Page 273 - IJB-10-5

International Journal of Bioprinting A TPMS framework for complete dentures

sample models were prepared according to the dimensions Section 2.3.1., and the weights were measured to compare
specified in the GB/T229-2007 standard (55 × 10 × 10 the reduction effects with solid frames.
mm), as depicted in Figure 7B. A V-shaped notch was
introduced into the sample, and the impact toughness and 3. Results and discussion
absorbed energy were measured.
3.1. Finite element analysis
For the three-point bending test, the porous samples 3.1.1. TPMS-based gradient porous structures
with dimensions of 5 × 5 × 40 mm (Figure 7C) were The total deformation cloud, von Mises cloud, and
subjected to a bending force using the electromechanical equivalent plastic strain cloud distributions from
universal testing machine (Empyrean; Malvern Panalytical, compression finite element (FE) simulations are selectively
UK). The loading speed was set at 1 mm/min to determine
the flexural strength and deformation behavior of samples depicted in Figure 8 for structures with superior mechanical
under bending conditions. characteristics (B-I), inferior performance (A-II), and the
homogeneous reference (C-III), representing a subset
2.3.2. Functionally graded TPMS framework of the extensive data set. It is observed from the cloud
After obtaining the porous denture framework models, diagram that inconspicuous stress concentration occurs
samples were fabricated using the parameters outlined in during the compression process. The location of the stress

Figure 8. Total deformation cloud, von Mises cloud, and equivalent plastic strain cloud of (A) A-II, (B) B-I, and (C) C-III structures.

Volume 10 Issue 5 (2024) 265 doi: 10.36922/ijb.3453