Fluoride integrates into the crystal structure of enamel, converting hydroxyapatite into more resistant fluorapatite. This makes enamel harder and more acid-resistant. In German, the procedure is called Fluoridierung.
German professional bodies (DGZMK, BZĆK, KZBV) unanimously support fluoridation as one of the most effective methods of caries prevention.
Types of fluoride treatment
At-home fluoride
Fluoride toothpaste (1000-1500 ppm for adults, 500-1000 ppm for children under 6). Basic protection recommended for everyone. Brush twice daily for at least 2 minutes.
Professional fluoride application
Fluoride varnish (Fluoridlack) containing 22,600 ppm sodium fluoride. Applied by the dentist 2-4 times per year. Takes 2-3 minutes, completely painless. Especially recommended for high caries risk, sensitive teeth, or orthodontic treatment.
Deep fluoridation
A two-step procedure creating fluoride microcrystals within the enamel. Longer-lasting effect than standard varnish.
Fluoride for children in Germany
Since 2021, German guidelines recommend: from the first baby tooth, use toothpaste with 1000 ppm fluoride (rice-grain-sized amount). From age 2, increase to a pea-sized amount. Paediatric dentists apply fluoride varnish every 3-6 months.
Fluoride safety: the facts
Fluoride at recommended doses is safe. This is confirmed by WHO, the European Food Safety Authority (EFSA), and Germany's Federal Institute for Risk Assessment (BfR).
Fluorosis (white spots on enamel) occurs only with chronic excess fluoride during tooth development (up to age 8). With correct toothpaste dosing, this is virtually impossible.