Comparison of infrazygomatic crest bone screw position using a postero-anterior cephalogram versus cone-beam computed tomography: a cross sectional study
, , , , e | 28 ago 2023
INFORMAZIONI SU QUESTO ARTICOLO
Pubblicato online: 28 ago 2023
Pagine: 64 - 70
Ricevuto: 01 feb 2023
Accettato: 01 giu 2023
DOI: https://doi.org/10.2478/aoj-2023-0023
© 2023 Sauni Ashfaq et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.
Figure 1.
Figure 2.
Comparison of IZC bone screw angulation with respect to dental landmarks on the PA cephalogram and the CBCT scan.
| Landmarks | N | Mean | SD | T | |
|---|---|---|---|---|---|
| LONG AXIS OF MAXILLARY 1ST MOLAR | |||||
| RIGHT | |||||
| PA-CEPH | 19 | 42.1 | 10.28 | 0.65 | 0.2 |
| CBCT | 19 | 44.1 | 10.21 | ||
| LEFT | |||||
| PA-CEPH | 19 | 43.3 | 10.54 | 0.7 | 0.2 |
| CBCT | 19 | 41.7 | 11.99 | ||
| FACIAL PLANE OF MAXILLARY 1ST MOLAR | |||||
| RIGHT | |||||
| PA-CEPH | 19 | 39.0 | 12.83 | 2.1 | 0.02* |
| CBCT | 19 | 44.5 | 7.39 | ||
| LEFT | |||||
| PA-CEPH | 19 | 40.1 | 11.56 | 2.1 | 0.02* |
| CBCT | 19 | 44.9 | 9.28 | ||
Points.
| Points | Location |
|---|---|
| Crista galli (Cg) | Most superior point at intersection with sphenoid. |
| Jugale left (Jl) | At jugal process, intersection of outline of maxillary tuberosity and zygomatic buttress on left side. |
| Jugale right (Jr) | At jugal process, intersection of outline of maxillary tuberosity and zygomatic buttress on right side |
| Upper 6 left (U6l) | Most buccal point at upper first molar crown on left side. |
| Upper 6 right (U6r) | Most buccal point at upper first molar crown on right side |
| Menton (Me) | Most inferior point of symphysis of mandible. |
| Zygomatic point (Zl) | The point on the postero-inferior border of zygomatic arch on left side |
| Zygomatic point (Zr) | The point on the postero-inferior border of zygomatic arch on right side |
Comparison of IZC bone screw angulation with respect to skeletal landmarks on PA cephalogram and the CBCT scan.
| Landmarks | Mean | SD | |||
|---|---|---|---|---|---|
| INTER-JUGALE PLANE | |||||
| RIGHT | |||||
| PA-CEPH | 19 | 45.9 | 8.70 | 0.1 | 0.4 |
| CBCT | 19 | 46.3 | 8.79 | ||
| LEFT | |||||
| PA-CEPH | 19 | 45.0 | 8.76 | 0.3 | 0.3 |
| CBCT | 19 | 44.6 | 10.36 | ||
| MID-SAGITTAL PLANE | |||||
| RIGHT | |||||
| PA-CEPH | 19 | 48.3 | 8.18 | 0.15 | 0.4 |
| CBCT | 19 | 48.4 | 7.88 | ||
| LEFT | |||||
| PA-CEPH | 19 | 50.6 | 11.29 | 1.2 | 0.1 |
| CBCT | 19 | 50.9 | 11.27 | ||
| ZYGOMATIC ARCH | |||||
| RIGHT | |||||
| PA-CEPH | 19 | 88.7 | 9.32 | 0.2 | 0.4 |
| CBCT | 19 | 88.5 | 9.85 | ||
| LEFT | |||||
| PA-CEPH | 19 | 84.7 | 12.27 | 0.8 | 0.2 |
| CBCT | 19 | 84.1 | 11.23 | ||
Planes.
| S.NO. | ||
|---|---|---|
| 1 | Inter-jugale plane | Two jugale points are marked on either side of the maxilla. A horizontal line is drawn joining the two jugale points. This is the inter-jugale plane |
| 2 | Mid-sagittal plane | A vertical line is drawn from the crista galli to the menton. This is the mid-sagittal plane |
| 3 | Zygomatic arch | A tangent is drawn along the zygomatic point |
| 5 | Long axis of the maxillary 1st molar | Two reference lines are drawn. First line is a horizontal line that represents the maxillary occlusal plane and the second line is a vertical line along the long axis of the maxillary 1st molar perpendicular to the occlusal plane |
| 6 | Facial plane of maxillary 1st molar | A vertical line tangent to the buccal surface of the distobuccal root of the molar is drawn. This is the facial plane |