protraction

In the protraction movement , there was no significant difference in activities between the oral respiration group and the nasal breathing group ( P > 0.05 ) .

前伸运动：均未见显著性差异（P>0.05）；

Objective : To investigate the effectiveness of the mandibular Protraction appliance in the treatment of class ⅱ malocclusion .

目的：了解下颌前伸矫治器（MandibularProtractionAppliance，MPA）对AngleⅡ类错牙合的治疗效果。

Design and Protraction for Oil Well Structure Drawing Based on Visual Basic

基于vb的油井结构图设计与绘制

The Research and Automatic Protraction of Flux Tendency Line Based on GIS Technology

基于GIS的流量倾向线的自动绘制与研究

Automatization Protraction of Mine Main Fan Characteristic Curve Based on Origin

基于Origin矿井主要通风机性能特性曲线的绘制

Results The new anchorage implants were stable almost in every protraction experimental study .

结果在所有实验中支抗种植体稳定性良好。

Neural net based Modeling Used in the Protraction Measurement for Thermal Expansion Die bolt

神经网络建模在热膨胀螺栓形变测量中的应用

In addition , the most practical representation and protraction methods will be studied .

同时，探索出最适合箱包设计的表现与绘制方法。

Establishment of an experimental animal model of maxillary protraction and cephalometric analysis

上颌前牵引动物模型建立与头影测量分析

The experimental study of maxillary protraction through bone suture expansion in animals

上颌骨复合体骨缝牵张的动物实验研究

Further protraction of the discussion will not achieve anything .

继续讨论下去并不能解决任何问题。

Studies on the Mandibular Stress of People in the Position of Mandible Protraction

人体下颌骨前伸后的骨应力研究

Protraction of manager performance is the key factor to the long-range development of state-owned industries .

经营者行为的长期化是国有企业长远发展的关键因素。

Mandibular Protraction Appliance in the Treatment of Angle Class ⅱ Malocclusion

下颌前伸矫治器矫治安氏Ⅱ类错合的临床研究

Preparation and clinical application of mandibular protraction appliance

下颌前方牵引器制作与应用

For each patient , maxillary protraction was taken without maxillary expansion .

每例患者均未扩弓，只采用前方牵引矫治。

Three-dimensional finite element method study on the maxillary protraction : the direction of the protraction

前牵引上颌的三维有限元研究：前牵引方向的探讨

On Protraction of Manager Performance in State-Owned Industries

论国有企业经营者行为的长期化

Application skills of AutoCAD in engineering geologic protraction

AutoCAD在工程地质制图中的一些应用技巧

In main stress trace protraction , based on the character of main stress trace , propose an automatic method .

研究了一种简便快速的主应力迹线自动化绘制方法。

Biomechanical study on 3-dimensional finite element model of maxillary protraction and the palate expansion

上颌前牵引联合腭部扩弓的三维有限元生物力学研究

Objective To study the effects of ages on combined RME and maxillary protraction therapy .

目的研究年龄对于前方牵引联合快速扩弓矫治效果的影响。

Result : The profile improved slowly more than half a year in maxillary protraction treated group .

结果：前方牵引后侧貌改善较慢，一般需半年以上。

A preliminary study about the timing of maxillary protraction therapy for Angle ⅲ malocclusion

AngleⅢ患者上颌前牵引矫治时机的初步探讨

Relationship between maxillary protraction treatment and changes of nasal profile in children of Chinese Han-nationality

汉族儿童上颌前方牵引与其鼻部侧面形态改变的关系

The clinical investigation of the maxillary protraction in treatment of children Angle ⅲ anterior crossbite

前方牵引矫治儿童安氏Ⅲ类错牙合的临床研究

Treatment of maxillary retrusion using maxillary protraction combined with rapid palatal expansion in different age

扩弓联合前牵引治疗不同年龄段的上颌发育不足

Influence of simulating maxillary protraction on the position of maxilla in SD rats

模拟上颌前牵引对SD大鼠颅面部生长发育的影响

Biomechanical study on 3-dimensional finite element model of simulated maxillary protraction after maxillary fissure repair

模拟修复上颌骨裂隙后前牵引受力的三维有限元生物力学研究

To investigate the therapeutic effects of maxillary expansion and protraction in the primary dentition .

探讨在乳牙期利用固定扩弓矫治器前牵引的临床效果。