Fig. 8

In vivo remineralization experiment of demineralized dentin of rabbits. a The rabbit dentins were etching by 37% phosphoric acid for 15 s. b The demineralized dentins were obtained after rinsing and gentle drying. c The mineralizing film attached on the demineralized dentin surface was covered with a transparent customized tray. d–f TEM images of the demineralized dentin treated with the mineralizing film for 7 days show that the remineralized layer was approximately 600 nm thick [d, the magnified images of d (e, f)]. The SAED patterns (insets in e) reveal 002, 004, and 211 diffraction rings. f The HRTEM image shows two interplanar spacings: 0.34 nm and 0.28 nm. ID, intact dentin; DD, demineralized dentin; RD, remineralized dentin