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Table 3 Comparison of DC distance (mm) between the two groups in the pooled sample, in each jaw separately and by mini-implant type

From: Distance to alveolar crestal bone: a critical factor in the success of orthodontic mini-implants

   Jaw Type
Pooled Maxilla Mandible 1 2
Success Failure Success Failure Success Failure Success Failure Success Failure
N 229 31 188 21 41 10 133 14 96 17
Min 2.1 2.1 3.3 2.1 2.1 2.2 2.7 2.2 2.1 2.1
Max 10.9 5.0 10.9 5.0 10.2 4.4 10.9 4.7 10.4 5.0
Mean 7.46 3.43 7.7 3.37 6.26 3.58 7.81 3.20 6.96 3.63
SD 1.7 0.81 1.67 0.9 1.37 0.59 1.61 0.96 1.71 0.63
t 21.819 18.712 6.144 15.728 14.401
p < 0.001** < 0.001** < 0.001** < 0.001** < 0.001**
  1. Type 1, AbsoAnchor; type 2, Imtec
  2. *Significant, p < 0.05; **significant, p < 0.01