The identification of possible reference planes on a CBCT scan taken with a small FOV—an observational analytical study
y | 13 dic 2023
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Publicado en línea: 13 dic 2023
Páginas: 174 - 184
Recibido: 01 feb 2023
Aceptado: 01 sept 2023
DOI: https://doi.org/10.2478/aoj-2023-0021
© 2023 A. Sumathi Felicita et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
Figure 1.
Figure 2.
Figure 3.
Shows the linear regression analysis done after the Bland Altman test depicted in fig 3 and the presence or absence of proportional bias for each of the parameters between CBCT and lateral cephalogram
| Unstandardized Coefficients | Standardized Coefficients | ||||||
|---|---|---|---|---|---|---|---|
| Parameters | B | Std. Error | Beta | Sig. | R2 | Standard error of estimate | |
| Change in axial inclination of the maxillary permanent first molar on the right side | –0.487 | 0.538 | –0.243 | –0.905 | 0.382 | 0.059 | 5.71 |
| Change in angulation of the maxillary central incisor on the right side | 0.258 | 0.313 | 0.223 | 0.824 | 0.425 | 0.050 | 5.11 |
| Change in axial inclination of the maxillary permanent first molar on the left side | –0.096 | 0.613 | –0.043 | –0.156 | 0.878 | 0.002 | 6.74 |
| Change in angulation of the maxillary central incisor on the left side | 0.143 | 0.247 | 0.159 | 0.580 | 0.572 | 0.025 | 4.06 |
Shows the demographics of the patients included in the study
| Male | Female | Total | |
|---|---|---|---|
| N | 6 | 9 | 15 |
| Mean age (SD) in years | 22.17 | 17.89 | 19.6 |
| (5.27) | (2.76) | (4.36) |
Showing the comparison treatment change achieved and level of significance when measured with lateral cephalogram and CBCT
| Right side | Left side | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| N | Treatment change (T1-T2) | CBCT Mean (SD) | Lateral Cephalogram Mean (SD) | Difference Mean (SE) | 95% Cl | Sig. (2- tailed) | CBCT Mean (SD) | Lateral Cephalogram Mean (SD) | Difference Mean (SE) | 95% Cl | Sig. (2- tailed) |
| 15 | Change in axial inclination of M1 (°) | –2.01 |
–3.20 |
1.19 |
–1.82 |
0.425 | –1.68 |
–3.20 |
1.52 |
–1.76 |
0.350 |
| Change in axial inclination of U1 (°) | 1.82 |
2.53 |
–.71 |
–4.48 |
0.701 | 1.72 |
2.53 |
–0.81 |
–4.41 |
0.650 | |
Showing the comparison of pre-treatment and post-treatment measurements between the CBCT image and cephalogram in the maxillary arch
| Pre-distalisation measurements | Post-distalisation measurements | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N | Side | Parameters | CBCT Mean (SD) | Lateral Cephalogram Mean (SD) | Difference Mean (SE) | 95% Cl | Sig. (2- tailed) | CBCT Mean (SD) | Lateral Cephalogram Mean (SD) | Difference Mean (SE) | 95% Cl | Sig. (2- tailed) |
| 15 | Right side | Axial inclination of U1 (°) | 118.04 |
120.80 |
–2.76 |
–7.13 |
0.206 | 1 16.22 |
1 18.27 |
–2.047 |
–6.93 |
0.398 |
| Axial inclination of M1 (°) | 80.32 |
90.60 |
–0.28 |
–14.33 |
0.000 |
82.33 |
93.80 |
–11.47 |
–15.94 |
0.000 |
||
| Left Side | Axial inclination of Ul (°) | 1 18.96 |
120.80 |
–1.84 |
–6.36 |
0.41 1 | 1 17.23 |
1 18.27 |
–1.03 |
–5.25 |
0.620 | |
| Axial inclination of M1 (°) | 78.65 |
90.60 |
–11.95 |
–15.96 |
0.000 |
80.33 |
93.80 |
–13.47 |
–18.41 |
0.000 |
||