Objectives: To evaluate the available evidence that the use of arginine-containing dental care products prevents the development of new caries lesions and the progression of existing lesions. Search Methods: We performed a systematic literature search of databases including PubMed, the Cochrane Library and EMBASE. Selection Criteria: We selected randomized controlled trials of treatment with arginine in fluoride-containing dental products measuring dental caries incidence or progression in children, adults and elderly subjects. Data Collection and Analysis: Two review authors independently assessed trials for risk of bias and evaluated overall study quality using the GRADE classification. Main Results: Due to conflicts of interest and weak transferability to Swedish conditions, no conclusions can be drawn from studies on the effects of arginine-fluoride toothpaste in children. Arginine-containing toothpaste costs about 40% more than basic fluoride toothpaste; to determine whether it is more cost-effective, the higher cost must be considered in relation to any additional caries-preventive effect. The literature review also disclosed some questionable research ethics: in several of the studies, the children in the control group used non-fluoride toothpaste. Toothpaste without fluoride is not as effective against dental caries as the standard treatment - fluoride toothpaste - which has a well-documented effect. This contravenes the fundamental principles of research ethics. Conclusion: At present there is insufficient evidence in support of a caries-preventive effect for the inclusion of arginine in toothpastes. More rigorous studies, and studies which are less dependent on commercial interests, are required.

Keywords:
Arginine, Arginine-fluoride toothpaste, Caries, Caries prevention, Dental care
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2016
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