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Table 1 Volumes and surface areas of real and 3D-printed canals pre- and post-preparation (n = 12)

From: Shaping ability of protaper next compared with waveone in late-model three-dimensional printed teeth

Group

Volume before preparation (mm3)

Volume after preparation (mm3)

Surface area before preparation (mm2)

Surface area after preparation (mm2)

Mean ± SD

Mean ± SD

Mean ± SD

Mean ± SD

Real teeth

2.82 ± .74

2.94 ± .75

19.61 ± 3.65

20.51 ± 3.58

3D-printed teeth

2.78 ± .73

2.97 ± .77

19.57 ± 3.60

20.59 ± 3.24

P value

.289b

.064a

.387b

.494a

  1. aPaired-samples T test (P < .05)
  2. bWilcoxon signed-rank test (P < .05)