Caries-preventing Effect of a Hydroxyapatite-toothpaste in Adults

Tooth Brushing HAP 2x daily repeated cleaning of all teeth 3 min. using a standardized electric tooth brush Electric (powered) toothbrushes (Oral-B; P\&G, Schwalbach, Germany), brushing head: medium; will be changed every 2 months and a non-fluoridated tooth paste containing microcrystalline hydroxyapatite . HAP-toothpaste (Karex toothpaste with 10 % hydroxyapatite) If a subject shows multiple carious lesions during the course of the study, the study dentist will decide whether the subject must be excluded from the study. In this case the subject will receive additional intensive caries prophylactic measures (e.g. chlorhexi-dine gel application, dietary counselling, etc.). Caries preventive treatment (removing caries and placing a restoration) by the study centers is offered.

Tooth Brushing F 2x daily repeated cleaning of all teeth 3min.using a standardized electric tooth brush ((Oral-B; P\&G, Schwalbach, Germany) and a fluoridated toothpaste (Karex Base with sodium fluoride 1450 F-), brushing head: medium; will be changed every 2 months If a subject shows multiple carious lesions during the course of the study, the study dentist will decide whether the subject must be excluded from the study. In this case the subject will receive additional intensive caries prophylactic measures (e.g. chlorhexidine gel application, dietary counselling, etc.). Caries preventive treatment (removing caries and placing a restoration) by the study centers is offered.