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Table. 6.

The results of the pooled mean estimate for skeletal, alveolar molar width (AMW), and dental expansion from the meta-analysis including the adjusted values after the method of trim and fill

Group Parameter n N Mean SE 95% CI
Skeletal expansion ZMW 4 132 1.910 (2.385)** 0.548 0.835, 2.985 (1.120, 3.649)**
NW 9 202 2.675 0.179 2.325, 3.026
J-J 5 129 3.120 0.576 1.990, 4.250
PNS 5 91 3.715 (3.337)** 0.303 3.121, 4.310 (2.754, 3.919)**
ANS 5 91 4.335 (4.562)** 0.338 3.674, 4.997 (3.938, 5.187)**
Alveolar expansion AMW 4 71 4.221 (4.799)** 0.608 3.030, 5.412 (3.112, 6.486)**
Dental expansion ICW 3 50 3.959 0.926 2.144, 5.774
IPMW 5 131 5.218 (4.992)** 0.355 4.522, 5.914 (4.229, 5.755)**
IMW 9 173 5.985 0.318 5.361, 6.609

n, number of articles; N, number of subjects; SE, standard error; CI, confidence interval; ZMW, zygomatic width; NW, nasal width; J-J, jugular width; PNS, midpalatal suture at the posterior nasal spine; ANS, midpalatal suture at the anterior nasal spine; ICW, inter-canine width; IPMW, inter-premolar width; IMW, inter-molar width.

Values in parenthesis ** = adjusted values after the method of trim and fill.

Korean J Orthod 2022;52:182~200 https://doi.org/10.4041/kjod21.256
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