Читать книгу Orthodontic Treatment of Impacted Teeth - Adrian Becker - Страница 50

The cantilever configuration is shown in Figure 3.2a–d. The force system is acting on the canine and first molar, and moments and forces are generated in the horizontal and sagittal planes.

In cases of palatally displaced canines, the force system for the extrusion of the canine is different regarding the third‐order displacement of the molar, because the applied force is acting palatal to the CR.

For buccally engaged cantilever systems in 0.018 in. strap‐ups, a transpalatal arch (TPA) would be preferred for stabilization of the buccal segments.

All buccal cantilever systems should be used with a bypassing but rigid base arch.