Table 4.
Comparison between compressive strength of macro porous TCP scaffolds obtained in the present work and earlier works (CS: Conventional sintering; MW: Microwave sintering).
| Fabrication Technique | Material | Architectural Features | Sintering | Compressive Strength (MPa) | |
|---|---|---|---|---|---|
| SFF Techniques | 3DP (Current study) | β-TCP | Porosity:~42% Pore size: 500 μm |
MW 1250 °C, 1 h |
10.95 ± 1.28 |
| Porosity:~54% Pore size: 500 μm |
CS 1250 °C, 2 h |
6.62 ± 0.67 | |||
| 3DP (Khalyfa et al., 2007) | 30 wt.% TTCP (tetracalcium phosphate) and 70 wt.% β-TCP | Porosity: ~38% Pore size: 2 mm |
CS 1400 °C, 6 h |
4.3 ± 0.3 | |
| FDM (Kalita and Ferguson, 2006) | β-TCP scaffolds with 1 wt.% MgO | Porosity: ~ 30% Pore size: ~300 μm |
CS 1250 °C, 6 h |
3.8 | |
| Conventional techniques | Combination of gel casting and polymer sponge technique (Ramay and Zhang, 2004) | HA/β-TCP biphasic calcium phosphate (BCP) | Porosity: ~73 % Pore size: ~300 – 400 μm |
CS 1144 °C, 1 h |
9.8 ± 0.3 |
| Slurry casting in pre-formed paraffin molds (Liu et al., 2010) | β-TCP | Porosity: ~80 % Pore size: ~350–500 μm Strut thickness: 140 μm |
CS 1100 °C ~ 1300 °C |
5.1 ± 1.9 | |
| Porosity: ~79 % Pore size: ~600–800 μm Strut thickness: 220 μm |
9.3 ± 2.8 | ||||
| Impregnation of β-TCP powder slurry into polymeric frames (Lin et al., 2011) | β-TCP | Porosity: ~ 65 % Pore size: ~400–550 μm |
CS 1100 °C |
10.87 ± 1.36 | |
| CS 1150 °C |
7.23 ± 0.96 | ||||