牙弓

上颌扩弓是临床正畸常用的一种措施，用来矫治牙弓狭窄、V形牙弓、提供牙列间隙、激活上颌骨缝辅助上颌前牵引。

Maxilla expansion is usual measure that applied to correct arch constrict , nasal cave constrict , " V " arch shape , provide arch space and active maxillary suture for assisting anterior traction .

评价牙弓长度与宽度比，指标为⑤：（A-B）/（M2R-M2L）；

The length to width ratio of the dental arch by ⑤ A - B / M2R - M2L ;

下唇挡与twinblock联合矫治对下牙弓的影响

The study of effects on the mandibular arch resulted by the application of Mandibular Lip Bumper combined with Twin Block

结论临床上扩展AngleⅡ~1的后上牙弓宽度可能是协调上下牙弓形态的重要措施之一。

Conclusion : Expanding maxillary posterior arch width in Angle ⅱ 1 patients may be one of the important methods to harmonize upper and lower arch form .

牙弓长度的改变在模型和X线头颅侧位片的测量结果中，两者的正相关性有统计学意义（P0.05）。

Model and cephalometric X ray films result of changes in arch length had a positive correlation ( P0.05 ) .

结论：除了下颌前部牙弓宽度变窄外，严重深覆牙合型AngleⅡ2错牙合牙弓形态基本正常。

Conclusion : The dental arch form in the Angle ⅱ 2 deep-overbite patients might be characterized as normal except in the mandibular intercanine width dimension , which is reduced .

影像学方法是采用MicroCT、牙科CT、螺旋CT和曲面断层摄影等设备扫描牙齿或牙弓，在计算机上获取人牙的图像后进行测量。

Imaging methods is the use of Micro CT , CBCT , spiral CT and panoramic photography and other equipment scanning and measuring the teeth or dental arch .

男性腭盖高度大于女性（P0.05）。结论：牙冠宽度、高度、各段牙弓的宽度均为男性大于女性。

Conclusions : The width and height of crown the width and length of the dental arch , and the height of the palate in Male were larger than those female in female .

建立稳定、连续的上颌骨牙弓；上颌前庭沟及下睑缘联合入路治疗上颌骨LefortⅡ型骨折

Treatment of Maxillary Lefort II Fracture with Combined Approach of Vestibular Groove and Lower Palpebral Margin

方法选择牙弓拥挤量在4～8mm的患者，利用自行研制的双轨式磨牙远移器，推上、下颌第二磨牙向远中移位。

Methods We chose patients whose dental arch was crowded in 4-8mm , using this self-made appliance to make the second molars come to their expectant place .

目的：比较观察经上颌快速扩大（RME）矫治后，成人与儿童牙弓和腭弓形态的变化差异。

Objective : To study changes of dental and palatal arch forms between adults and children after rapid maxillary expansion ( RME ) .

自从1873年Tomes首次提出了口周力的概念以及牙弓内外肌压力平衡理论以来，至今已有一百多年的历史了。

It is more than one hundred years since Tomes initially put forward the concept of perioral muscle pressure and the Equilibrium Theory .

结论：摇椅弓在打开咬合整平Spee曲线的同时有引起牙弓长度及宽度变化的趋势。

Conclusion : The results reveal that rocking chair archwire could level the curve of Spee and has the tendency to change arch length and width at the same time .

目的：本研究采用Howes法评估牙弓骨量与牙量的协调性，探讨其在正畸临床诊断与矫治设计确定拔牙与非拔牙中的应用价值。

Objective To evaluate the relationship between the teeth and basal bone by Howes'method , and to investigate the clinical value of this method in orthodontic diagnoses and treatment .

在临床诊治过程中，确定拔牙方案时常需要全面考虑牙齿拥挤度、牙弓突度、Spee曲线曲度、Bolton指数、支抗磨牙前移程度、颌面部硬软组织结构以及患者的生长发育因素等。

In the clinical diagnosis and treatment process , final determine often requires comprehensive consideration of the crowded , protrusion , Spee curve , Bolton index , molar antedisplacement , maxillofacial tissue structure and growth factors of patients .

方法：依据BonwillHawley个体理想牙弓形态图绘制原理，用VISUALBASIC6.0编制计算机程序。

Methods : On the basis of drawing principle of Bonwill_Hawley individualized ideal arches , the computer program was written with Visual Basic version 6.0.Results : The new computer_aided drawing system of individualized ideal arches was based on Windows9X / NT .

上颌牙弓周径、上颌第一磨牙及第一双尖牙颊倾度有显著性增加（T1-T2），但有少量复发（T2-T3）。

The upper arch perimeter , the buccal inclination of upper first molars and first premolars were significantly increased ( T-T2 ) with some relapse ( T2-T3 ) .

铸造牙弓夹板在治疗颌骨骨折中的应用

Application of founding arch bar splint in treatment of maxillary fracture

结果不对称畸形上牙弓双侧狭窄；

Results Upper arch is narrower than normal in craniofacial asymmetry .

颜面不对称畸形牙弓特征的研究

A study on the dental arch characteristics of the craniofacial asymmetry

严重的低拥挤与正常上颌牙弓和鼻唇角。

Severe lower crowding with normal maxillary arch and nasolabial angle .

唇挡对儿童牙弓及下颌骨生长发育的影响

Effectiveness of lip bump on the arch and mandible growth of children

个体理想牙弓弓形计算机绘制系统的研制

A Study of Computer-aided Drawing System for Individualized Ideal Arches

关于上颌牙弓性别差异的研究

A study on sex difference of adult maxilla dental arch

磨牙区牙弓宽度差异无显著性。

No significant difference was found for the intermolar width .

托槽代替牙弓夹板治疗儿童颌骨骨折33例体会

Experience of Treatment of Children Jaw Fracture with Bracket Instead of Splint

牙弓长度计算机测量分析系统的建立

Establishment of Computerized Analysis System for the Arch Length Measurement

比较治疗前后牙弓宽度变化。

Change Pre and post treatment arch width was measured .

拔牙矫治对牙弓宽度及基骨宽度的影响

Effects of tooth extraction on dental arch width and alveolar bone width

牙弓后间隙与第二磨牙错合相关性分析

Study on the Relation between Posterior Arch Spaces and Second Molar Malocclusion