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A comparative study of initial lateral cephalometric characteristics: mandibular setback surgery only versus mandibular setback surgery with advancement genioplasty  

Kim, Jae-Sik (Department of Orthodontics, School of Dentistry, Kyunghee University)
Kim, Jung-Il (Kooalldam Dental Hospital)
Kang, Seung-Goo (Department of Orthodontics, School of Dentistry, Kyunghee University)
Publication Information
The korean journal of orthodontics / v.38, no.1, 2008 , pp. 41-51 More about this Journal
Abstract
Objective: The aim of this study was to compare the initial lateral cephalometric characteristics in two groups of patients: those that had mandibular setback surgery only and those that had mandibular setback surgery with advancement genioplasty. Methods: The lateral cephalograms of thirty-one patients were studied. Twenty-one Class III patients (group A) had only madibular setback surgery Twelve Class III patients (group B) had mandibular setback surgery with advancement genioplasty. Results: Differences between two groups were found in N-Me, ANS-Me, Occlusal Plane angle, Palatal Plane to U1, Mandibular Plane to L1, Mandibular Plane to L6, SN to U1, Sn-Stms, and Pog' projection. Compared to group A, group B showed more linguoversion and extrusion of upper incisors, more extrusion of lower incisors and lower first molar, and more steepness of the occlusal plane. N-Me, ANS-Me, and Sn-Stms were also longer in group B. But Pog' projection was shorter than group A. Conclusion: We conclude that certain initial lateral cephalometric characteristics may help indicate the inclusion of advancement genioplasty when mandibular setback surgery is planned in skeletal Class III patients.
Keywords
Orthognathic surgery; Advancement genioplasty; Class III malocclusion;
Citations & Related Records
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Times Cited By Web Of Science : 0  (Related Records In Web of Science)
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