: Once completed, the gel is rinsed off, and sometimes a fluoride application is given to help reduce post-procedure tooth sensitivity.

Safety and Effectiveness

Professional teeth whitening is an efficient and minimally invasive method for achieving a brighter smile, with significant results visible in just one session. The effects can last between six months and three years, depending on the patient’s eating habits and oral hygiene.

The most common side effects are temporary tooth sensitivity and mild gum irritation, which usually resolve within a few days. Medical dr van dentist professionals are trained to minimize these risks through proper application technique and supervision during the procedure. An initial consultation with a dentist is essential to determine the most appropriate and safe method for your dental condition.