Table 3 Views on the clinical usefulness of iTero and Trios after training (4-point Likert scale)

Light weight head

1.65 (0.78)

2.65 (0.86)

.000*

1.89 (0.60)

2.30 (0.58)

.014*

Small-sized head

2.12 (0.69)

2.42 (0.87)

.096

2.00 (0.70)

2.18 (0.63)

.332

Easy to operate software

2.89 (0.85)

2.95 (0.82)

.750

2.24 (0.75)

3.00 (0.50)

.008*

Easy to operate hardware

2.47 (0.71)

2.82 (0.63)

.188

2.29 (0.46)

2.70 (0.46)

.004*

Good grip

2.05 (0.65)

2.76 (0.66)

.009*

2.35 (0.78)

2.23 (0.66)

.651

Quick training

2.23 (0.56)

2.70 (0.77)

.056

2.41 (0.50)

2.58 (0.50)

.269

Comfortable handling

2.52 (0.87)

3.17 (0.52)

.007*

2.58 (0.71)

2.70 (0.77)

.579