CAJ | 학술논문

目的对比研究 I 类错牙合畸形患者应用拔牙矫治与非拔牙矫治对口咽气道容积的影响。方法选取2010年5月至2013年3月接受错牙合畸形矫治的97位 I 类错牙合畸形患者作为研究对象。根据矫治方法不同，分为实验组（拔牙矫治）和对照组（非拔牙矫治）。利用回顾性分析方法，收集患者矫治后的基础临床资料以及影像学资料。结果组内比较：两组患者矫治后面中部长度、下颌骨长度较矫治前长；拔牙矫治组矫治后上中切牙倾角、下中切牙倾角较矫治前减小。非拔牙矫治组矫治后上中切牙倾角、下中切牙倾角较矫治前增大。矫治前后各项指标差异均具有统计学意义（ P ﹤0.05）。组间比较：矫治前两组各项影像学指标差异无统计学意义（ P ﹥0.05），但矫治后拔牙矫治组面中部长度、下颌骨长度更短于非拔牙矫治组；上中切牙倾角、下中切牙倾角小于非拔牙矫治组；口咽气道容积及最狭窄部位面积均大于非拔牙矫治组。矫治后两组各项指标差异均具有统计学意义（ P ﹤0.05）。结论拔牙矫治在Ⅰ类错牙合畸形的治疗中，对口咽气道容积的影响更为积极，应在Ⅰ类错牙合畸形的治疗中引起足够重视。
목적대비연구 I 류착아합기형환자응용발아교치여비발아교치대구인기도용적적영향。방법선취2010년5월지2013년3월접수착아합기형교치적97위 I 류착아합기형환자작위연구대상。근거교치방법불동，분위실험조（발아교치）화대조조（비발아교치）。이용회고성분석방법，수집환자교치후적기출림상자료이급영상학자료。결과조내비교：량조환자교치후면중부장도、하합골장도교교치전장；발아교치조교치후상중절아경각、하중절아경각교교치전감소。비발아교치조교치후상중절아경각、하중절아경각교교치전증대。교치전후각항지표차이균구유통계학의의（ P ﹤0.05）。조간비교：교치전량조각항영상학지표차이무통계학의의（ P ﹥0.05），단교치후발아교치조면중부장도、하합골장도경단우비발아교치조；상중절아경각、하중절아경각소우비발아교치조；구인기도용적급최협착부위면적균대우비발아교치조。교치후량조각항지표차이균구유통계학의의（ P ﹤0.05）。결론발아교치재Ⅰ류착아합기형적치료중，대구인기도용적적영향경위적겁，응재Ⅰ류착아합기형적치료중인기족구중시。
Objective To study the effect of contrast in the class I malocclusion patients application of orthodontic extraction and non ex-traction orthodontic treatment for oropharyngeal airway volume. Methods From 2010 May to 2013 March,97 class I malocclusion patients in our hospital accepting the malocclusion correction were included as the research object. According to the different treatment method,these cases were divided into experimental group(extraction treatment)and control group(non extraction treatment). By using the retrospective analysis method, data were collected after treatment the clinical data and imaging basis. Results After the group comparison,the central length,mandibular length of two groups of patients with malocclusion is correct before long. Correctional tooth extraction in the treatment group after middle incisor inclination and lower incisor inclination reduced compared with before correction. The correctional tooth extraction treatment group after middle incisor inclina-tion and lower incisor inclination in the former can increase a correction. Rectifying the indicators before and after the differences were statistically significant( P ﹤ 0. 05). The treatment for the first two group of each imaging index difference has no statistical significance( P ﹥ 0. 05),but mandibular length is shorter in the tooth extraction treatment group after correctional tooth extraction rectification group central length. Middle inci-sor inclination angle,tooth angle is less than the tooth extraction in treatment group. The oropharyngeal airway volume and the narrowest part area were greater than the tooth extraction treatment group. After treatment,indicators are similar between the two groups have statistical significance( P ﹤ 0. 05). Conclusion Tooth extraction rectification in the treatment of the class I malocclusion,the oropharyngeal airway volume effect have more positive affection,should be in the treatment of the class I malocclusion caused enough attention.