Page 157 - IJB-8-1

Lin, et al.
Table 3. Top five worst cases and corresponding Z and SD values.
j
Top five worst cases V Z ABL Z BBL Z CBL Z ABH Z BBH Z CBH Z ABT Z BBT Z CBT SDZ SDZ≤1.0
value
1 17.51 −0.13 0.80 1.20 0.70 −0.21 −1.17 2.38 1.27 1.98 1.06 X
2 15.43 0.48 −0.32 −1.02 2.21 0.96 0.26 1.99 0.10 1.27 1.00 X
3 13.71 −0.44 1.16 1.78 0.14 0.79 −0.08 −0.02 0.58 0.79 0.66 O
(worst case)
4 12.31 0.15 0.72 0.88 1.21 −0.29 −0.32 0.39 0.31 0.82 0.49 O
5 12.14 0.62 0.58 1.04 0.66 1.54 0.25 0.06 −0.15 −1.41 0.78 O

Table 4. Main dimensions of C, B, and A + B reconstructed implants.
Implant C Implant B Implant A + B

L 43.0 L 46.0 D Ø 2.6
D Ø 2.6 D Ø 2.6 H1 18.0
H 17.7 H 19.0 H2 15.0
T1 8.4 T1 7.6 H3 34.0
T2 2.8 T2 2.8 T1 7.6
Unit: mm T2 2.8

Bone graftff
Bone graft
Extended side wing
Round edge
Round edge
1 1/2 of the segmental/2 of the se
bone height
bone he
Flap tissue

2/3 of the segmental
2/3 of the segmental
hi k
b bone thickness
Figure 2. Clinical design consideration of a reconstructed implant in large defect segment.
the soft tissues such as blood vessels (Figure 2). Table 4 a CAD system with 3 mm diameter and 15 mm length
shows the reconstruction implant C, B, and A+B main aligned to the left/right canine, side incisor and incisor
dimensions. positions, and four other implants with 4.5 mm diameter
and 14 mm length aligned to the 1 /2 premolar and
nd
st
2.3. FE and weight topology optimization analysis molar positions were inserted into C and B/A+B
Solid models of B, C, and A+B reconstructed implants segmental bone grafts, respectively. These implants were
and corresponding fixation screws, bone graft, and used to simulate the post-operative prosthesis to receive
remaining bones were exported into ANSYS Workbench corresponding occlusal loads. Three FE models were
(ANSYS Workbench v18.2, ANSYS Inc., PA, USA) for generated using quadratic 10-node tetrahedral structural
simulation. Six-cylinder solid dental implants deigned in solid elements after mesh convergence tests (Table 5).

International Journal of Bioprinting (2022)–Volume 8, Issue 1 143