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Table 2 Mean difference and 95 % CI in the measurements of the treated patients at time points T1, T2, and T3

From: Anchorage onto deciduous teeth: effectiveness of early rapid maxillary expansion in increasing dental arch dimension and improving anterior crowding

  Differences between measurements at time-points T1, T2, and T3
  T2–T1 T3–T1 T3–T2
n = 20 n = 20 n = 20
Inter-canine width    
 mean, mm 6.4* 4.2* −2.2*
 95 % CI 5.7 to 7.2 3.3 to 5.1 −3.1 to −1.3
Inter-canine arch    
 mean, mm 10.3* 6.2* −4.1*
 95 % CI 8.6 to 12.1 4.4 to 8.0 −5.8 to −2.4
Inter-molar width    
 mean, mm 4.8* 4.7* −0.1
 95 % CI 4.2 to 5.4 3.8 to 5.7 −0.9 to 0.7
Inter-molar depth    
 mean, mm 1.1* 0.8* −0.4
 95 % CI 0.6 to 1.7 0.2 to 1.3 −0.8 to −0.04
  1. *Significant difference