Table 5 Proportions of 54 infrazygomatic crest mini-implants with sufficient angle to reach > 1 mm from the root during (-0.4, y) implantation
From: Clinical analysis of successful insertion of orthodontic mini-implants in infrazygomatic crest
Height | y = 8.2 | y = 9.2 | y = 10.2 | ||||||
|---|---|---|---|---|---|---|---|---|---|
Angle | α ≤ 56.4° | 56.4° < α ≤ 61.4° | 61.4° < α ≤ 66.4° | α ≤ 56.4° | 56.4° < α ≤ 61.4° | 61.4° < α ≤ 66.4° | α ≤ 56.4° | 56.4° < α ≤ 61.4° | 61.4° < α ≤ 66.4° |
Number of cases | 41 | 1 | 2 | 4 | 0 | 0 | 4 | 1 | 0 |
Proporti-on | 75.9% | 1.9% | 3.7% | 7.4% | 0% | 0% | 7.4% | 1.9% | 0% |
Cumulat-ive proporti-on | 75.9% | 77.8% | 81.5% | 83.3% | 83.3% | 83.3% | 90.7% | 92.6% | 92.6% |