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Table 3 Comparison of OHIP scores at T0 between Mini Hyrax wearers and Hyrax wearers

From: Mini Hyrax vs Hyrax expanders in the rapid palatal expansion in adolescents with posterior crossbite: a randomized controlled clinical trial

  Mini Hyrax T0 Hyrax T0 p valuea
Mean (SD) Mean (SD)  
FL 0.73 (1.22) 0.73 (1.10) 1.000
FD 2.47 (1.80) 1.80 (1.14) 0.240
PD 3.87 (2.41) 2.53 (2.16) 0.123
FD 0.73 (1.16) 0.47 (0.74) 0.461
PD 3.13 (2.29) 1.27 (1.38) 0.012
SD 1.60 (1.84) 0.60 (1.12) 0.086
HC 0.80 (1.14) 0.40 (0.73) 0.265
SCO 13.33 (8.04) 7.80 (6.80) 0.051
  1. T0: pretreatment
  2. aStudent t test (independent samples)
  3. SD standard deviation, FL functional limitation, FD physical discomfort, PD psychological discomfort, FD physical disability, PD psychological disability, SD social disability, HC handicaps, SCO total score