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ePaper created 2018-03-13, 09:28:55 | version 1.38.0
| research Fig. 18a Fig. 18b Fig. 18c Fig. 19a Fig. 19b Fig. 19c Fig. 19d Fig. 20 Fig. 21a Fig. 21b Fig. 21c One case treated with open-flap corticotomy and two cases treated with MOP will be shown to elucidate the concepts described in this article. Case 1 A 19-year-old male patient with a Class III dental mal- occlusion with anterior midline discrepancy wanted to be treated only with aligners (Figs. 14a & b). Treatment was carried out with 71 aligners and two MOPs performed at the second month and at the fifth month of treat- ment, only on the premolar and molar maxillary dentition (Fig. 15). Class III elastics were prescribed throughout the therapy. Treatment was completed in seven months with acceptable intercuspation in the buccal segments and correction of the midlines (Figs. 16a & b) and with good anchorage control in the lower arch (Fig. 17). Case 2 A 22-year-old female patient with a Class II, Division 1 dental malocclusion with a missing mandibular right first molar and mandibular anterior midline deviated toward the right presented for treatment (Figs. 18a–c). The treat- ment plan was to extract the maxillary first premolars and close the mandibular right molar space with minimum anchorage. MOPs were performed after insertion of the mandibular working wire (0.019 × 0.025 in., stainless steel; Figs. 19a–d). Nickel-titanium closed coil springs were applied right after the decortication (Fig. 20). Treat- ment was completed with good intercuspation, coinci- dent midlines and all spaces well closed (Figs. 21a–c). Figures 22a to d show the dental panoramic tomograms and lateral cephalometric radiographs before and after treatment. 26 ortho 1 2018