Page 142 - Open versus closed Mandibular condyle fractures

Chapter 4.3 Open versus Closed
The condylar volume in patients with intracapsular fractures tended to be smaller than in those with extracapsular fractures, but the difference was not statistically significant (pre-treatment P = 0.842, post-treatment fractured P = 0.090, post-treatment non- fractured P = 0.707). In view of the small number of patients, the intracapsular and extracapsular fractures were considered as one group for all other analyses.
Table 1. Tests of normality
Pre-treatment NF 0.135 Post-treatment NF 0.078 Post-treatment F 0.080
Kolmogorov-Smirnova
Shapiro-Wilk test
Statistic
df
Sig.
0.200* 0.200* 0.200*
Statistic df
0.963 0.975 0.968
Sig.
0.557 0.380 0.196
Table 2. Intracapsular and extracapsular condylar volumes
Pre-T Post-T
F NF F
22 49 49
22 49 49
*Lower bound of the true significance. a. Lilliefors Significance Correction. F, fractured side; NF, non-fractured side
152
Volume (mm3) -
SD (mm3) - -
Paired t-test - - (pre-post)
Independent t-test - - (intra-extra)
Open (mm3) - -
SD (mm3) - - Closed (mm3) - -
SD (mm3) - - Independent t-test - -
339.13 733.97 390.96 558.17 P=0.014 P=0.000
P=0.842 P=0.090
- - (n=1) (n=7) 1939.00 1982.14
- - - 520.58
- - (n=8) (n=33) 1387.13 1747.85
Intra Extra
NF
Intra Extra
(n=9) (n=40) 1788.89 1874.28
361.41 652.03 P=0.707
(n=1) (n=7) 2224.00 1831.43
- 787.57
(n=8) (n=33) 1734.5 1883.36
- - 368.79 564.79
- - P=0.201 P=0.319 P=0.223 P=0.851
Intra Extra Intra Extra
(n=5) (n=17) (n=9) (n=40) - 1980.80 1911.47 1448.44 1788.85
F , fractured side; NF, non-fractured side; Pre-T, pre-treatment; Post-T, post-treatment; SD, standard deviation
Analysis of CBCT scans
Pre- treatment and post-treatment scans
On the pre-treatment scans, the mean condylar volume on the non-fractured side was 1927 ± 658 mm3 (n=22) (Table 3). It was not possible to calculate the condylar volume on the fractured side because of the presence of multiple fragments.
344.74 633.52