Severe skeletal bimaxillary protrusion treated with micro-implants and a self-made four-curvature torquing auxiliary: A case report

Figure 1 Pretreatment appearance. A: Facial photographs; B: Intraoral photographs; C: Radiographs.

Figure 2 Dental casts. A: Pretreatment; B: Posttreatment.

Figure 3 Appearance during treatment, after leveling and alignment. A: Facial photographs; B: Intraoral photographs; C: Radiographs.

Figure 4 Appearance during treatment, at progress I stage after extraction of the four first premolars. A: Facial photographs; B: Intraoral photographs (black arrows indicate the self-made four-curvature torquing auxiliary); C: Radiographs.

Figure 5 Appearance during treatment, at progress II stage after extraction of the four first premolars. A: Intraoral photographs (black arrows indicate the self-made four-curvature torquing auxiliary); B: Radiographs.

Figure 6 Posttreatment appearance. A: Facial photographs; B: Intraoral photographs; C: Radiographs.

Figure 7 Appearance at 2-year follow-up. A: Facial photographs; B: Intraoral photographs; C: Radiographs.

Figure 8 Facial profile photographs and cephalometric superimpositions. A: Tracing comparison of facial profile photographs at the five different stages of pretreatment, leveling and aligning, progress I, posttreatment, and 2-year follow-up; B: Superimposition at the five stages; C: Superimposition at pretreatment (black) and leveling and aligning (green); D: Superimposition at pretreatment (black) and posttreatment (red); E: Superimposition at pretreatment (black) and 2-year follow-up (blue, showing retention).