Can our enamel regenerate itself?
Unlike other tissues in the body, enamel is a non-living substance. It’s the hardest substance in the human body and serves as a protective layer for the teeth. Once damaged or worn down, it cannot repair itself.
This is why it’s crucial to protect your enamel through good oral hygiene, a balanced diet, and regular dental checkups
How does Fluoride protect the enamel?
Fluoride is a mineral that plays a crucial role in oral health by strengthening tooth enamel. It works in two primary ways:
1. Remineralisation:
- Repairing Early Damage: Enamel is constantly undergoing a process of demineralization (loss of minerals) and remineralization (gain of minerals). Acids produced by bacteria in your mouth can cause demineralization, leading to tiny holes in the enamel.
- Strengthening Enamel: Fluoride helps to reverse this process by promoting remineralization. It incorporates itself into the tooth enamel, making it harder and more resistant to acid attacks.
2. Preventing Decay:
- Inhibiting Bacteria: Fluoride can interfere with the ability of bacteria to produce acid, reducing their capacity to damage enamel.
- Strengthening Developing Teeth: When ingested by children, fluoride is incorporated into developing teeth, making them stronger and more resistant to decay.
How does Fluoride promote the remineralisation process?
Fluoride plays a pivotal role in strengthening tooth enamel through a process called remineralization. Here’s a breakdown of how it works:
- Fluorapatite Formation: When fluoride comes into contact with tooth enamel, it combines with calcium and phosphate ions to form fluorapatite. This mineral is significantly harder and more resistant to acid attacks than the original hydroxyapatite found in tooth enamel.
- Accelerated Remineralisation: Fluoride speeds up the remineralisation process. It helps to deposit minerals back into the enamel, repairing tiny areas of demineralization caused by acids.
Protective Barrier: Fluoride can also form a protective layer on the tooth surface. This layer acts as a shield,reducing the ability of acids to dissolve enamel
Daily Fluoride Recommendation in Toothpaste
The recommended fluoride concentration in toothpaste varies based on age:
For Adults and Children Over 7:
- 1350 to 1500 ppm (parts per million) fluoride is generally recommended.
For Children Aged 3 to 6:
- Toothpaste should contain more than 1000 ppm fluoride.
For Children Under 3:
- Toothpaste should contain at least 1000 ppm fluoride.
Important notes:
- Amount of toothpaste: The amount of toothpaste used is also crucial. A pea-sized amount is sufficient for most children, while adults can use a slightly larger amount.
- Swallowing: It’s essential to supervise young children to minimize swallowing toothpaste, as excessive fluoride ingestion can lead to fluorosis (tooth discoloration).
- Individual needs: In some cases, your dentist may recommend a higher fluoride toothpaste for individuals at high risk of tooth decay.
Parts per million (ppm) is a unit of measurement used to express very small concentrations of a substance in a solution or mixture.
In simpler terms: If you had 1 million marbles, and one of them was red, the red marble would represent 1 ppm of red marbles in the total mixture.
