Questions and answers about Karex

Our enamel is made up almost exclusively of hydroxyapatite. Therefore, hydroxyapatite is used as a biomimetic agent in oral care. Many studies prove the benefit of hydroxyapatite in oral care/prophylaxis.

Yes, Karex protects against caries. The efficacy was confirmed in a clinical study. It shows that the hydroxyapatite toothpaste is just as effective in preventing caries as a fluoride toothpaste with amine fluoride and tin fluoride. There are also in vivo studies that describe the effective removal of plaque, gum protection as well as the formation of a protective layer when hydroxyapatite oral care preparations are used.

Yes, Karex also offer protection with reduced saliva. Traditional oral care products improve the natural remineralisation from saliva, but cannot be fully effective if the flow of saliva is reduced. Hydroxyapatite, the active ingredient in Karex, is already present in mineral form and does not have to be formed from the saliva through remineralisation processes.

Yes, many publications confirm the efficacy. In addition to laboratory studies (in vitro), these include studies with test specimens under oral cavity conditions (in situ) as well as clinical studies on patients (in vivo) in particular. Literature

Harks, I. et al. Impact of the daily use of a microcrystal hydroxyapatite dentifrice on de novo plaque formation and clinical/microbiological parameters of periodontal health. A randomized trial. PloS one 11, e0160142 (2016).

Lelli, M. et al. Remineralization and repair of enamel surface by biomimetic Zn-carbonate hydroxyapatite containing toothpaste: a comparative in vivo study. Front. Physiol. 5, 333 (2014).

Orsini, G. et al. A double-blind randomized-controlled trial comparing the desensitizing efficacy of a new dentifrice containing carbonate/hydroxyapatite nanocrystals and a sodium fluoride/potassium nitrate dentifrice. J. Clin. Periodontol. 37, 510-517 (2010).

Kani, K. et al. Effect of apatite-containing dentifrices on dental caries in school children. J. Dent. Health 19, 104-109 (1989).

No, Karex does not contain fluoride. Karex contains the biomimetic active ingredient hydroxyapatite, which prevents caries. 

The aroma contains menthol and eucalyptol. Please take this into account if you are undergoing homeopathic treatment.

Karex does not contain gluten.

Karex toothpaste and mouthwash have been developed for daily use, including on crowns or dentures.

No, Karex does not contain nanoparticles.

Karex does not contain any animal substances. Therefore, the Karex product range is vegan.

Questions and answers about Kinder Karex

Especially for children under the age of 6, the addition of fluoride to toothpaste is a subject of much debate. Children in particular swallow a lot of the toothpaste. However, the intake of other sources of fluoride (vitamin D preparations with fluoride, fluoride salt etc.) considerably increases the risk of fluorosis (discoloration of the teeth due to an elevated intake of fluoride). The Federal Institute for Risk Assessment states that when children's toothpaste containing 500 ppm fluoride is swallowed this results in the same intake of fluoride as, for example, from fluoride salt. Based on the new recommendations, the amount of fluoride swallowed can be doubled. In the case of toothpastes with a higher fluoride level (as of 1000 ppm), the risk of fluorosis is even greater.

Kinder Karex toothpaste uses the tooth-like active ingredient hydroxyapatite. When swallowed, it simply dissolves in the stomach.

Numerous studies have confirmed the efficacy of hydroxyapatite: This substance repairs enamel every time the teeth are brushed, minimises the build-up of bacteria and thus provides effective protection against caries.

Kinder Karex is suitable for babies as soon as the first tooth appears. The toothlike active ingredient hydroxyapatite also makes the toothpaste suitable for children from the age of 0 who are not yet able to spit out toothpaste properly. Infants, children and adolescents can use Kinder Karex to effectively protect their teeth from caries. The taste was chosen by children for children.

Around 97% of our enamel and about 70% of our dentine are made of hydroxyapatite. Enamel forms a protective outer layer for our teeth. Bacteria adhere to the enamel, producing harmful acids with the help of sugar from our food. These acids dissolve the enamel, resulting in caries.

Kinder Karex toothpaste contains the toothlike active ingredient hydroxyapatite, which adheres to the tooth during brushing. Brushing the teeth every day with the active ingredient hydroxyapatite can repair even small defects in the enamel and a protective layer is formed on the tooth. This protective layer makes it harder for bacteria to adhere to the teeth. Kinder Karex with hydroxyapatite thus offers effective protection against caries.

Kinder Karex toothpaste is also suitable for electric toothbrushes. Kinder Karex toothpaste is easy to dispense and can also be used on smaller toothbrush heads.

When developing Kinder Karex toothpaste, special care was taken to only use the ingredients that are necessary. Kinder Karex toothpaste contains hydroxyapatite as its main ingredient and it is free from fluoride, parabens and sodium lauryl sulphate.

Kinder Karex contains xylitol. Xylitol also helps to prevent caries.

The aroma contains very small amounts of menthol and eucalyptol. Please take this into account if your child is undergoing homeopathic treatment.

No. Kinder Karex does not contain any gluten and can be used with gluten intolerances.

Kinder Karex does not contain any animal substances and is therefore also suitable for vegans.