The Use of Customized Three-Dimensionally Printed Mandible Prostheses with a Pressure-Reducing Device: A Finite Element Analysis in Different Chewing Positions, Biomechanical Testing, and In Vivo Animal Study Using Lanyu Pigs

Table 6

Maximum values for total deformation, von Mises stress, von Mises equivalent strain, and principal stress of CMP-PRD and retentive screws by FEA under the clenching (CP1 to CP4), protrusion (PP1 to PP4), and right (RP1 to RP4) and left excursion conditions (LP1 to LP4) in the human model.

Human model	Total deformation max (mm)	Equivalent stress max (MPa)	Equivalent elastic strain max (mm/mm)	Strain energy max (mJ)	Equivalent stress max-ant. screws (MPa)	Equivalent stress max-post. screws (MPa)	Principal stress max-ant. mandible (MPa)	Principal stress max-post. mandible (MPa)
CP1	1.252	1250.275	0.022	0.520	227.200	430.912	56.589	91.526
CP2	1.871	1104.978	0.023	1.072	215.658	436.295	70.749	92.837
CP3	1.242	1198.720	0.023	0.541	219.410	459.747	54.929	95.803
CP4	1.751	1194.329	0.021	0.491	215.812	409.830	69.877	87.207
PP1	1.178	1323.087	0.022	0.546	115.568	420.086	49.051	87.805
PP2	1.310	1172.766	0.024	0.709	97.663	470.425	56.489	96.089
PP3	1.298	1270.596	0.023	0.702	98.762	465.359	56.551	94.826
PP4	1.341	1245.379	0.023	0.698	104.558	452.524	55.651	93.018
LP1	1.133	1319.820	0.022	0.511	132.779	459.036	52.796	95.807
LP2	0.955	1172.592	0.024	0.563	128.120	471.824	40.125	98.156
LP3	1.107	1264.902	0.024	0.467	129.189	483.623	48.622	98.668
LP4	0.914	1239.435	0.023	0.560	133.562	451.397	40.646	94.789
RP1	1.588	1369.503	0.021	0.915	111.398	409.992	71.491	88.334
RP2	1.959	1210.231	0.023	1.425	91.646	477.056	89.648	96.940
RP3	1.774	1308.170	0.023	1.233	92.033	463.897	83.644	95.229
RP4	1.991	1283.492	0.023	1.408	97.475	460.473	88.564	94.689