Cappellette Mario, Alves Fabio Eduardo Maiello Monteiro, Nagai Lucia Hatsue Yamamoto, Fujita Reginaldo Raimundo, Pignatari Shirley Shizue Nagata
Universidade Federal de São Paulo (UNIFESP/EPM), Department of Otorhinolaryngology and Head and Neck Surgery, São Paulo, Brazil.
Dental Press J Orthod. 2017 May-Jun;22(3):79-88. doi: 10.1590/2177-6709.22.3.079-088.oar.
: To assess the volumetric changes that occur in the nasomaxillary complex of mouth-breathing patients with transverse maxillary deficiency subjected to rapid maxillary expansion (RME).
: This was a controlled, prospective intervention study involving 38 mouth-breathing patients presenting with transverse maxillary deficiency, regardless of malocclusion type or race. Twenty-three of them comprised the experimental group, which was composed of 11 (47.8%) boys, and 12 (52.2%) girls, with a mean age of 9.6 years, ranging from 6.4 to 14.2 years and standard deviation of 2.3 years; and 15 of them comprised the control group, composed of 9 (60%) boys and 6 (40%) girls with an mean age of 10.5 years, ranging from 8.0 to 13.6 years, and standard deviation of 1.9 years. All patients were scanned (CT) according to a standard protocol: Initial CT (T1), and CT three months thereafter (T2), and the patients in the experimental group were treated with RME using a Hyrax expander for the correction of maxillary deficiency during the T1-T2 interval. The CT scans were manipulated using Dolphin® Imaging version 11.7 software for total and partial volumetric assessment of the nasomaxillary complex.
: The results revealed that in the experimental group there was a significant increase in the size of the structures of interest compared to the control group, both in general aspect and in specific regions.
: Rapid maxillary expansion (RME) provided a significant expansion in all the structures of the nasomaxillary complex (nasal cavity, oropharynx, right and left maxillary sinuses).
评估接受快速上颌扩弓（RME）治疗的上颌横向发育不足的口呼吸患者鼻上颌复合体的容积变化。
这是一项对照性前瞻性干预研究，纳入了38例上颌横向发育不足的口呼吸患者，不考虑错牙合类型或种族。其中23例组成实验组，包括11名（47.8%）男孩和12名（52.2%）女孩，平均年龄9.6岁，年龄范围为6.4至14.2岁，标准差为2.3岁；15例组成对照组，包括9名（60%）男孩和6名（40%）女孩，平均年龄10.5岁，年龄范围为8.0至13.6岁，标准差为1.9岁。所有患者均按照标准方案进行扫描（CT）：初始CT（T1），以及此后三个月的CT（T2），实验组患者在T1 - T2期间使用Hyrax扩弓器进行RME治疗以纠正上颌发育不足。使用Dolphin® Imaging 11.7版软件对CT扫描图像进行处理，以对鼻上颌复合体进行整体和局部容积评估。
结果显示，与对照组相比，实验组感兴趣结构的大小在整体和特定区域均有显著增加。
快速上颌扩弓（RME）使鼻上颌复合体的所有结构（鼻腔、口咽、左右上颌窦）均有显著扩大。
