Effects of extraction orthodontic treatment on the upper airway dimensions in young adult patients with malocclusion
- VernacularTitle:拔牙矫治对年轻成年错畸形患者上气道大小的影响
- Author:
Kefeng XU
;
Wei CHEN
;
Yuehua LIU
- Publication Type:Journal Article
- Keywords:
Extraction orthodontic treatment;
Upper airway;
Cephalometry;
Dental cast analysis
- From:
Journal of Practical Stomatology
2001;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the effects of extraction orthodontic treatment on the upper airway dimensions in young adult patients with malocclusion,and to evaluate the relationship between changes in the craniofacial morphology,position of incisor and upper airway dimensions.Methods:26 patients with upper and lower first premolar extraction and 21 patients without extraction were recruited.Cephalometry and dental cast analysis were performed pretreatment and posttreatment.Results:No statistical difference was found in the parameters of the upper airway dimensions in both non-extraction group and extraction group after treatment.In linear correlation analysis,SPAS was positively correlated with cephalometric variables U1-Y and L1-Y.MAS and IAS was positively correlated with cephalometric variables SNB,U1-Y and L1-Y.The multiple regression analysis revealed that the change of U1-Y had a significant positive effect on SPAS and IAS,and the change of L1-Y also had a significant positive effect on SPAS and MAS.Conclusion:The upper airway dimensions can not be altered during extraction orthodontic treatment,while the changes of incisors are significant associated with the change of the upper airway dimensions.
