Micro appearance of the enamel surface of dental fluorosis after different interventions: (a) etching for 30s group: incomplete etching of the enamel surface was observed (arrow); (b) etching for 60s group: a uniform depression around the enamel rod was evident, displaying an irregular honeycomb shape (arrow); (c) etching for 90s group: the dissolution of the enamel rod along with a smear layer on the enamel surface was visible (arrow); (d) etching for 30s after Er: YAG laser irradiating group: the enamel surface was pitted and the boundary around the enamel rod was clear (arrow); (e) etching for 60s after Er: YAG laser irradiating group: the enamel surface exhibited a uniform fish scale-like texture, with the center of the enamel rod being concave and the edge evident (arrow); (f) etching for 90s after Er: YAG laser irradiating group: irregular pits appeared on the enamel surface with enamel dissolution, and the boundary between the enamel rods became unclear (arrow).
per: Rui Xia (523256)
Publicat: (2025)