1 research outputs found
Correlation of radiomorphometric indices of the mandible and mandibular angle fractures
This study assessed the correlation of radiomorphometric indices of the mandible and mandibular angle fractures
(MAFs) in an Iranian population. This retrospective study was conducted on 3D computed tomography (CT) scans
of 118 patients between 18 to 60 years. The images were divided into two groups with MAFs and other types of
mandibular fractures (non-MAF). The gonial angle, ramus height, condylar neck width, minimum ramus width,
and mandibular length were all measured using MARCO PACS software. Age, gender, and presence and eruption
status of third molar at the fracture side were all recorded. The correlation between these parameters and MAF
was analyzed using R software (alpha ¼ 0.05). Of all patients, 41 samples had MAF. The two groups were not
significantly different regarding the mean age and gender (P > 0.05). The mean size of gonial angle and ramus
height in the MAF group were significantly larger, and smaller than the corresponding values in the non-MAF
group, respectively (P < 0.001). The median minimum ramus width in the MAF group was significantly
smaller than that in the non-MAF group (P ¼ 0.001). Patients with a large gonial angle had 6.6 times higher odds
of MAF compared with other fracture types (P ¼ 0.046). Condylar neck width, mandibular length, and erupted
third molars had no significant correlation with type of fracture. Presence of impacted third molar increased the
odds of MAF by 5.55 times.
Patients with a large gonial angle, short ramus height, minimum ramus width, and impacted third molar are
more susceptible to MAF. Surgeons can use these indices to predict the risk of MAF in trauma patients with such
facial characteristics, and make a diagnosis by radiographic modalities