Symmetry recovery in zygomaticomaxillary complex fractures compared to normal unfractured population: A new reliable 3D evaluation.
J Stomatol Oral Maxillofac Surg
; 125(3S): 101857, 2024 Jun.
Article
in En
| MEDLINE
| ID: mdl-38556166
ABSTRACT
OBJECTIVE:
This study aims to quantify the facial symmetry of surgically treated zygomaticomaxillary complex (ZMC) fractures through a new reliable three-dimensional evaluation method, which is crucial for improving post-operative aesthetic and functional outcomes. MATERIAL ANDMETHODS:
Healthy patients and patients with surgically treated ZMC fractures were retrospectively reviewed. Using Brainlab Elements® the zygomatic bone and the orbit of each patient was segmented and mirrored. Subsequently, the mirrored side was matched with the other side via volume-based registration, using the segmented orbit as reference. Volumetric asymmetry was measured using 3-matic software, and a surface-based matching technique was used to calculate the mean absolute differences (MAD) between the surfaces of the two sides of the ZMC. The reliability of this novel method using volume-based registration was tested, and the intra-class correlation coefficient was assessed.RESULTS:
The MAD between the surfaces of the left and right sides in the control group was 0.51 mm (±0.09). As for the ZMC fracture group, MAD was 0.78 mm (±0.20) and 0.72 mm (±0.15) pre- and post-operatively, respectively. The MAD showed statistically significant differences between pre- and post-operative groups (p = 0.005) and between control and post-operative groups (p < 0.001). The intra-class correlation coefficient was high (≥0.99).CONCLUSIONS:
This evaluation method using mirroring and volume-based registration to determine the symmetrical position of the ZMC is reliable. The surface-based measurements revealed an improved symmetry after surgery. However, the symmetry of the treated patients remained lower than the control group.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Zygomatic Fractures
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Imaging, Three-Dimensional
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Maxillary Fractures
Limits:
Adult
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Female
/
Humans
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Male
/
Middle aged
Language:
En
Journal:
J Stomatol Oral Maxillofac Surg
Year:
2024
Document type:
Article
Affiliation country: