Geometric accuracy of an acrylonitrile butadiene styrene canine tibia model fabricated using fused deposition modelling and the effects of hydrogen peroxide gas plasma sterilisation

Table 2 Mean ± standard deviation values for comparisons of measurements obtained from 3D-CT, 3D-FDM, and 3D-GAS images of the tibial bone surfaces (n = 12) of six canine cadavers

Variable	E_FDM-CT (3D-FDM vs. 3D-CT)	E_GAS-FDM (3D-GAS vs. 3D-FDM)
Surface deviation
Root mean square (mm)	0.1214 ±0.0185 ^a	0.0431 ±0.0248
Average deviation positive (mm)	0.0973 ±0.0182 ^a	0.0234 ±0.0162
Average deviation negative (mm)	−0.0737 ±0.0170 ^a	− 0.0258 ±0.0196
Curvature difference of cross-sectional measurements of bone surface at:
(a) 5% length of the tibia (mm)	0.3025 ±0.2159 ^b	0.0491 ±0.0428
(b) 15% length of the tibia (mm)	0.0863 ±0.0227	0.0273 ±0.0180
(c) 25% length of the tibia (mm)	0.0645 ±0.0186	0.0247 ±0.0137
(d) 50% length of the tibia (mm)	0.1313 ±0.0449	0.0376 ±0.0404
(e) 75% length of the tibia (mm)	0.1307 ±0.0385	0.0263 ±0.0194
(f) 85% length of the tibia (mm)	0.1020 ±0.0353	0.0239 ±0.0160
(g) 95% length of the tibia (mm)	0.1288 ±0.0674	0.0351 ±0.0346

ISSN: 1746-6148