Figure 2
From: The effect of cold-light-activated bleaching treatment on enamel surfaces in vitro
Pre-treatment and post-treatment XRD patterns of specimen. (a) Group LP. ‘HA’ and ‘CHA’ refer to ‘hydroxyapatite’ and ‘carbonated hydroxyapatite’, respectively. Arrows indicated the obvious difference between the pre-treatment and post-treatment XRD patterns. (b) Group P. ‘HA’ and ‘CHA’ refer to ‘hydroxyapatite’ and ‘carbonated hydroxyapatite’, respectively. Arrows indicated the obvious difference between the pre-treatment and post-treatment XRD patterns. (c) Group NP. ‘HA’ and ‘CHA’ refer to ‘hydroxyapatite’ and ‘carbonated hydroxyapatite’, respectively. (d) Group L. ‘HA’ and ‘CHA’ refer to ‘hydroxyapatite’ and ‘carbonated hydroxyapatite’, respectively. XRD, X-ray diffraction.
