Table 3.
Pretreatment and Posttreatment Cephalometric Measurements of Protrusion and Retrusion Groups for Maxillary and Mandibular Dental Arches
| Group |
Pretreatment |
Posttreatment |
Pre- and Posttreatment Differences |
||||||
| Mean ± SD |
Min |
Max |
Mean ± SD |
Min |
Max |
Mean ± SD |
Min |
Max |
|
| Maxillary dental arch | |||||||||
| ANB, ° | |||||||||
| Protrusion | 2.63 ± 2.20 | −2.0 | 5.0 | 2.27 ± 2.11 | −2.0 | 5.0 | −0.36 ± 0.71 | −2.0 | 1.0 |
| Retrusion | 3.90 ± 1.39 | −1.0 | 5.0 | 3.90 ± 1.32 | −1.0 | 5.0 | 0.06 ± 0.52 | −1.0 | 1.0 |
| Total | 3.27 ± 1.93 | −2.0 | 5.0 | 3.08 ± 1.93 | −2.0 | 5.0 | −0.15 ± 0.65 | −2.0 | 1.0 |
| SN/GoGn, ° | |||||||||
| Protrusion | 32.97 ± 4.06 | 26.0 | 38.0 | 32.93 ± 4.03 | 26.0 | 39.0 | −0.03 ± 1.80 | −5.0 | 3.0 |
| Retrusion | 34.30 ± 3.36 | 27.0 | 39.0 | 34.97 ± 2.95 | 28.0 | 38.0 | 0.83 ± 1.98 | −3.0 | 6.0 |
| Total | 33.63 ± 3.76 | 26.0 | 39.0 | 33.95 ± 3.65 | 26.0 | 39.0 | 0.40 ± 1.93 | −5.0 | 6.0 |
| 1-NA, mm | |||||||||
| Protrusion | 1.81 ± 2.63 | −3.7 | 6.6 | 4.24 ± 2.56 | −1.1 | 8.8 | 2.43 ± 1.14 | 1.0 | 5.0 |
| Retrusion | 4.12 ± 1.67 | 0.7 | 7.7 | 0.63 ± 2.24 | −5.1 | 4.8 | −3.49 ± 2.04 | −9.9 | −1.3 |
| Total | 2.96 ± 2.47 | −3.7 | 7.7 | 2.43 ± 3.00 | −5.1 | 8.8 | −0.52 ± 3.40 | −9.9 | 5.0 |
| 1-NA, ° | |||||||||
| Protrusion | 15.50 ± 7.64 | −2.0 | 31.0 | 23.57 ± 7.19 | 8.0 | 37.0 | 8.06 ± 3.25 | 2.0 | 15.0 |
| Retrusion | 22.43 ± 5.47 | 9.0 | 34.0 | 14.50 ± 6.92 | 1.0 | 26.0 | −7.93 ± 5.77 | −21.0 | −2.0 |
| Total | 18.96 ± 7.46 | −2.0 | 34.0 | 19.03 ± 8.36 | 1.0 | 37.0 | 0.65 ± 9.30 | −21.0 | 15.0 |
| 1-SN, ° | |||||||||
| Protrusion | 95.47 ± 7.11 | 75.0 | 108.0 | 102.70 ± 6.57 | 88.0 | 112.0 | 7.23 ± 3.21 | 2 | 13 |
| Retrusion | 102.33 ± 6.72 | 85.0 | 113.0 | 94.00 ± 8.14 | 76.0 | 108.0 | −8.33 ± 5.77 | −23 | −2 |
| Total | 98.90 ± 7.68 | 75.0 | 113.0 | 98.35 ± 8.54 | 76.0 | 112.0 | 0.40 ± 1.93 | −5.0 | 6.0 |
| Mandibular dental arch | |||||||||
| ANB, ° | |||||||||
| Protrusion | 3.61 ± 1.47 | −1.0 | 5.0 | 3.48 ± 1.67 | −1.0 | 6.0 | −0.12 ± 0.69 | −2.0 | 1.0 |
| Retrusion | 3.33 ± 1.92 | −2.0 | 5.0 | 3.23 ± 1.97 | −2.0 | 5.0 | −0.10 ± 0.60 | −2.0 | 1.0 |
| Total | 3.48 ± 1.72 | −2.0 | 5.0 | 3.37 ± 1.81 | −2.0 | 6.0 | −0.11 ± 0.65 | −2.0 | 1.0 |
| SN/GoGn, ° | |||||||||
| Protrusion | 34.06 ± 3.54 | 27.0 | 38.0 | 33.97 ± 3.71 | 26.0 | 39.0 | −0.09 ± 1.60 | −5.0 | 3.0 |
| Retrusion | 33.40 ± 3.69 | 25.0 | 39.0 | 34.37 ± 3.59 | 24.0 | 38.0 | 0.96 ± 2.12 | −3.0 | 6.0 |
| Total | 33.75 ± 3.60 | 25.0 | 39.0 | 34.16 ± 3.63 | 24.0 | 39.0 | 0.41 ± 1.93 | −5.0 | 6.0 |
| 1-NB, mm | |||||||||
| Protrusion | 4.22 ± 2.16 | −2.0 | 7.3 | 6.30 ± 2.10 | 2.1 | 9.0 | 2.07 ± 1.06 | 0.5 | 5.8 |
| Retrusion | 5.62 ± 2.01 | 2.0 | 10.5 | 3.81 ± 1.85 | 1.1 | 9.2 | −1.80 ± 0.88 | −3.8 | −0.2 |
| Total | 4.88 ± 2.19 | −2.0 | 10.5 | 5.11 ± 2.33 | 1.1 | 9.2 | 0.22 ± 2.18 | −3.8 | 5.8 |
| 1-NB, ° | |||||||||
| Protrusion | 24.79 ± 6.58 | 12.0 | 36.0 | 30.24 ± 6.34 | 17.0 | 40.0 | 5.45 ± 3.63 | 2.0 | 17.0 |
| Retrusion | 29.87 ± 6.29 | 21.0 | 49.0 | 23.43 ± 5.21 | 17.0 | 40.0 | −6.43 ± 4.19 | −16.0 | −2.0 |
| Total | 27.21 ± 6.88 | 12.0 | 49.0 | 27.00 ± 6.72 | 17.0 | 40.0 | −0.20 ± 7.13 | −16.0 | 17.0 |
| IMPA, ° | |||||||||
| Protrusion | 91.60 ± 7.60 | 75.0 | 106.0 | 97.09 ± 7.21 | 83.0 | 112.0 | 5.48 ± 4.39 | 1.0 | 21.0 |
| Retrusion | 95.03 ± 7.25 | 83.0 | 118.0 | 89.90 ± 7.34 | 74.0 | 110.0 | −6.40 ± 4.07 | −14.0 | −1.0 |
| Total | 93.55 ± 7.64 | 75.0 | 118.0 | 93.38 ± 8.18 | 74.0 | 112.0 | −0.17 ± 7.31 | −14.0 | 21.0 |