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 3

Comparison of cast and cephalometric changes (T₂ − T₁) between two groups.

Variable	Distalizing screw (n = 19)	DBSR (n = 19)	95% CI		value
	T2 − T1 mean ± SD	T2 − T1 mean ± SD	Lower	Upper
Available space (mm)	3.53 ± 1.16	3.51 ± 0.82	−0.75	0.87	0.974
Molar angle (degree)	2.23 ± 1.40	3.12 ± 1.19	−1.88	0.11	0.078
IMPA (degree)	3.33 ± 1.71	2.14 ± 1.05	0.10	2.28	0.033
Molar to symphysis (mm)	2.70 ± 1.45	2.41 ± 0.71	−0.58	1.17	0.5
Molar to MP (mm)	2.00 ± 0.73	2.35 ± 1.09	−1.05	0.35	0.317

DBSR: double-banded space regainer; CI: confidence interval; SD: standard deviation; IMPA: incisor mandibular plane angle; MP: mandibular plane; T₁: pretreatment; T₂: posttreatment; .