Effects of sagital split ramus osteotomy surgery on hyoid position and pharyngeal airway with skeletal mandibular prognathism
- VernacularTitle:下颌升枝矢状劈开截骨术对骨性下颌前突舌骨位置和气道宽度的影响
- Author:
Lin LIU
;
Weidong MA
;
Weiguo QU
- Publication Type:Journal Article
- Keywords:
Skeletal mandibular prognathism;
SSRO;
Hyoid bone;
Airway
- From:
Journal of Practical Stomatology
1995;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the changes of hyoid position and pharyngeal airway before and after sagittal split ramus osteotomy (SSRO) of skeletal mandibular prognathism. Methods:Sixteen severe skeletal mandibular prognathism cases(Class Ⅲ, 5 males and 11 females) were chosen. Pre and post operation lateral cephalograms analysis reflecting pharyngeal airway and position of the hyoid bone was performed. Results: ① After SSRO, the width of airway decreased significantly. ② The distance between the mandible and the hyoid bone was also decreased significantly. No significant differences were found regarding measurements of the hyoid bone to the cranial base in male patients. Conclusion: The distance from the mandible to the hyoid bone and the width of airway were decreased significantly after SSRO. It suggests that the tongue and airway might be reformed functionally to new environments following SSRO surgical treatment.
