Causes of Tooth Discoloration

To understand how whitening works, it’s helpful to know what causes teeth to stain in the first place. Common causes include:

• Foods and Drinks: Coffee, tea, red wine, and berries can stain the enamel.

• Tobacco Use: Smoking or chewing tobacco causes yellowing and deep stains.

• Poor Dental Hygiene: Inadequate brushing and flossing can lead to plaque buildup and discoloration.

• Aging: As enamel wears down over time, the yellowish dentin underneath becomes more visible.

• Medications: Some antibiotics, antihistamines, and blood pressure medications can darken teeth.

• Trauma: Injury to a tooth may result in a darker shade.

Types of Teeth Whitening

1. In-Office Whitening:

   • Performed by a dentist.

   • Uses high-concentration bleaching agents (often hydrogen peroxide).

   • Results are immediate and more dramatic.

   • Often includes protective measures for gums and enamel.

2. At-Home Whitening (Professional Kits):

   • Provided by a dentist for home use.

   • Includes custom-fit trays and lower-concentration whitening gel.

   • Takes several days to weeks for noticeable results.

3. Over-the-Counter Products:

   • Whitening strips, toothpaste, pens, and rinses.

   • Less effective and slower than professional methods.

   • More affordable but with varied results.