Maintenance work on the ZORA database servers is scheduled for Thursday 25th July 2019 from 19:00-20:00. During this period ZORA and JDB will not be available. Thank you for your understanding.
Buchalla, W; Imfeld, T; Attin, T; Swain, M V; Schmidlin, P R (2008). Relationship between nanohardness and mineral content of artificial carious enamel lesions. Caries Research, 42(3):157-163.