Page 143 - Open versus closed Mandibular condyle fractures

Regression analysis did not identify any significant effect of gender, age, type of trauma, type of fracture, or presence of other fractures on the pre-treatment condylar volume on the non-fractured side.
On the total of 49 post-treatment scans, the mean condylar volume was 1726 ± 544 mm3 on the fractured side and 1879 ± 607 mm3 on the non-fractured side. Regression analysis revealed that patient gender and MMO had a significant effect on the volume of the non-fractured condyle post-treatment (b = 0.409, P = 0.002 and b = 0.321, P = 0.013, respectively).
Women tended to have smaller condyles, and an association was seen between a larger post-treatment condylar volume on the non-fractured side and a wider MMO. Patient gender also had a significant effect on the post-treatment condylar volume on the fractured side (b = 0.413, P = 0.003), whereby women tended to have a smaller condylar volume post-treatment.
No significant difference in condylar volume was found between the open and closed treatment groups (non-fractured volume, open versus closed, P = 0.900; fractured volume, open versus closed, P = 0.182).
Pre- and post-treatment non-fractured matches/couples
When looking at the pre- and post-treatment non-fractured matches/couples (n=22), the mean condylar volume on the non-fractured side was 1927 ± 658 mm3 (n=22) pre-treatment and 1751 ± 630 mm3 (n=22) post-treatment (Table 3). The mean difference in condylar volume between the pre-treatment and post-treatment condylar volumes on the non-fractured side was 177 ±127 mm3, which represents a 9.2% decrease in volume.
Significantly smaller non-fractured condyles were found on the post-treatment scans in both the open and closed treatment groups (open: pre-treatment 1668 mm3 and post-treatment 1497 mm3; P = 0.039, closed: pre-treatment 1985 mm3 and post-treatment 1807 mm3; P < 0.001).
When the open and closed treatments were compared, no significant difference in the volume, i.e., pre-treatment and post-treatment volumes of the non-fractured condyles, was found (P = 0.922).
Cone beam computed tomography analysis
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