PMC5949202_01
Pretreatment photograph of tooth 12, 21, and 22 in crossbite.
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Three of his permanent maxillary teeth, right lateral incisor (tooth 12), left central incisor (tooth 21), and left lateral incisor (tooth 22), were in a crossbite relationship (Figure 1).
Sectional short-span wire-fixed orthodontic appliance in place during treatment.
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A short-span nickel-titanium (Ni-Ti) 0.014'' round archwire is cut equally on both sides of the centreline and placed into the bracket slots (Figure 2).
Posttreatment photograph at 3-month review after correction of the anterior crossbite.
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At 3-month review, the incisor teeth were still in positive overjet (Figure 3).
PMC5949202_02
Pretreatment photograph of tooth 11 in crossbite.
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In occlusion, tooth 11 was trapped between tooth 41 and the permanent mandibular right lateral incisor (tooth 42) (Figure 4).
Sectional short-span wire-fixed orthodontic appliance in place during treatment.
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fig5
A short Ni-Ti 0.014'' round archwire was placed into the brackets and held in place with elastic ties (Figure 5).
Posttreatment photograph at 6 months after correction of the anterior crossbite.
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The occlusion was stable, and the gingival height of tooth 41 showed significant improvement at 6-month review (Figure 6).
PMC5949202_03
Pretreatment photograph of tooth 12 and 22 in crossbite.
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The permanent maxillary lateral incisors (teeth 12 and 22) were trapped palatally in an anterior crossbite behind the maxillary deciduous canines (teeth 53 and 63) and the permanent maxillary central incisors (teeth 11 and 21), respectively (Figure 7).
Panoramic radiograph view taken 6 months before treatment showing the position of permanent maxillary canines in relation to their primary predecessors and maxillary permanent lateral incisors.
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fig8
A panoramic radiograph taken a year ago showed the presence of tooth germs of the permanent maxillary canines in a favourable position with no overlapping of the crowns over the roots of teeth 12 and 22 (Figure 8).
Sectional short-span wire-fixed orthodontic appliance in place during treatment.
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fig9
Then, four preadjusted edgewise brackets were bonded to the labial surfaces of the maxillary incisors, and a short Ni-Ti 0.014'' round archwire was placed into the brackets and held in place with elastic ties (Figure 9).
Posttreatment photograph at 6 months after correction of the anterior crossbite.
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At 6-month review, the corrected teeth were still in positive overjet (Figure 10).