Following an application from Cargill R&D Centre Europe, submitted for authorisation of a health claim pursuant to Article 14 of Regulation (EC) No 1924/2006 via the Competent Authority of Belgium, the EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) was asked to deliver an opinion on the scientific substantiation of a health claim related to sugar-free hard confectionery with at least 90% erythritol and reduction of dental plaque which reduces the risk of caries. The food proposed by the applicant as the subject of the health claim, sugar-free hard confectionery with at least 90% erythritol, is sufficiently characterised. In the context of this application, the weight of dental plaque, and/or the counts of Streptococcus m...