From: Comparison of temporomandibular joint changes in Twin Block and Bionator appliance therapy: a magnetic resonance imaging study
Group
Number
Age (years)
Mean
SD
Control
?Total
10
12
1.8
?Male
3
11.9
1.9
?Female
7
12.1
1.7
Twin Block
12.5
1.5
6
12.6
1.6
4
12.4
Bionator
11.5
11.8
11.3
1.4