Title: Comparison of the Condylar Positional Changes between the Two Sides after Asymmetric Andibular Setback
Abstract: Objective: To compare the positional changes of the condylar between greater setback side(GSS) and lesser setback side(LSS) after asymmetric mandibular setback(AMS) using cone beam computed tomography(CBCT).Methods: 16 skeletal class Ⅲ malocclusion patients with mandibular prognathism and facial asymmetry,who underwent bilateral sagittal split ramus osteotomy(BSSRO) with miniplate rigid internal fixation,were assessed by CBCT before surgery(T0) and 1 week after surgery(T1).Results: At T0 stage,all the variables,except for coronal condylar head long axis angle(CHA),showed significant difference.At T1 stage,the coronal condylar neck long axis angle(CNA) showed significantly different between the two sides.The axial condylar head long axis angle(AHA) in both GSS and LSS,the CNA in the lesser setback side and the anteroposterior condylar position(AP) in GSS on the sagittal view showed statistically different from that at T0 stage.As far as the magnitude of the change,only the axial mediolateral condylar position and the sagittal anteroposterior condylar position showed statistically different between two sides.Conclusion: These results suggest that AMS by SSRO with RIF might bring some different effects to the condylar in GSS and LSS.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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