目的探讨上颌锥形侧切牙患者颌面形态发育特征。方法选取98例12~25岁的上颌锥形侧切牙患者作为研究对象,拍摄头颅侧位片,对其进行X线头影测量分析。结果 98例患者中,1颗锥形侧切56例占57.1%,2颗锥形侧切牙42例占42.9%。98例患者的矢状面型:安氏Ⅰ类面型40例占40.8%,Ⅱ类面型8例占8.2%,Ⅲ类面型50例占51.0%;垂直面型:高角型46例占46.9%,均角型20例占20.4%,低角型32例占32.7%。结论上颌锥形侧切牙患者矢状向主要表现为Ⅰ类和Ⅲ类面型;垂直向主要表现为均角型和低角型面型,颌面形态特征表现为上颌骨发育不足,下颌骨发育过度,面中部软组织凹陷。

Objective To analyze the characteristics of maxillofacial morphology in patients with peg-shaped upper lateral incisors .Methods Ninety-eight patients with peg-shaped upper lateral incisors aged 12-25 years old were enrolled in the study .The lateral cephalograms were taken for a data analysis .Results Among these 98 cases,56 had one peg-shaped upper lateral incisor (57.1%),42 had two(42.9%).The sagittal skeletal patterns were skeletal ClassⅠ(n=40, 40.8%),skeletal ClassⅡ(n=8,8.2%) and skeletal Class Ⅲ(n=50,51.0%).The vertical skeletal patterns were high vertical type (n=46,46.9%),average vertical type (n=20,20.4%) and low vertical type (n=32, 32 .7%) .Conclusion Patients with peg-shaped upper lateral incisors mainly show Class ⅠandⅢskeletal pattern , vertical skeletal pattern of average and low vertical type with maxillary hypoplasia ,mandibular hyperplasia and midfacial deformity.

通过对明清凳类家具座面形态的归类和分析,采用个案分析法和归纳法,探寻明清凳类家具在座面形态和装饰元素方面的选择和使用方法,为我国传统家具设计提供借鉴.

@@@@Through the classification and analysis of the seat surface morphology of chair and stool furniture in the Ming and Qing Dynasties and the selection of and methods for use of seat surface morphology and decorative elements of chair and stool furniture in the Ming and Qing Dynasties are explored, which provides ideas for traditional Chinese furniture design.

目的 通过锥体束CT(cone-beam computed tomographs,CBCT)研究不同垂直骨面型和不同矢状骨面型青少年正畸患者上气道的差异.方法 采集66例青少年患者的术前CBCT影像,平均年龄(12.74±1.75)岁.根据中国人正常(牙合)Steiner分析法按ANB角、SN-MP角分成Ⅰ类、Ⅱ类、Ⅲ类和高角、均角、低角组.用InvivoDental 5.1软件测量口咽部气道的体积、最小横截面面积和长度.单因素方差分析比较不同骨面型青少年正畸患者气道的差异.结果 1.不同矢状骨面型青少年患者中,骨性Ⅰ类、Ⅱ类、Ⅲ类患者气道体积分别为(14.83±13.46) cm3、(8.77±3.54) cm3、(17.23±4.85) cm3,最小横截面面积分别为(160.93±90.43) mm2、(103.81±50.65) mm2、(200.57±66.76) mm2,而气道长度分别为(52.37±5.82) mm、(56.15±7.51) mm、(52.27±5.23)mm,差异都有统计学意义(P＜0.05);2.不同垂直骨面型的青少年患者气道体积、长度及最小横截面积之间均无统计学差异(P＞0.05).结论 青少年患者气道形态与矢状骨面型相关,与垂直骨面型无明显相关.

Objective To investigate the upper airway differences among various sagittal and vertical skeletal facial patternsinadolescent orthodontic patients by cone-beam computed tomographs (CBCT).Methods 66malocclusion patients (mean age was (12.74 ± 1.75) years old) with pretreatment CBCT image data were selected.According to Steiner analysis of Chinese population,these patients were divided into different groups according to ANB angle (Class Ⅰ,Class Ⅱ,ClassⅢ) and SN-MP angle (High-angle,Average-angle,Low-angle).Pharyngeal airway volume,length and the minimum cross-section area of each patient upper airwaywere measured by InvivoDental 5.1 software.The results were analyzed by One-way ANOVA.Results In different sagittal skeletal pattern patients,the airway volume were (14.83±13.46) cm3 、(8.77±3.54) cm3 、(17.23±4.85) cm3,the minimum cross-section area were (160.93±90.43) mm2 、(103.81±50.65) mm2 、(200.57± 66.76) mm2,and the airway length were (52.37±5.82) mm、(56.15±7.5

目的：研究甘肃省青少年不同骨面型颏部软硬组织形态。方法：选择就诊于甘肃省人民医院口腔正畸科的患者，拍摄X线头颅定位侧位片。筛选下颌平面角F1-MP角位于22°～33°，年龄12～16岁的120例患者为研究对象。根据ANB角的大小将其分为3组：Ⅰ类骨面型：0°＜ANB＜5°；Ⅱ类骨面型：ANB＞5°；Ⅲ类骨面型：ANB＜0°，且Wits值＜0°。评价患者的颏部软硬组织形态。所有数据采用SPSS19.0统计软件进行统计学分析处理。结果：显示男女性别之间只有颏高度显示具有统计学意义，青少年期男性颏高度大于女性；对颏部其它软硬组织形态结构不构成显著性差异。结论：本文发现69.4%的人颏部形态表现为突出，30.6%的患者表现为垂直型。同时还发现，Ⅱ类患者的特点主要表现为上唇前突，下唇由于颏部颏唇沟的深度高于Ⅰ类和Ⅲ类。Ⅲ类患者特点主要表现颏唇沟浅，颏部长度比另外两组长，也说明Ⅲ类患者的颏部较Ⅰ类和Ⅱ类发育过度，Ⅱ类患者的颏部相对发育不足。

Objective To study the different facial types of adolescent in Gansu area of chin soft tissue morphology. Methods Selecting treatment in orthodontic Department of Gansu province people''s hospital patients as the research object, X- ray cephalogram, screening of mandibular plane angle angle F1- MP is located at 22o~33o,between the age12- 16 years old,in 120 cases of patients with no object of study. According to the ANB angle will be divided into three groups: type I skeletal pattern: 0oP 5o;class III skeletal pattern:ANBP<0 ,and the Wits value is less than 0. Evaluation of patients with chin soft tissue morphology.All data were statistically analyzed by using SPSS19.0 statistical software. Results The results showed between the genders only chin height display has statistical significance,adolescent male chin height greater than women;for other soft tissue chinmorphology does not constitute a significant difference. Conclusion This paper foundchin morphology in 69.4% for out

了解上颌锥形侧切牙患者颅颌面形态特征。方法:纳入113例12~28岁的上颌锥形侧切牙患者,对其进行X线头影测量分析。结果:113例患者的矢状面型构成比为:Ⅰ类40.71%、Ⅱ类9.73%、Ⅲ类49.56%;垂直面型构成比为:均角型41.59%,高角型18.58%,低角型39.82%。SNA、ANB、Ptm-A(mm)、U1-SN、L1-NB、UL-EP值减小(P0.05),SNB、PP-GoGn、SN-MP、Y轴、U1-L1、U1-NA、L1-MP、Z角增大(P0.05)。结论:多数上颌锥形侧切牙患者颅颌面形态特征表现为上颌后缩,下颌前突,面中部软组织凹陷。

Objective:To analyze the craniofacial morphology characeristics of patients with peg-shaped upper lateral incisors. Methods:1 13 patients,aged 12 ~28 years,with peg-shaped upper lateral incisors were included,lateral cephalograms were taken and analyzed cephalometrically.Data were statistically analysed.Results:The sagittal facial patterns were skeletal Class Ⅰ(40.71%),skeletal Class Ⅱ(9.73%)and skeletal Class Ⅲ(49.56%).The vertical skeletal patterns were average vertical type (41.59%),high vertical type(18.58%)and low vertical type(39.82%).SNA,ANB,Ptm-A(mm),U1-SN,L1-NB,UL-EP were smaller(P<0.05)and SNB,PP-GoGn,SN-MP,Y axis,U1-L1,U1-NA,L1-MP and Z angles were increased(P<0.05).Conclu-sion:Patients with peg-shaped upper lateral incisors show Class Ⅲ skeletal pattern with maxillary retrognathia and mandibular prog-nathism.