What is Demineralisation? | Main Causes of Demineralisation | What is Remineralisation? | How to Support Remineralisation | FAQ |
Quick Answer
Demineralisation is the loss of minerals from tooth enamel, increasing the risk of cavities. Remineralisation is the natural repair process, where minerals are restored, strengthening teeth and reversing early damage.

Introduction
Your teeth are constantly exposed to cycles of mineral loss and repair. Demineralisation weakens enamel, while remineralisation restores lost minerals and helps prevent cavities. Understanding these processes is key to maintaining strong, healthy teeth.
Understanding Tooth Demineralisation
What is Demineralisation?
Demineralisation happens when minerals like calcium and phosphate are lost from tooth enamel due to acids in the mouth. This weakens teeth and, if left unchecked, leads to cavities.
- Acidic conditions remove minerals from enamel, making teeth more vulnerable to decay.
- Ongoing demineralisation can cause permanent tooth damage and cavities.
Main Causes of Demineralisation
Several factors increase the risk of enamel mineral loss:
- A high sugar diet feeds acid-producing bacteria.
- Plaque build-up harbours these bacteria and their acids.
- Reduced saliva flow, often from dehydration, means less natural protection.
Understanding Tooth Remineralisation
What is Remineralisation?
Remineralisation is the process where lost minerals are redeposited into enamel, often from saliva or an external source. This can reverse early enamel damage and prevent cavities.
- Early enamel damage can be reversed through remineralisation if caught soon enough.
- This process strengthens teeth and helps prevent decay.
How to Support Remineralisation
Healthy habits can help your teeth stay strong and repair early damage:
- Eat a balanced diet low in free sugars and rich in minerals.
- Brush twice daily with hydroxyapatite toothpaste to support enamel repair.
- Stay well hydrated to maintain saliva flow.
In Summary
Demineralisation weakens enamel and can cause cavities, while remineralisation repairs early damage and strengthens teeth. Good oral hygiene, a healthy diet, and staying hydrated help keep your teeth in balance.
FAQ
Can early tooth damage be reversed?
Yes, early demineralisation can be reversed through remineralisation with good oral hygiene.
What foods help remineralise teeth?
Foods high in calcium, like dairy and leafy greens, support enamel repair.
Does fluoride help with remineralisation?
Yes, fluoride in toothpaste and water enhances remineralisation and protects against acid, however, it can have other potentially negative health effects.
Are there effective alternatives to fluoride?
Yes, toothpaste containing Nano-Hydroxyapatite is an effective alternative to fluoride with no known health risks.
How can I tell if my teeth are demineralising?
White spots or sensitivity can be early signs. See your dentist for assessment.
