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Table 2 Showing total expansion in ZMA (millimeters)

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

  Pre-expansion Post-expansion Total expansion, RT+LT ZMA Treatment change p value
RT LT Diff RT LT Diff Pre Post
Mean 40.36 40.16 0.20 42.46 42.05 0.41 80.53 84.51 3.99 < .0001
SD - - 1.55 - - 2.33 4.91 5.34 1.60
  1. RT right, LT left