Teeth colour

Main Thing

The colour of our teeth is determined by the interaction of light with the tooth structure.

The outermost layer of the tooth, known as enamel, is semi-transparent and allows light to pass through. The layer beneath the enamel, called dentin, is typically yellowish and reflects light back out through the enamel. The thickness and composition of these layers can vary among individuals, leading to differences in tooth colour.

Over time, our teeth can change colour due to a variety of factors. Consuming certain foods and drinks, smoking, and the natural aging process can lead to the accumulation of stains on the enamel surface, causing the teeth to appear yellow, brown, or even grey.

Teeth whitening is a process that helps to remove these stains and lighten the colour of the teeth. It involves applying a gel containing hydrogen peroxide or carbamide peroxide to the surfaces of the teeth. These bleaching agents penetrate the enamel and react with the discoloured molecules, breaking them down into smaller, less pigmented components. This results in a brighter, whiter appearance of the teeth.

For example, a person who enjoys drinking coffee might notice their teeth becoming stained over time. They can use a teeth whitening treatment to break down the coffee stains and restore their teeth to a whiter shade.

Terms

• Enamel – the hard, outer surface layer of your teeth that protects against tooth decay. Example: Enamel erosion can lead to increased tooth sensitivity.

• Dentin – the layer of the tooth under the enamel, containing microscopic tubules that can cause tooth sensitivity when exposed. Example: When enamel wears away, the dentin can become exposed, causing pain.

• Teeth Whitening – a cosmetic dental procedure that aims to lighten teeth and remove stains and discoloration. Example: Many people use teeth whitening treatments before special events for a brighter smile.

An Analogy

Think of teeth like white t-shirts. Over time, they can get stained by coffee, wine, or smoking, just like a shirt can be stained by food or dirt. Teeth whitening is like using a strong detergent to remove those stains and restore the shirt to its original white color.

A Main Misconception

Many people believe that teeth whitening damages enamel, but when done correctly, it's a safe procedure. A common example of this misconception is someone avoiding whitening treatments due to fear of damaging their teeth, when in fact, professional treatments are designed to be safe for tooth enamel.

The History

Teeth whitening has been practiced for thousands of years, with ancient Romans using urine and goat milk in an attempt to make their teeth whiter. Modern teeth whitening began in the late 1980s when dentists started using peroxide-based compounds. The practice has evolved with better and safer methods now available globally."The best smile is the one that can be seen in the dark," once said a renowned dentist, emphasizing the impact of a bright smile.

Three Cases How to Use It Right Now

1. Before a Job Interview: A person might whiten their teeth to make a good impression. The main benefits of using this knowledge are increased confidence and a more professional appearance.

2. For a Wedding Day: A bride or groom opts for teeth whitening to ensure their smile looks its best in photos. The main benefits of using this knowledge are memorable photographs and a boost in self-esteem.

3. Maintaining Dental Health: Someone uses whitening toothpaste as part of their daily routine to prevent surface stains. The main benefits of using this knowledge are improved oral hygiene and a consistently brighter smile.

Interesting Facts

1. The hardest substance in the human body is tooth enamel.

2. Teeth can appear whiter or darker depending on the color of the clothes you wear.

3. Certain medications can cause tooth discoloration as a side effect.

4. Professional teeth whitening can lighten teeth by three to eight shades.

5. Strawberries contain malic acid, which is a natural enamel whitener.