表 1. Comparison of the trueness of different impression methods.
不同取模方法的真实度比较
| Group | Implant positions | CI (n = 7) | IOS (n = 7) | PIC (n = 7) | ICam4D (n = 7) | η2 | P |
| CI: conventional impression; IOS: intraoral scanning. The trueness is evaluated by measuring the three-dimensional deviation (μm) between the model and the reference model. The smaller the value, the better the trueness. * P < 0.05, vs. CI; △ P < 0.05, vs. IOS; # P < 0.05, vs. PIC. | |||||||
| A | Left premolar | 22.19 ± 5.78 | 32.54 ± 11.25 | 24.67 ± 10.60 | 10.67 ± 2.45*,△ | 0.49 | < 0.05 |
| Left lateral | 49.34 ± 24.62 | 24.87 ± 13.58 | 14.40 ± 6.08* | 31.99 ± 1.29﹟ | 0.41 | < 0.05 | |
| Right lateral | 31.30 ± 13.18 | 22.63 ± 13.89 | 19.59 ± 6.18 | 17.50 ± 2.36 | － | > 0.05 | |
| Right premolar | 31.09 ± 14.19 | 26.77 ± 10.54 | 45.47 ± 24.82 | 25.91 ± 2.26 | － | > 0.05 | |
| Global | 37.13 ± 8.17 | 28.47 ± 7.84 | 30.41 ± 8.78 | 23.06 ± 1.29* | 0.36 | < 0.05 | |
| B | Left premolar | 22.47 ± 12.81 | 31.66 ± 21.22 | 22.27 ± 3.99 | 21.24 ± 5.82 | － | > 0.05 |
| Left lateral | 25.07 ± 7.52 | 27.04 ± 9.01 | 20.74 ± 2.28 | 56.91 ± 8.16*, △, ﹟ | 0.82 | < 0.05 | |
| Right lateral | 23.79 ± 2.65 | 29.64 ± 8.50 | 20.44 ± 11.75 | 27.83 ± 4.89 | － | > 0.05 | |
| Right premolar | 23.16 ± 4.25 | 32.74 ± 14.51 | 36.56 ± 11.38 | 25.60 ± 2.29 | － | > 0.05 | |
| Global | 24.47 ± 4.30 | 32.70 ± 7.45 | 26.73 ± 5.50 | 36.11 ± 1.57*, ﹟ | 0.49 | < 0.05 | |
| C | Left premolar | 31.89 ± 21.27 | 61.83 ± 34.98 | 18.61 ± 10.33 | 19.33 ± 1.66 | － | > 0.05 |
| Left lateral | 14.70 ± 2.55 | 30.96 ± 10.82* | 22.90 ± 9.71 | 83.61 ± 1.76*, △, ﹟ | 0.94 | < 0.05 | |
| Right lateral | 38.67 ± 26.48 | 35.53 ± 16.32 | 62.63 ± 9.40△ | 13.83 ± 1.52﹟ | 0.57 | < 0.05 | |
| Right premolar | 49.29 ± 33.83 | 45.59 ± 31.87 | 20.43 ± 5.03 | 6.66 ± 0.66﹟ | 0.40 | < 0.05 | |
| Global | 41.34 ± 7.37 | 51.09 ± 7.46 | 36.70 ± 3.60△ | 43.60 ± 0.78﹟ | 0.51 | < 0.05 | |
| D | Left premolar | 38.10 ± 19.25 | 42.41 ± 37.33 | 46.44 ± 9.44 | 41.66 ± 1.97 | － | > 0.05 |
| Left lateral | 22.47 ± 11.50 | 30.49 ± 9.15 | 14.53 ± 3.82△ | 16.74 ± 0.77△ | 0.43 | < 0.05 | |
| Right lateral | 30.69 ± 13.32 | 44.44 ± 16.43 | 32.06 ± 9.11 | 10.01 ± 1.58*, △, ﹟ | 0.57 | < 0.05 | |
| Right premolar | 21.97 ± 15.18 | 40.74 ± 23.47 | 12.07 ± 3.49△ | 36.41 ± 1.28﹟ | 0.43 | < 0.05 | |
| Global | 30.59 ± 11.39 | 48.56 ± 10.74 | 30.31 ± 3.26△ | 29.39 ± 0.90△ | 0.54 | < 0.05 | |
| E | Left premolar | 18.93 ± 11.78 | 68.17 ± 48.61* | 42.69 ± 14.02* | 52.36 ± 2.31* | 0.36 | < 0.05 |
| Left lateral | 19.41 ± 15.17 | 22.23 ± 13.10 | 17.57 ± 4.90 | 34.23 ± 1.87﹟ | 0.31 | < 0.05 | |
| Right lateral | 10.59 ± 4.46 | 29.20 ± 19.13 | 34.47 ± 20.07 | 50.13 ± 1.70* | 0.54 | < 0.05 | |
| Right premolar | 27.37 ± 17.61 | 36.14 ± 22.53 | 20.53 ± 5.61 | 26.50 ± 3.21 | － | > 0.05 | |
| Global | 22.96 ± 5.30 | 48.84 ± 15.09* | 32.17 ± 6.06 | 42.26 ± 0.71* | 0.61 | < 0.05 | |
| F | Left premolar | 45.93 ± 31.50 | 56.04 ± 39.84 | 23.03 ± 5.34*, △ | 47.66 ± 2.05﹟ | 0.20 | < 0.05 |
| Left lateral | 29.30 ± 34.24 | 32.43 ± 13.71 | 31.00 ± 8.13 | 33.37 ± 1.35 | － | > 0.05 | |
| Right lateral | 19.81 ± 6.86 | 30.71 ± 8.70 | 14.14 ± 2.70*, △ | 39.40 ± 2.04*, ﹟ | 0.78 | < 0.05 | |
| Right premolar | 19.54 ± 8.86 | 76.90 ± 43.32* | 40.27 ± 6.41* | 52.94 ± 2.36* | 0.48 | < 0.05 | |
| Global | 35.67 ± 13.56 | 57.10 ± 19.66 | 29.10 ± 3.75△ | 44.03 ± 1.26﹟ | 0.43 | < 0.05 | |