Page 280 - IJB-10-4

International Journal of Bioprinting 3D printing prosthesis for palatal fistula

Figure 3. Computer fluid dynamics (CFD) pre-analysis prior to restoration. (A) The comparison of the cross-sectional area of the five sections before and
after repair shows that the cross-sectional area of the upper airway was significantly reduced after repair, indicating that the invalid cavity was eliminated.
(B) The sagittal air pressure on the healthy and affected sides was compared during inspiration. (C) The comparison of flow velocity between the healthy
and the affected side during inspiration shows that the outflow velocity of the fistula was significantly increased. (D) The pressure diagram of the restored
upper airway model during inspiration. (E, F) Comparison of the pressure and flow velocity of the five coronal sections before and after repair. (G) The
effect of the prosthesis design with different heights on the flow velocity after restoration

invalid cavities on the affected side is eliminated. The between the two sides tended to be the same after the
following conclusions were drawn by comparing the speech aid prosthesis was repaired. Figure 3G shows
pressure (Figure 3E) and flow velocity (Figure 3F) of the effect of the prosthesis design with different heights
the five coronal sections: (i) Accurate prosthesis repair on the flow velocity after restoration, indicating the
enables the closure of fistula and the elimination of importance of using CFD pre-analysis to guide the
invalid cavity. (ii) The pressure and velocity difference design before the prosthesis restoration.

Volume 10 Issue 4 (2024) 272 doi: 10.36922/ijb.2516