查询词典 malocclusion

The incidence of Angle Class II malocclusion for children in Taiwan is between 17~29 percent.

中文摘要台湾地区安格式二级异常咬合儿童的发生率约在1729 ％之间，是矫正门诊中很常遇到的病人类型，且通常在混合齿列即表现出异常的颅颜结构表徵。

Malocclusion would occur after TMJ arthroscopic disc reposition and fixation. Most of them would recover in 28 days after operation. However, if malocclusion lasts for 28 days, intermaxillary elastic traction is highly recommended.

颞下颌关节镜下盘复位固定术会导致错的发生，多数患者于术后28d内恢复；若患者术后28d后仍存在错，应考虑采用颌间弹性牵引进行治疗。

Objective To do three dimensional facial soft tissue morphometry and analysis of class Ⅰ and class Ⅱ malocclusion in order to evaluate the characteristics and differences of the two facial patterns.Methods 20 class Ⅰ and 20 class Ⅱ malocclusion subjects were selected for the study.

面部的平衡和协调是由面部软硬组织共同决定的，由于存在软组织的代偿机制及其发育的相对独立性，软硬组织并不总是协调一致的[1～ 3] 。

AngleⅢmalocclusion with TMD Compared with AngleⅢmalocclusion and thenormal group. In AngleⅢmalocclusion with TMD. there have greatly significant variations,transversely. During mandible open and close, the protrusion and reptrution in anydirections and medio movement in no-work sides,the range of condyle pathways of AngleⅢmalocclusion with TMD are bigger than the AngleⅢmalocclusion but shorterthan that of the normal group.

4在AngleⅢ类错伴TMD组和对照组AngleⅢ类错(牙合组、正常组相比：各项运动在Y轴上位移变异最大，在开闭口运动和前伸后退及侧方运动非工作侧中髁突运动最大位移范围基本上是正常组＞AngleⅢ类错伴TMD组＞AngleⅢ类错组。

There are differences in upper lip and mentolabial sulcus. For class III malocclusion there are significant differences in lower lip and mentolabial sulcus. There are differences in subnasale . Campared with the facial soft tissue thickness of class II malocclusion , for class III malocclusion there are significant differences in lower lip. There are differences in subnasale and upper lip.

与安氏Ⅰ类错合患者相比，安氏Ⅱ类错合患者的颅面部软组织覆盖厚度在鼻底部有显著性差异，在上唇和颏唇沟有差异；安氏III类错合患者的颅面部软组织覆盖厚度在下唇和颏唇沟有显著性差异，在鼻底部有差异；安氏Ⅱ类错合患者的颅面部软组织覆盖厚度与安氏III类错合患者相比，在下唇有显著性差异，在鼻底部和上唇有差异。

The result manifest that characteristic of chin soft tissue profile of bony malocclusion of class I had bigger angle of chin-lip, shallower mentolabial furrow,smaller radian and larger convexity compared to that of bony malocclusion of class II, and smaller angle of chin-lip, deeper mentolabial furrow,larger radian and smaller convexity compared to that of bony malocclusion of class III.

测量结果显示：骨性II类错牙合颏部相对于正常牙合发育不足，颏唇角小，颏唇沟深，弧度较大，突度较小。而骨性III类错牙合相对于正常牙合颏部发育过度，颏唇角大，颏唇沟浅，弧度较小，突度较大。

But the value of H angle is smaller than class I malocclusion . Campared with the data of class II malocclusion , for class III malocclusion there are significant differences in LsL , LiL , lower lip angle of inclination , mentolabial sulcus angle , H angle , upper lower lip angle , Ns-Sn-Ls . For class III malocclusion the value of LsL is shoter than class II malocclusion , but the value of LiL is longer than class II malocclusion . The value of lower lip angle of inclination , mentolabial sulcus angle , upper lower lip angle is bigger than class II malocclusion .

安氏Ⅱ类错合患者与安氏Ⅲ类错合患者相比，在上唇长、下唇长、上唇倾角、下唇倾角、颏唇沟角、H角、上下唇角和软组织轮廓这些指标有显著性差异；安氏Ⅱ类错合患者的上唇长比安氏Ⅲ类错合患者的长、安氏Ⅱ类错合患者的下唇长比安氏Ⅲ类错合患者的短；安氏Ⅱ类错合患者的上唇倾角和H角比安氏Ⅲ类错合患者的大，安氏Ⅱ类错合患者的下唇倾角、颏唇沟角和上下唇角比安氏Ⅲ类错合患者的小。

In this study, we use Computer Aided Diagnosis Axiogragh recorded condylar movement of normal occlusion and Angle class two division one subdivision malocclusion with mandibular retrusion every twenty-five during mandible open and close, protrusion and retrusion, and medio-free movement. Then we analysis the deference in order to find out the characteristic of condylar movement of Angle class two division one subdivision malocclusion with mandibular retrusion and the change regularity among befor and after functional appliance treatment.

本研究以正常牙合和下颌后缩型安氏Ⅱ类1分类错牙合各25名为研究对象，采用髁突运动轨迹轴图描记仪(Computer Aided Diagnosis Axiogragh)记录其下颌在开闭口、前伸后退和侧方运动时髁突的运动情况，对比分析下颌后缩型安氏Ⅱ类1分类错牙合的髁突运动轨迹特征及其功能矫治前后髁突运动轨迹的变化。

Methods The characteristics of soft and hard tissues of 15 patients were analyzed by studying lateral cephalometric radiographs and plaster model,then the mechanism of malocclusion was probed and the scheme of treatment was formulated,the malocclusion was treated by edgewise appliance after extracting bilateral maxillary first bicuspids.

15名患者通过头颅定位侧位片与记存模型，分析硬组织指标、软组织面型特征，探讨错牙合机制，制定矫治方案，减数拔除双侧上颌第一双尖牙齿，采用方丝弓矫治器进行矫治。

Methods: 48 patients with Angle's Class II,division 2 malocclusion, 60 patients with Angle's Class II,division 1 malocclusion, as well as 15 patients with high-angle and 15 patients with low-angle facial skeletal type in Angle's Class II,division 1 malocclusion were separately compared with 50 patients with Angle's Class I who had normal profile by cephalometrics .

分别选取48例安氏II类2分类错患者、60例安氏II类1分类错患者以及各15例典型安氏II类1分类高低角骨面型患者为研究组，以选取的50例安氏I类正常面型患者为对照组。采用反映面骨关系的一般性测量项目与作者针对唇齿关系设计的测量项目进行比较分析。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。