Dental Myths

Dr. Iva Ehrlicher, dentist and founder of densiva, debunks the biggest myths about oral care. 

1. "Toothpaste has to foam, otherwise it doesn't clean."

False. The foam comes from SLS (sodium lauryl sulfate), a surfactant that can irritate the mucous membrane and disrupt the natural protective barrier. Teeth need a mild cleaning that does not destroy the natural oral microbiome. The mucous membrane is extremely permeable, allowing unwanted substances to enter our body directly.

2. "Whitening toothpaste makes teeth white."

Caution. The abrasive particles remove superficial stains, but at the expense of tooth enamel. Teeth end up looking darker and becoming more sensitive.

3. "Mouthwash provides fresh breath and is healthy."

This is more dangerous than it sounds. Antibacterial mouthwashes not only kill harmful bacteria, but also beneficial bacteria, including those important for vascular health and blood pressure regulation. Studies show up to an 85% increased risk of high blood pressure with daily use.

4. "If I don't have any complaints, everything is fine with my teeth."

This is the myth I hear every day. But tooth decay and periodontitis are chronic, silent

inflammations. They start painlessly and only become noticeable when it is often already too late. Regular preventive care actively protects your teeth, because pain is a late signal.

5. "Sugar-free drinks are good for your teeth."

Many are highly acidic, lower the pH value and promote demineralization, which in turn leads to tooth decay. Not sugar alone is the problem, but the environment it creates.

6. "Bad teeth are inherited."

Genes play a role, but saliva, diet and care control the system daily.

What often matters more are habits and environment, not fate.

7. "Oral health has nothing to do with the body."

False. Inflammation in the mouth has systemic effects. Germs and inflammatory messengers enter the bloodstream directly through the mouth. The connection to heart disease, diabetes, Alzheimer's and 40 other diseases has been scientifically proven.

8. "Brushing teeth directly after eating protects the teeth."

False - it even harms them. After meals, the pH value is lowered, and brushing would now directly erode the enamel. Please wait at least 30 minutes for the saliva to neutralize.

9. "White teeth are healthy teeth."

Not necessarily. Color says nothing about the condition. Yellowish teeth can be perfectly healthy, while immaculately white ones can be deeply decayed.

10. "Flossing causes gum bleeding"

This is one of the most common reasons why people stop flossing. Bleeding when flossing is almost always a sign of existing inflammation. The only solution: continue flossing, as bacteria between the teeth must be removed. Stopping risks serious consequences.

Oral health has long been more than just dental care. It influences our well-being, our appearance and even our general health. This is exactly where Dr. Iva Ehrlicher's brand densiva comes in: scientifically sound, modern in its approach and with a clear focus on holistic oral care.