College of Dentistry, Riyadh Elm University, Riyadh 11564, Saudi Arabia.
Department of Preventive Dental Science, College of Dentistry, Riyadh Elm University, Riyadh 11564, Saudi Arabia.
Int J Environ Res Public Health. 2021 Jan 10;18(2):517. doi: 10.3390/ijerph18020517.
The aim was to compare the influence of fixed orthodontic therapy (OT) on the pharyngeal airway space dimensions after correction of class-I, -II and -III skeletal profiles and among untreated adolescent patients. A control group comprising of untreated patients was also included. Demographics and OT-related information was retrieved from patients' records. Measurements of airway spaces in the nasopharynx, oropharynx and hypopharynx were performed on lateral cephalograms. -values under 0.05 were considered statistically significant. The results showed no statistically significant differences in the naso-, oro- and hypo-pharyngeal airway spaces among patients with class-I, -II and -III skeletal profiles and individuals in the control group. There were no statistically significant differences when naso-, oro- and hypo-pharyngeal airway spaces were compared among patients with class-I, -II and -III skeletal profiles. In conclusion, in non-extraction cases without maxillary expansion, fixed OT does not affect the naso-, oro- and hypo-pharyngeal airway spaces in patients with skeletal Class-I, -II and -III skeletal profiles. Further studies involving patients undergoing ME and premolar extraction are needed to elucidate the influence of fixed OT on the naso-, oro- and hypo-pharyngeal airway spaces.
目的是比较固定正畸治疗（OT）对 I 类、II 类和 III 类骨骼畸形矫正后咽腔气道空间尺寸的影响，并比较未治疗的青少年患者之间的影响。还纳入了一组未治疗的对照组患者。从患者的记录中检索人口统计学和与 OT 相关的信息。在侧位头颅侧位片上测量鼻咽、口咽和下咽的气道空间。p 值小于 0.05 被认为具有统计学意义。结果显示，I 类、II 类和 III 类骨骼畸形患者与对照组患者之间的鼻咽、口咽和下咽气道空间无统计学差异。I 类、II 类和 III 类骨骼畸形患者之间的鼻咽、口咽和下咽气道空间也无统计学差异。结论：在不进行上颌扩弓的非拔牙病例中，固定正畸治疗不会影响 I 类、II 类和 III 类骨骼畸形患者的鼻咽、口咽和下咽气道空间。需要进一步研究接受上颌扩展和前磨牙拔除的患者，以阐明固定正畸治疗对鼻咽、口咽和下咽气道空间的影响。
