Inclusion Criteria:  Written declaration of informed consent signed by parents/guardians; Age between 4-5 years and 6-7 years; Good general health, as assessed by the examiners; Agreement of not to use any oral hygiene products except for the toothpastes provided for the duration of the study.  Exclusion Criteria:  Ongoing oral or dental treatment except for emergency treatment; Known allergic reaction to an oral hygiene product and/or medication and/or dental material previously used in the mouth or pharynx; Allergy to one of the components of the test products or the standard toothpaste; Participation in another clinical trial either currently or within the last 30 days; Antibiotic therapy within the past 3 months.