Table 3.
Comparison of median trueness values by all data capture principle (unit: μm).
| Variable | N | Ref-IOS Data | Ref-IOS/DLP Data | Ref-IOS/FDM Data | Ref-IOS/SLA Data | IOS-DLP Data | IOS-FDM Data | IOS-SLA Data |
|---|---|---|---|---|---|---|---|---|
| Median (Q1–Q3) | ||||||||
| CS3600 | 10 | 30.2 (27.1–34.9) a | 59.5 (57.9–66.1) a | 64.3 (63.8–68.1) b | 57.1 (46.7–64.8) ab | 51.8 (49.8–55.8) a | 73.3 (71.8–75.1) b | 61.5 (58.1–68.3) a |
| i500 | 10 | 23.5 (20.8–25.9) b | 43.2 (38.5–46.1) b | 81.9 (79.9–85.2) a | 65.5 (62.8–68.9) a | 46.2 (44.4–48.4) b | 77.6 (74.9–79.9) a | 60.2(56.6–63.1) a |
| Trios3 | 10 | 26.9 (24.5–28.6) ab | 44.8 (39.2–48.2) b | 78.8 (74.5–81.5) a | 56.6 (47.9–60.5) b | 50.8 (47.1–54.7) ab | 78.8 (75.1–81.1) a | 61.2(56.9–66.3) a |
| Total | 30 | 26.6 (24.5–28.9) | 47.1 (41.6–58.2) | 76.3 (66.5–81.5) | 59.8 (53.5–65.5) | 49.5 (46.4–53.5) | 75.9 (73.3–79.1) | 61.2 (57.5–65.8) |
| df | - | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Chi-square | - | 15.4 | 19.6 | 19.1 | 8.7 | 10.5 | 11.5 | 0.7 |
| p value | - | <0.001 | <0.001 | <0.001 | 0.013 | 0.005 | 0.03 | 0.695 |
df, degrees of freedom. Statistically significant at p < 0.05. Bonferroni: a>b. Median values used for statistical analysis. Different lowercase letters within the same column indicate statistical difference between Ref-IOS, Ref-IOS/3DP and IOS-3DP overall digital data capture principles. The “a” indicates higher value of each data while the “b” indicates lower value of each data. There is a significant difference between “a” and “b” while there is no significant difference between the same lowercase letters. If there is an “ab”, there is no significant difference between the “ab” and the “a”, and between the “ab” and “b” as well (multiple comparison by Mann-Whitney U test) (p < 0.05).