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CASE REPORT
Year : 2017  |  Volume : 8  |  Issue : 1  |  Page : 31-37

Skeletal Class II division 1 malocclusion treated with twin-block appliance


Department of Orthodontics, JSS Dental College and Hospital, JSS University, Mysore, Karnataka, India

Correspondence Address:
Pratik Patel
Department of Orthodontics, JSS Dental College and Hospital, JSS University, Mysore, Karnataka
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2349-5243.200217

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A 10-year-old female presented with a skeletal Class II relation with 7 mm of overjet, 40% overbite, and bilateral posterior lingual crossbite. Two-phase therapy was planned to correct Class II skeletal relation, overjet, overbite, and to achieve lip competency. Phase I therapy was done with twin-block appliance to advance the retrognathic mandible. Phase II therapy was accomplished with fixed appliance for arch coordination to correct minor displacement and to finalize occlusion. Posttreatment, skeletal Class I relation was achieved. Incisors' inclination was improved, and ideal overjet and overbite with bilateral class I molar relationship was achieved. As the mandible advanced, lip competency, facial convexity, and mentolabial sulcus improved.


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