Concentration of hydroxyl groups in dental apatites: a solid-state 1H MAS NMR study using inverse 31P → 1H cross-polarization†
Abstract
The concentration of structural hydroxyl groups in the apatite mineral of enamel, dentin and cementum of healthy human teeth was estimated by reference to stoichiometric hydroxyapatite to be 73 ± 3, 18 ± 2 and 18 ± 1%, respectively.