#$%^&*AU2018202538A120180510.pdf#####ABSTRACT The present invention relates to devices and methods for measuring the permeability of dentin. More particularly, the invention relates to devices and methods of quickly and accurately measuring the permeability of dentin using a flow cell. Figure 4Docket No.: JC05071USNP 135 110 116 135 135 4 ----.. -- - ---- ------ --------- --- ------ -,4 146' 142 148 144 118 FIG. 3 135 119 148a 116 114 x axis of XY 135 119 135 plane 1102 130 1--l181 148--- 144a-z ------ x'axis -X of 146 142 144 112 FIG. 4