Table 4.

Detailed Results From Primary and Subgroup Analyses^a

Analysisb	Ncomp	SMD	95% CI	P
Deep-bite correction
All studies (REM)	5	−0.48	−0.89 to −0.07
Subgroup analyses (MEA)
Location of miniscrews				.36
Maxillary lateral and canine	2	−0.24	−0.78 to 0.30
Maxillary central and lateral	3	−0.64	−1.3 to 0.01
Type of intrusion arch				.73
CIA	3	−0.58	−1.24 to 0.08
BIA	1	−0.45	−1.25 to 0.34
UA	1	−0.13	−1.03 to 0.77
Root resorption (REM)
Maxillary right central incisor	2	−0.53	−1.09 to 0.04
Maxillary left central incisor	2	−0.41	−1.13 to 0.32
Maxillary right lateral incisor	2	−0.42	−1.02 to 0.19
Maxillary left lateral incisor	2	−0.41	−1.04 to 0.23
True incisor intrusion
All studies (REM)	5	−0.95	−1.41 to −0.49
Subgroup analyses (MEA)
Location of miniscrews				.035*
Maxillary lateral and canine	2	−0.49	−1.03 to 0.06
Maxillary central and lateral	3	−1.26	−1.72 to −0.8
Type of intrusion arch				.9
CIA	4	−0.96	−1.55 to −0.37
BIA	1	−0.9	−1.73 to − 0.08
Vertical movement in maxillary molar
All studies (REM)	6	−0.86	−1.46 to −0.27
Subgroup analyses (MEA)
Location of miniscrews				.8
Maxillary lateral and canine	3	−0.8	−1.67 to 0.06
Maxillary central and lateral	3	−0.97	−2.02 to 0.08
Type of intrusion arch				.015*
CIA	4	−0.75	−1.36 to −0.15
BIA	1	−0.24	−1.02 to 0.55
UA	1	−2.3	−3.46 to −1.14

^aBIA indicates Burstone intrusion arch; CI, confidence interval; CIA, Connecticut intrusion arch; MEA, mixed-effects subgroup analyses; P, test for between-subgroup heterogeneity; REM, random-effects meta-analysis; SMD, standardized mean difference; UA, utility arch.

^bSubgroup analyses for specific malocclusion characteristics could not be performed as individual studies did not adequately report on these aspects.

^*Significant at P < .05.