A comparative study of initial lateral cephalometric characteristics: mandibular setback surgery only versus mandibular setback surgery with advancement genioplasty.
10.4041/kjod.2008.38.1.41
- Author:
Jae Sik KIM
1
;
Jung Il KIM
;
Seung Goo KANG
Author Information
1. Department of Orthodontics, School of Dentistry, Kyunghee University, Korea. orthodrk@khu.ac.kr
- Publication Type:Comparative Study ; Original Article
- Keywords:
Orthognathic surgery;
Advancement genioplasty;
Class III malocclusion
- MeSH:
Dental Occlusion;
Genioplasty;
Humans;
Incisor;
Molar;
Orthognathic Surgery
- From:Korean Journal of Orthodontics
2008;38(1):41-51
- CountryRepublic of Korea
- Language:Korean
-
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.
