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功能矫治器治疗Ⅱ类后缩型错(牙合)儿童的口咽气道尺寸。

Oropharyngeal airway dimensions after treatment with functional appliances in class II retrognathic children.

机构信息

CES-LPH Research Group, CES University, Medellin, Colombia.

出版信息

J Oral Rehabil. 2011 Aug;38(8):588-94. doi: 10.1111/j.1365-2842.2011.02199.x. Epub 2011 Feb 5.

Abstract

Class II skeletal malocclusion and respiratory disorders owing to the obstruction of the upper airway at early growth stages have been correlated. The retro/micrognathism can be treated with functional appliances. However, the effects of an early functional orthopedic treatment on the airway dimensions have not been evaluated before the growth peak. Therefore, the objective of this study was to evaluate the changes in the airway dimensions of class II retrognathic children who received treatment with either Klammt or Bionator on a pre-pubertal stage. The sample consisted of 50 lateral cephalograms of class II retrognathic patients in a pre-puberal stage, before and after the use of a Klammt or Bionator II treatment for 1 year. The data were evaluated by Student's t-test or Mann-Whitney test, and significance was set at 5% (P < 0·05). When the measurements before and after treatment were compared, a statistically significant increase in the airway dimensions was found at the space where the adenoid tissue was located. The only airway dimensions that increased after treatment with functional appliances were the ones located at the nasopharynx. The adenoid tissue is still in the peak of growing at the ages of the subjects included in this study. However, the measurements along the nasopharynx increased when compared with the initial ones. Still, similar retrospective and prospective studies are needed at older stages.

摘要

在生长早期,II 类骨骼错颌畸形和上呼吸道阻塞引起的呼吸障碍有关。可以使用功能性矫治器治疗后缩/小下颌。然而,在生长高峰期之前,尚未评估早期功能性矫形治疗对上气道尺寸的影响。因此,本研究的目的是评估在青春期前阶段使用 Klammt 或 Bionator II 治疗的 II 类后缩型儿童的气道尺寸变化。该样本包括 50 名青春期前 II 类后缩型患者的侧颅面片,在使用 Klammt 或 Bionator II 治疗 1 年后,分别对治疗前后的气道尺寸进行了评估。采用 Student's t 检验或 Mann-Whitney 检验进行数据分析,以 5%(P < 0·05)为差异有统计学意义。当比较治疗前后的测量值时,在腺样体所在的空间发现气道尺寸有统计学意义的增加。仅在使用功能性矫治器治疗后,鼻咽气道尺寸增加。在本研究中纳入的研究对象年龄,腺样体仍处于生长高峰期。然而,与最初的测量值相比,鼻咽部的测量值增加了。仍需要在更年长的阶段进行类似的回顾性和前瞻性研究。

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