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CHANGES IN TONGUE POSITION, AIRWAY WIDTH, GONIAL ANGLE, LOWER FACIAL HEIGHT AFTER BILATERAL SAGITTAL SPLIT RAMUS OSTEOTOMY IN MANDIBULAR PROGNATHIC PATIENTS  

Lee, Kyu-Hong (Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center)
Hwang, Yong-In (Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center)
Kim, Yoon-Ji (Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center)
Cheon, Se-Hwan (Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center)
Kim, Hyung-Wook (Department of Oral & Maxillofacial Surgery, Kangdong Sacred Heart Hospital, Hallym University Medical Center)
Park, Jun-Woo (Department of Oral & Maxillofacial Surgery, Kangdong Sacred Heart Hospital, Hallym University Medical Center)
Rhee, Gun-Joo (Saem Dental Clinic)
Park, Yang-Ho (Department of Orthodontics, Kangdong Sacred Heart Hospital, Hallym University Medical Center)
Publication Information
Journal of the Korean Association of Oral and Maxillofacial Surgeons / v.33, no.2, 2007 , pp. 109-113 More about this Journal
Abstract
Introduction. In patients with mandibular prognathism, Bilateral Sagittal Split Ramus Osteotomy(BSSRO) combined with orthodontic treatment reduces oral volume and influences tongue and other surrounding tissues. Purpose of this study was to analyze post-operative tongue position and airway dimension, as well as mandibular changes in vertical, horizontal, and angular dimensions. Materials and methods. Height of dorsum of tongue, width of airway, gonial angle and lower facial height of mandibular prognathic patients who visited Kangdong Sacred Heart Hospital from Jan. 2001 to Dec. 2006 were anaylzed via pre-operative and post-operative cephalograms. T-test was used to compare pre-operative and post-operative measurements. Also, correlations among pre-operative measurements of the patients were analyzed. Results and conclusion. A significant correlation was shown between ANS-Xi-PM area and location of dorsum of tongue in pre-operative patients. A significant superior movement of tongue and decrease of airway width was observed in post-operative patients. Also the upper gonial angle decreased significantly.
Keywords
Tongue; Airway; Gonial angle; Lower facial height; Bilateral Sagittal Split Ramus Osteotomy(BSSRO);
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