FIG. 11.

Proof-of-concept prosthetic ear with complex details. Designed helix and antihelix profiles were printed as intended. The printing time was 3 h and the infiltration process took 1 h. Adding in drying and curing times, this approach can be easily adapted to the clinic, with a delivery time to the patient of ≤2 days. (a) 3D model of ear-shaped structure. (b) Noninfiltrated porous prosthesis. (c) Silicone infiltrated prosthesis. No noticeable step lines were observed, which may allow for the direct 3D printing of detailed prostheses that require minimal touch up, such as polishing or coating. (d) x- and y-dimensional accuracy of rectangular samples. Parts shown were infiltrated with silicone resin that had been diluted (i.e., 35% HMDS). Color images are available online.