A Comparison of Lower Dental Arch Changes Using Two Types of Space Regainers: A Removable Appliance with a Distalizing Screw and a Fixed Double-Banded Appliance
Table 2
Comparison of the pre- and posttreatment mean values in each group.
Variable
Distalizing screw (n = 19)
DBSR (n = 19)
Homogeneity
Pretreatment
Posttreatment
value
Pretreatment
Posttreatment
value
Mean ± SD
Mean ± SD
Mean ± SD
Mean ± SD
Required space (mm)
24.53 ± 1.87
23.32 ± 1.65
0.43
Available space (mm)
21.40 ± 2.64
24.93 ± 2.75
<0.001
20.17 ± 2.31
23.69 ± 2.32
<0.001
0.52
Molar angle (degree)
88.07 ± 8.83
90.30 ± 8.91
<0.001
91.68 ± 9.31
94.80 ± 9.22
<0.001
0.43
IMPA (degree)
90.60 ± 6.87
93.93 ± 7.26
<0.001
88.00 ± 7.21
90.14 ± 7.27
<0.001
0.29
Molar to symphysis (mm)
20.00 ± 4.95
22.70 ± 4.58
<0.001
22.36 ± 2.73
24.76 ± 2.71
<0.001
0.33
Molar to MP (mm)
28.07 ± 3.97
30.07 ± 4.39
<0.001
27.71 ± 3.67
30.06 ± 3.68
<0.001
0.26
DBSR: double-banded space regainer; SD: standard deviation; IMPA: incisor mandibular plane angle; MP: mandibular plane; .
