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Pre and post appliance therapy.
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The treatment was carried out for a total period of 8 weeks and a follow-up of two months after completion of the therapy (Figure 1).
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(a) Frontal view of the appliance with labial extension in the lower arch. (b) Posterior view of the appliance with occlusal plates and buccal extensions in both upper and lower arches. (c) Lateral view of the appliance with hyrax screws placed within the acrylic plates. (d) Intraoral placement with activated appliance and separation in progress.
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A lower labial extension was given for the appliance in order to prevent accidental breakage and subsequent aspiration of the appliance (Figure 2).
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