Three-dimensional analysis of pharyngeal airway in skeletal Class III patients after sagittal split ramus osteotomy.
- Author:
Hong-wei WANG
1
;
Jian-guo WANG
;
Su-qing QI
;
Zhi-fang CAI
;
Xin-hua LI
Author Information
- Publication Type:Journal Article
- MeSH: Adolescent; Adult; Cone-Beam Computed Tomography; Female; Humans; Hypopharynx; diagnostic imaging; Imaging, Three-Dimensional; Male; Malocclusion, Angle Class III; diagnostic imaging; surgery; therapy; Orthodontics, Corrective; Osteotomy, Sagittal Split Ramus; Pharynx; diagnostic imaging; Young Adult
- From: Chinese Journal of Stomatology 2012;47(4):221-224
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo analyze the three-dimensional changes of pharyngeal airway in patients with skeletal Class III malocclusion after the combined orthodontic and orthognathic treatment.
METHODSTwenty patients (9 males, 11 females) and 40 subjects with normal occlusion were involved in the study. Cone-beam computed tomography (CBCT) were performed on patients one week and six months after treatment. Raw data were reconstructed into three-dimensional model and sagittal and transversal measurements, cross sectional areas, partial and total volumes were computed.
RESULTSAfter treatment, the sagittal diameters of each section were significantly reduced by (2.7 ± 3.5), (3.0 ± 3.8), (2.7 ± 3.3) mm, respectively (P < 0.05). The transversal diameter of laryngopharyngeal airway constricted significantly by (4.8 ± 4.1) mm (P < 0.05). Cross sectional areas and volumes of each part in patients after surgery were significantly narrower compared with those of the controls.
CONCLUSIONSAfter combined therapy the pharyngeal airway space decreased.
