Treatment of severe open bite and mandibular condyle anterior displacement by mini-screws and four second molars extraction: A case report

Figure 1 Pretreatment facial and intraoral photographs. A: Facial photographs; B: Intraoral photographs.

Figure 2 Pretreatment dental models. A: Right lateral view; B: Frontal view; C: Left lateral view; D: Upper occlusal view; E: Lower occlusal view.

Figure 3 Pretreatment lateral cephalometric and panoramic radiographs. A: Lateral cephalometric radiographs and tracing; B: Panoramic radiograph.

Figure 4 Cone-beam computed tomography images of the temporomandibular joint. A: Pretreatment; B: Posttreatment.

Figure 5 Treatment progress. A: 2 mo. The four second molars were extracted and 4 mini-implants were implanted to intrude the second premolars and the first molars;B: 8 mo. The anterior open bite was corrected but bilateral posterior open bite occurred; C: 17 mo. After fine adjustment, Class I molar relationship and normal overjet and overbite were obtained; D: Posttreatment facial and intraoral photographs.

Figure 6 Posttreatment dental models. A: Right lateral view; B: Frontal view; C: Left lateral view; D: Upper occlusal view; E: Lower occlusal view.

Figure 7 Posttreatment lateral cephalometric and cone-beam computed tomography reconstructed panoramic radiographs. A: Lateral cephalometric radiographs and tracing; B: Cone-beam computed tomography reconstructed panoramic radiographs.

Figure 8 Cephalometric superimpositions. A: Overall superimposition; B: Maxillary superimposition; C: Mandibular superimposition. Black: Pretreatment; Red: Posttreatment.

Figure 9 Lateral cephalometric radiographs superimposition.

Figure 10  Cone-beam computed tomography 3D superimposition. A: Right side; B: Left side. Red: Pretreatment; Green: Posttreatment.