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  • Title: Intrusion of maxillary incisors by mini-screw anchorage of Angle Class II division 2 malocclusion cases.
    Author: Al-Falahi BA, Hammad SM, El-Kenawy MH, Fouda MA.
    Journal: Int J Orthod Milwaukee; 2012; 23(4):29-35. PubMed ID: 23413639.
    Abstract:
    OBJECTIVES: to evaluate the effects of the upper incisor teeth intrusion by mini-screw on the amount of overbite and on the dental and skeletal parameters of the jaws. MATERIAL AND METHODS: Ten patients were selected from the outpatient clinic of the Department of Orthodontics, Faculty of Dentistry, Mansoura University with Angle's Class II division 2 malocclusions. Ages ranged from 13 to 19 years with deep overbite of 4mm or more requiring intrusion of the maxillary incisors. Alignment of the upper and lower dental arches was done with a pre-adjusted edgewise technique, then a mini-screw as anchorage for the intrusion of the upper incisor segment was inserted for every patient below the anterior nasal spine connected to a utility arch wire. RESULTS: The overbite was corrected from 6 mm to 1.8 mm (p<.001) by upper incisor intrusion and the gummy smile was improved. No extrusion of upper first permanent molars was observed. CONCLUSIONS: The maxillary incisors were effectively intruded by using mini-screws as orthodontic anchorage. Good occlusion and facial esthetics were achieved with no counteractive movements in the molars.
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