The 20 Principles of the Alexander Discipline, Volume 3. R.G. "Wick" Alexander
| Table 1-5 | Individualized forces |
| Force | Duration (months) |
|---|---|
| Chains on maxillary canines | 6 |
| Elastics | |
| Class II | 7 |
| Anterior box | 1 |
| Finishing (W with a tail) | 1 |
| Table 1-6 | Measurements |
| Initial (mm) | Final (mm) | |
|---|---|---|
| Maxillary intermolar width (6 × 6) | 32.2 | 33.4 |
| Mandibular intercanine width (3 × 3) | 26.0 | 28.4 |
Case 1-2
Figs 1-7a to 1-7c Pretreatment facial views.
Figs 1-7d to 1-7f Pretreatment intraoral views.
Figs 1-7g and 1-7h Pretreatment occlusal views.
Fig 1-7i Pretreatment cephalometric tracing.
Fig 1-7j Pretreatment panoramic radiograph.
Figs 1-7k to 1-7m Intraoral views 6 months into treatment: maxillary 0.016 SS archwire and mandibular 17 × 25 SS archwire.
Figs 1-7n and 1-7o Occlusal views 6 months into treatment.
Figs 1-7p to 1-7r Intraoral views 11 months into treatment: maxillary 17 × 25 TMA closing loop archwire and mandibular 0.016 SS archwire with chain.
Figs 1-7s and 1-7t Occlusal views 11 months into treatment.
Figs 1-7u to 1-7w Intraoral views 15 months into treatment: mandibular 16 × 22 SS archwire.
Figs 1-7x and 1-7y Occlusal views 15 months into treatment.
Figs 1-7z to 1-7bb Intraoral views 21 months into treatment: maxillary and mandibular 17 × 25 SS archwires.
Figs 1-7cc and 1-7dd Occlusal views 21 months into treatment.
Figs 1-7ee to 1-7gg Final facial views.
Figs 1-7hh to 1-7jj Final intraoral views.
Figs 1-7kk and 1-7ll Final occlusal views.
Fig 1-7mm Posttreatment cephalometric tracing.
Fig 1-7nn Posttreatment panoramic radiograph.
Figs 1-7oo to 1-7qq Facial views 7 years posttreatment.
Figs 1-7rr to 1-7tt Intraoral views 7 years posttreatment.
Figs 1-7uu and 1-7vv Occlusal views 7 years posttreatment.
Fig 1-7ww Composite cephalometric tracing 7 years posttreatment.
Case 1-3
Overview
A 17-year-old girl presented with a high-angle, bilateral posterior crossbite skeletal pattern (Figs 1-8a to 1-8h). She had a severe open bite (5 mm). Treated in 1974, this case took place in the early years of rapid palatal expansion use, especially on adult patients.
Examination and diagnosis
Posterior bilateral crossbites resulted from the V-shaped maxillary arch form. A skeletal Class III and high-angle pattern, open bite, and tongue thrust made this problem very difficult to correct. The minor arch length discrepancy and facial soft tissue profile must be considered in the diagnosis.
Treatment plan
Nonextraction treatment would commence with rapid palatal expansion and then full appliances. Speech therapy was recommended to improve the tongue posture. Final results are shown in