Teeth Whitening

Tooth color varies among individuals and is influenced by genetic factors, age, dietary habits, and environmental conditions. Over time, discolorations may occur due to tea, coffee, tobacco use, certain medications, excessive fluoride exposure, or trauma.

Tooth whitening (bleaching) is a controlled procedure used to lighten intrinsic and extrinsic discolorations of the teeth. It may be applied to a single tooth or multiple teeth and typically results in an average shade improvement of 1–2 levels.

Bleaching must always be performed under the supervision of a dentist. Uncontrolled over-the-counter products may damage the enamel and gingival tissues. Prior to treatment, a comprehensive dental and periodontal examination is required; any caries, calculus, inflammation, or enamel cracks must be treated beforehand, as these conditions may increase postoperative sensitivity.

Tooth whitening should not be confused with polishing, which is intended to remove calculus and surface stains. While polishing eliminates external stains such as those caused by tea or tobacco, bleaching lightens the natural color of the tooth.

Tooth Whitening Methods

1. Home Bleaching

Impressions of the upper and lower arches are taken to fabricate custom-made transparent trays.

A low-concentration whitening gel is applied to the trays.

According to the dentist’s instructions, the trays are typically worn for 2–6 hours per day over a period of 7–14 days.

When used correctly, this method does not harm the teeth or gingiva.

2. Office Bleaching

The procedure is performed in a clinical setting by the dentist.

The gingiva is protected with a special barrier, and the whitening gel is applied to the teeth.

The gel is activated using a light or heat source in 15-minute cycles, repeated 2–3 times.

The procedure lasts approximately one hour and provides noticeable results in a single session.

For the first 48 hours after treatment, patients are advised to avoid smoking, tea, coffee, wine, and highly pigmented foods.

3. Combined System

Home bleaching is performed first, followed by an in-office bleaching session. This approach is particularly effective for dark and stubborn discolorations.

Post-Whitening Recommendations

A “white diet” should be followed for the first 24–48 hours.

Any sensitivity experienced is usually temporary and resolves within a few days.

To maintain long-lasting results, regular oral hygiene practices and routine dental check-ups are essential.