PMC3915325_01
Extra oral photographs before treatment. Frontal view: no evident asymmetry with good head posture. Upper dental midline is aligned with the facial one. Lateral view: No labial incompetence was present.
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The extraoral and intraoral photographs of the patient are reported in Fig. (1) and Fig. (2).
PMC3915325_02
Cephalometric values and panoramic radiograph at the start of treatment. From left to right: value measured, average value from the population norm, standard deviation of the average value from the population norm, difference from the extreme value of the population norm. Red: values above the norm, Green: values below the norm, Black: values within the norm.
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PMC3915325_03
Recovery of the impacted right maxillary canine. The effects of a 0.019x0.025 TMA Cantilever, activated for obtainind extrusion and labial movement are shown (A-D). Correction of canine torque (E-F).
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The extrusion of the maxillary right canine was obtained by inserting a third order bend (read as a buccal root torque of the molar) at the insertion of the maxillary molar (Fig. 4).
Correction of tooth transposition. Cantilevers 0.019x0.025 (TMA, Ormco, Orange, Ca, US) were used. A) Cantilever inserted into 3.3 bracket slot and mesial to 4.6 to correct canine rotation. B) Impacted lower incisor was bonded and attached to a round superelastic archwire. C) Cantilevers for extrusion of 4.2 and for correction of canine rotation. D) Cantilever for intrusion of 4.3. E) Powerchain attached to lateral incisor to correct tooth rotation. Opel Ni-Ti coil spring is in place. F-G-H) The lower incisor is moved to its final position. I) Correction of torque of the lower incisor by using a -14 degrees torque bracket.
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Two cantilevers were deisgned to extrude 3.2 and correct the rotation of 3.3 (Fig. 5).
PMC3915325_04
Intraoral photographs after treatment.
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The intraoral and extraoral photographs after treatment are presented in Fig. (6) and Fig. (7).
Cephalmetric values and panoramic radiograph just before the end of treatment, before final debonding. From left to right: value measured, average value from the population norm, standard deviation of the average value from the population norm, difference from the extreme value of the population norm. Red: values above the norm, Green: values below the norm, Black: values within the norm
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Cephalometric values after treatment and tracing superimpositions are shown in Fig. (8 and Fig. 9).
PMC3915325_05
CASE 2 - Pre-treatment records.
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The extraoral and intraoral photographs of the patient are reported in Fig. (10).
CASE 2 - Cantilever in place (A-B-C). Progressive activation of the cantilever (D-J), correction of tooth rotation (D-E), correction of torque (K-L).
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The effects of the cantilevers are shown in Fig. (11).
CASE 2 Post-treatment records. Radiographs were collected before final debonding.
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Post-treatment records are presented in Fig. (12).
PMC3915325_06
CASE 3 - Pre-treatment records.
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The extraoral and intraoral photographs of the patient are reported in Fig. (13).
CASE 3 - Cantilever in place (A-B). Progressive activation of the cantilever (C), correction of tooth rotation (D-E), correction of torque (F-G).
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CASE 3 - Post-treatment records.
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