Fastuca Rosamaria, Perinetti Giuseppe, Zecca Piero Antonio, Nucera Riccardo, Caprioglio Alberto
a Resident, Postgraduate Orthodontic Program, University of Insubria, Varese, Italy.
b Research Fellow, Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy.
Angle Orthod. 2015 Nov;85(6):955-61. doi: 10.2319/072014-504.1.
To evaluate changes in airway volumes and respiratory performance in patients undergoing rapid maxillary expansion and determine whether any correlations exist between the morphological and respiratory functional modifications induced by rapid maxillary expansion and pretreatment airway stenosis.
Fifteen patients (11 females and 4 males; mean age, 7.5 ± 0.3 years) were enrolled in the study. Each patient underwent cone beam computed tomography and polysomnography examination before rapid maxillary expansion and after the removal of the maxillary expander 12 months later. The airway regions were segmented and the volumes were computed.
The upper, middle, and lower airway volumes were significantly increased 2305 mm(3), 1144 mm(3), and 1915 mm(3), respectively. Similarly, oxygen saturation was increased (+5.3%) and the apnea/hypopnea index was improved (-4.2 events). All the observed modifications were statistically significant (P < .05). Baseline middle and lower airway volume showed a significant negative correlation with the oxygen saturation modification.
The results of this study showed that when rapid maxillary expansion is performed in subjects having posterior crossbite, oxygen saturation is improved. The improvement is greater in subjects having more reduced middle and lower airway volumes.
评估接受快速上颌扩弓治疗患者的气道容积和呼吸功能变化，并确定快速上颌扩弓引起的形态学和呼吸功能改变与治疗前气道狭窄之间是否存在相关性。
本研究纳入15例患者（11例女性，4例男性；平均年龄7.5±0.3岁）。每位患者在快速上颌扩弓前及12个月后上颌扩弓器拆除后均接受锥形束计算机断层扫描和多导睡眠图检查。对气道区域进行分割并计算容积。
上、中、下气道容积分别显著增加2305mm³、1144mm³和1915mm³。同样，血氧饱和度升高（+5.3%），呼吸暂停/低通气指数改善（-4.2次事件）。所有观察到的改变均具有统计学意义（P<.05）。基线时的中、下气道容积与血氧饱和度改变呈显著负相关。
本研究结果表明，对患有后牙反合的受试者进行快速上颌扩弓时，血氧饱和度会得到改善。在中、下气道容积减小更明显的受试者中，改善更为显著。
