Hydroxylapatite: Enamel replacement in a tube
It is harder than steel and yet it’s good for your teeth. The mineral hydroxylapatite (HAP) hardens the enamel, reduces sensitivity to pain and gives teeth new pearlescence. It is included in Curaprox’s «Black Is White» toothpaste.
What do Sils in the Swiss Engadine valley, Badersdorf in Austria’s Burgenland and the Bavarian Fichtel Mountains have in common? Tourist attractions, certainly. Even more: these are locations where hydroxylapatite is found. A fairly rare mineral, which chemists also call hydroxylated calcium phosphate salt. But you don’t have to travel far to get it: HAP is contained in dentin, 70% of which consists of the mineral hydroxylapatite. Consisting of 95% hydroxylapatite, the enamel, or enamelum, is even the hardest substance in the human body - even harder than steel.
More effective than fluoride
Despite this property, tooth enamel remains vulnerable - from the acid produced by bacteria in the mouth, which can break down tooth enamel, however. Even foods or beverages such as energy drinks contain acidic compounds of this type. In contrast, fluoride toothpaste has been used for decades. Fluoride, a salt, hardens the tooth enamel by combining with it to prevent its surface from reacting to acid.
However, laboratory tests now show that hydroxylapatite enamel hardens more effectively than fluoride alone. Toothpaste containing fluoride only makes the enamel acid-stable. But toothpaste containing hydroxylapatite does more. With regular use, a smoothing protective layer of artificial enamel is even deposited on your teeth. This is also good for the look of your teeth: smoothed teeth glow with pearlescence.
Damaged enamel is remineralised
Ultrapure HAP microcrystals remineralise and hence recalcify damaged tooth enamel. They even mend microfine defects to the tooth’s surface and reduce the sensitivity of exposed tooth necks.
This is because HAP is not only good for tooth enamel but also for the dentine beneath it. Dentine is exposed when the gum line recedes. It contains less endogenous hydroxylapatite and is thus less hard. The result: sweet or sour, hot or cold foods cause short, stabbing pain.
Hydroxylapatite in the Black Is White and White Is Black toothpastes from Curaprox, however, closes the openings of exposed dentine, so that fewer painful stimuli reach the nerve.
What is more: because hydroxylapatite, unlike fluoride, also reaches deeper tooth layers, it can even combat incipient caries. So a trip to the Engadine, Burgenland or Bavaria is truly worthwhile.