Table 3.
Mean, standard deviation, percentage and confidence interval of volumetric distortion according to material, MAR activation. and windowing adjustment obtained for the two CBCT units
| CBCT unit | Mean (SD), mm³ | Percentage, % | 95% CI | ||
| Picasso Trio | Material | Am | 17.82 (6.7) | 14.58 | (15.87–19.87) |
| CoCr | 11.17 (5.79) | 8.64 | (9.49–12.86) | ||
| Gu | −0.04 (13.57) | 0.03 | (-3.98–3.89) | ||
| Ti | 1.12 (12.99) | 0.86 | (-2.64–4.9) | ||
| Zi | 13.31 (7.68) | 10.78 | (11.08–15.55) | ||
| MAR | Off | 13.53 (9.66) | 10.58 | (11.57–15.49) | |
| On | 1.50 (11.16) | 1.17 | (-1.03–4.04) | ||
| Windowing | W1 | 3.96 (10.27) | 3.10 | (2.10–5.81) | |
| W2 | 13.4 (11.91) | 10.48 | (11.24–15.55) | ||
| OP300 | Material | Am | 52.32 (10.5) | 42.80 | (49.27–55.37) |
| CoCr | 47.47 (11.58) | 36.72 | (44.1–50.83) | ||
| Gu | 33.56 (7.82) | 25.17 | (31.29–35.83) | ||
| Ti | 37.93 (10.82) | 28.99 | (34.79–41.07) | ||
| Zi | 49.62 (10.47) | 40.19 | (46.58–52.66) | ||
| MAR | Off | 37.33 (7.58) | 29.20 | (35.79–38.87) | |
| On | 48.31 (14.23) | 37.79 | (45.42–51.19) | ||
| Windowing | W1 | 38.81 (11.24) | 30.36 | (36.78–40.85) | |
| W2 | 49.54 (11.4) | 38.75 | (47.48–51.61) |
Am, amalgam alloy; CBCT, cone-beam computed tomography; CI, confidence interval; CoCr, cobalt-chromium; Gu, gutta-percha; MAR, metal artefact reduction; SD, standard deviation; Ti, titanium; W1, large window width and upper window level; W2, narrow window width and low window level; Zi, zirconium.
Bold numbers indicate the lowest descriptive values of volumetric distortion considering each condition.