FIGURE 5.

Evaluation of the physical properties of the substances used in this study. A, Swelling test of VIEWGEL^®, Neoveil^®, and the hydrogel sheet. The degree of swelling of each material over time was calculated according to an established formula. B, Membrane permeation test of VIEWGEL^®, Neoveil^®, and the hydrogel sheet. The red line shows the amylase concentration in the donor chamber, and the blue line shows the amylase concentration in the acceptor chamber. In the VIEWGEL^® group, there was no increase in the amylase level in the receptor chamber. In the Neoveil^® group, amylase level reached equilibrium between the donor chamber and the receptor chamber. In the hydrogel group, the amylase level in the receptor chamber slowly increased