ortho - the international C.E. magazine of orthodontics

ortho1_201334 I I technique_ appliances Ateightmonths,theupperelasticchainischanged toclosetheremainingspace.Inthemandibulararch, a.0215x.028Bioforcearchwireisplacedandapano- ramic X-ray is taken to verify the root positions and their parallelism (Figs. 36–45). At 10 months, a full-sized .0215 x .028 Bioforce archwire was placed in the maxillary arch to allow the wire to interact with the customized bracket prescriptiontoproducethepropertorqueandangu- lationforeachindividualtooth.TheNanceAppliance is also removed at this time. Elastics are now placed to start the working phase of treatment to correct the biting relationship, with a Class II elastic being employed on the left side to correct the midline dis- crepancy (Figs. 46–49). At 12 months, the final set of .018 stainless-steel archwires with soldered spurs are placed to provide forthefinalizationofthebitingrelationship,andthe seating of the cusps. The mandibular midline is still off to the left, so short triangular elastic are being utilized to correct the midline and seat the cusps. This process of detailing will continue for six months to ensure the proper alignment and occlusion is achieved to promote the stability of the final occlu- sion (Figs. 50–54). At 18 months, the appliances are removed and final treatment records are obtained. Results were achievedwithonly14appointmentsandlessthansix hours of chair time was needed to successfully treat this case (Figs. 55–64). Figs. 36–45_At eight months, the upper elastic chain is changed to close space and a panoramic X-ray taken to check for root parallelism. Fig. 36 Fig. 37 Fig. 38 Fig. 41Fig. 40 Fig. 39 Fig. 42 Fig. 43 Fig. 44 Fig. 45