论文部分内容阅读
目的:分析安氏Ⅱ类错软硬组织的生长特点以及相关性。方法:选择东莞市寮步医院于2013年1月至2015年9月收治的20例安氏Ⅱ类1分类和20例安氏Ⅱ类2分类患者,并采用电脑X射线头影测量技术分析安氏Ⅱ类1分类和安氏Ⅱ类2分类错软硬组织的差异性和相关性;结果:在软组织方面,两组患者在下唇突角(LLNs-FH)、上唇倾角(ULA’-FH)、上唇突角(ULNs-FH)、下唇-审美平面距(E-LL)以及鼻唇角(Cm-Sn-UL)等软组织5项测量指标组间比较,差异具有统计学意义(P<0.05);在硬组织方面,两组患者在上中切牙角(U1-SN)、ANB角、SNB角、面角(FH-NP)、L1-NB角、SND角、上下中切牙角(U1-L1)以及下中切牙角(L1-MP)等硬组织8项指标组间比较,差异具有统计学意义(P<0.05);相关性方面,不同项目之间的相关性不同。结论:安氏Ⅱ类1分类错的上前牙和上颌骨的突度对上下唇部软组织都有一定的影响,安氏Ⅱ类2分类仅上颌突度对下唇部软组织的位置有影响。
Objective: To analyze the growth characteristics and correlation of Class Ⅱ malocclusion soft and hard tissues. Methods: 20 patients with Class Ⅱ division 1 and 20 Class Ⅱ division 2 patients admitted from Liaobu Hospital in Dongguan from January 2013 to September 2015 were selected and analyzed by computerized X-ray cephalometry (LLNs-FH), upper lip inclination (ULA’-FH), upper lip inclination (ULA’-FH) (P <0.05). There were statistically significant differences between the 5 measurement indexes of soft tissues such as ULNs-FH, E-LL and Cm-Sn- <0.05). In the aspect of hard tissue, the U1-SN, ANB, SNB, FH-NP, L1-NB, SND, (U1-L1) and lower incisor angle (L1-MP) were significantly different between the eight groups (P <0.05). In the correlation aspect, the correlation between different items was different . CONCLUSIONS: The anterior angle of Class Ⅱ division 1 malocclusion has a certain influence on the soft tissues of upper and lower lip. Class Ⅱ division 2 maxillary protrusion only affects the position of lower lip soft tissue .