Fig. 15 Fig. 16 deep tunnel 4) Can use the same bends as a straight wire bracket. The takeaway: Modules relax, NiTi wires never relax, keeping constant light coupling force on the teeth. “In Class III patients, I often leave the upper first bicuspid brackets off because I normally have to place NiTi open coiled springs to procline the upper anterior teeth, then later I pull the posterior teeth forward two at a time.” Diagnosis/Model analysis • mild underbite • molar and canine Class III • mandibular model discrepancy of +1 Ceph analysis • Lower 1 to A.PO +4.6 m.m. (norm +2) • Witts –3.9 m.m. (indicating skeletal Class III) Case Study Patient History (Figs. 15 & 16) • 38-year-old male • Already had braces, but did not like his under-bite. Patient had been told that the only way to improve it was with orthognathic surgery, which he declined and decided to live with the underbite. • This was my first case with TNL Brackets. Fig. 17 34 Spring 2017 JAOS
Journal of the American Orthodontic Society Spring 2017: Page 34
