Improved super-elastic Ti–Ni alloy wire intrusion arch for skeletal class II malocclusion combined with deep overbite: A case report

Figure 1 Pretreatment photographs (21 years 4 months old). A-C: Facial profiles; D-K: Intraoral photographs.

Figure 2 Radiograph. A: Pretreatment panoramic radiograph; B: Lateral cephalometric radiograph; C: Anteroposterior cephalometric radiograph (21 years 4 mo old).

Figure 3 Polygon: Before active treatment.

Figure 4 Progressive intraoral photographs. A-C: 4 mo; D-F: 15 mo; G-I: 24 mo.

Figure 5 Posttreatment photographs (24 years 2 mo old). A-C: Facial profiles; D-K: Intraoral photographs.

Figure 6 Radiograph. A: Posttreatment panoramic radiograph; B: Lateral cephalometric radiograph; C: Anteroposterior cephalometric radiograph (24 years 2 mo old).

Figure 7 Superimposition of pretreatment and posttreatment. A: Superimposed on sella-nasion plane at S; B: Superimposed on palatal plane at anterior nasal spine and Mandibular plane at Me. SN: Sella-Nasion plane; S: Sella; ANS: Anterior Nasal Spine; Me: Menton.

Figure 8 Polygon: Before and after active treatment. SN: Sella-Nasion plane; FMIA: The Frankfort-Mandibular Incisor Angle; FH: Frankfort horizontal plane; SNA: Sella-nasion-A point; SNB: Sella-nasion-B point.

Figure 9 Overjet reduction methods. ISW: Improved super-elastic Ti–Ni alloy wire.

Figure 10  Strategy of intrusion. ISW: Improved super-elastic Ti–Ni alloy wire.

Figure 11  Introduction of an improved super-elastic Ti–Ni alloy wire intrusion arch. A: Lateral view; B: Frontal view.