查询词典 malocclusion

PURPOSE: To evaluate the role of total maxilla setback by Le Fort Ⅰosteotomy for correction of maxillary prognathism with skeletal Class Ⅱ malocclusion.

目的：探讨Le Fort Ⅰ型骨切开(Le Fort Ⅰ osteotomy)上颌骨整体后退术在矫治骨性Ⅱ类上颌骨前突畸形中的价值。

Total maxilla setback by Le Fort Ⅰ osteotomy is an effective way to cure the patients of maxillary prognathism with skeletal Class Ⅱ malocclusion.

对于骨性Ⅱ类上颌骨前突畸形患者，Le Fort Ⅰ型骨切开上颌骨整体后退术是一种安全、合理、有效的正颌外科术式。

Objective To observe and evaluate the profile changes after maxillary protraction treatment for Class Ⅲ malocclusion.

目的 观察与评价上颌前方牵引矫治器矫治骨性Ⅲ类错后软组织侧貌的变化。

The obvious skeletal change can be achieved with the mandibular protraction applicance treatment in early class Ⅱ malocclusion.

下颌前伸矫治器治疗早期Angle二类错牙合可取得明显的骨骼改变。

Here we present a case of 21 year-old male who suffered from recurrent swelling in left side of mandible which had received surgery for ossifying fibroma in another hospital when he was 19 years old. Obvious facial asymmetry was noted but no sensory dysfunctions were detected. The lesion showed well-demarcated, multilocular radiolucency but radiopacity centrally. We applied segmental resection via extra-oral approach and reconstructed with anterior iliac crest bone graft. After removal of MMF in six week, the wound healed well and joint function was good without malocclusion. After follow-up of one year, no recurrences were noted.

本病例为－21岁之男性，在19岁时因为左下颚骨角区肿大在某医院接受外科手术处理，术后病理报告为骨化纤维瘤，因为复发的肿胀而来本院寻求治疗，临床检查并无疼痛及下唇区感觉异常的问题，放射线影像为周界清晰，多腔室放射透过性合并中央放射不透过性之不规则小块，手术方式为从口外颚下切线，做下颚骨片段式切除，并以肠骨脊海绵骨移植修补骨缺损加以颚间固定六周，术后伤口恢复及愈合良好，颚骨关系稳定无咬合异常的情况，无张口受限的问题。

Objective:To investigate the effects of extraction to the morphology of symphysis and the relationship between lower incisors retraction and the changes of the symphysis by evaluating the cephalograms of patients with Angle Class II Division 1 malocclusion.,in order to provide a reference to clinical treatment.

目的： 通过对安氏Ⅱ~1类错拔牙矫治前后的X线头影测量分析，观察矫治前后颏部形态的变化，并探讨下切牙内收量与颏部厚度和倾斜度变化之间的相关关系，以期为临床矫治设计提供一定的参考。

objective the purpose of this study was to summarize our experience of the application of internal rigid fixation with miniplate to treatment of mandibular fractures.methods a retrospective analyisis of clinical data of 67 cases,who had experienced the anatomic reduction and rigid fixation by using miniplate.with the help of maxillomandibular distraction pre operation and post operation and temporary maxillomandibular fixation during operation,the fracture bones were smoothly reduced and fixed.results clinical and radiographic examination showed that all cases gained good clinical results and precise anatomic alignment of fracture postoperatively without infection,malocclusion,bone malunion or other complications.conclusion mocortical miniplate fixation of the mandible is a reliable and effective techinique providing rigid fixation and an ideal modality for the treatment of mandibular fractures.combined with maxillomandibular fixation.

对67例下颌骨骨折患者的临床资料进行回顾总结，所有患者应用小型接骨板行坚固内固定治疗。其中7例颏部骨折，12例颏旁骨折，16例颏孔区骨折，9例体部多发性骨折，5例体部粉碎性骨折；18例合并其他部位骨折。所有患者术前经临床检查和影像学检查明确骨折的位置和骨折线的数目后，分段牙弓夹板结扎、颌间弹性牵引，使移位的骨折段逐渐复位；术中经口内切开复位、细钢丝颌间结扎、小型接骨板坚固内固定；术后行临床检查和影像学复查，必要时颌间弹性牵引7～10 d。结果所有患者手术切口ⅰ期愈合，治疗效果满意；临床检查所有患者牙合关系良好、面部对称；影像学复查证实骨折线对位良好。结论经口内切开小型接骨板坚固内固定辅以颌间固定治疗下颌骨骨折效果可靠，术后并发症少，是一种理想的手术方法。

Key words: Angle's Class II malocclusion; adolescency; craniofacial contour

安氏II类错牙合；青春期；面部骨轮廓

The basifacial soft tissue thickness is thicker than midface and facial superior part.Malocclusion facial soft tissue thickness difference concentrate on facial lower third .

颅面部软组织并非均匀覆盖在硬组织上的，颅面部软组织覆盖厚度在面部各个部位差别大，面下部软组织覆盖厚度比面中部和面上部厚。

Using the soft tissue analysis with the pre-and post cephalometric films to compare the changes in adult female with bimaxillary malocclusion.Results:the upper and lower projecting lip were reduced in 2.38mm and 2.22mm individually.

通过对双颌前突的成年女性正畸治疗前后的X-线头影测量片的软组织形态的比较分析，寻求影响唇的形态变化的临床因素。

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。