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Table 4 Asymmetric group mean for greater and lesser expansion (millimeters) at ANS, PNS, and ZMA

From: An assessment of the magnitude, parallelism, and asymmetry of micro-implant-assisted rapid maxillary expansion in non-growing patients

  Treatment change
Mean SD p value
Greater ANS 4.08 1.22 < .0001
Lesser ANS 1.86 0.97
ANS deviation 2.22 0.89  
Greater PNS 3.81 1.44 < .0001
Lesser PNS 2.04 1.55
PNS deviation 1.77 1.11  
Greater ▲ZMA 2.83 1.23 < .05
Lesser ▲ZMA 1.53 0.85
ZMA deviation 1.3 1.18