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Table 3 Release of titanium in rectangular and round NiTi wires at different time points

From: Release of metal ions from round and rectangular NiTi wires

Time Rectangular wire Round wire P value
Mean ± SD Mean ± SD
1 h 243.3 ± 2.8 211.9 ± 2.3 0.001
24 h 288.4 ± 5 253.7 ± 3.9 0.001
1 week 318.8 ± 1.6 290 ± 1.6 0.001
3 weeks 385.6 ± 4.4 329.5 ± 6.3 0.001
P value 0.001 0.001 0.001