mandibular arch

Conclusion : Bar should be designed according to the alveolar ridge and maxillary or mandibular arch of the patients and the principle of Spiekermann 's design .

结论：应根据患者的牙槽嵴和颌弓条件分别选用三类不同的杆设计形式；

Objective To discuss the effect of the shape of mandibular arch on uprightness distortion ratio in computed orthopantomography .

目的探讨颌弓形态对曲面体层摄影下颌骨垂直失真率的影响。

Tooth development in vitro cultured mouse mandibular arch

小鼠牙胚发育在下颌弓培养模型中的动态观察

Objective : To study the effect of the improved maxillary bite plate on the width of mandibular arch .

目的探讨戴用上颌全腭导板对下颌牙列牙弓宽度的影响。

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

下唇挡与twinblock联合矫治对下牙弓的影响

Conclusions The net increase in maxillary intercanine width during treatment was more stable than that of mandibular arch .

结论治疗后上颌尖牙宽度净增加量较下颌稳定；

The width of mandibular arch in the treated subjects increased more than that in the controls ( P < 0.001 ) .

与同期对照组下颌牙弓宽度的改变相比，也具有显著差异（P<0.001）。

Objective When clinical correction of the narrowing of mandibular arch , the existing protocol was correcting the teeth axis of mandible .

目的临床矫治上下颌骨宽度不调-下颌弓狭窄的病例时，既往采用的方法是正畸治疗调整下颌牙列内牙轴的方向。

Conclusion The lip bumper can promote mandibular arch development and increase lower arch perimeter in the mixed and . early permanent dentition .

结论在儿童颌面部生长发育期间，下颌唇挡有助于增加下颌牙弓的长度与宽度，对治疗替牙期及恒牙初期下颌牙弓轻度或中度拥挤产生积极作用。

Objective To evaluate the effects of lip bumper therapy on the changes of the mandibular arch in the mixed and early permanent dentition .

目的研究下颌唇挡对替牙期及恒牙初期儿童下颌牙弓及下颌骨生长发育的影响，探索用下颌唇挡早期矫治下颌牙列拥挤的作用机理。

Methods Three cases of patient with developmental narrowing of the mandibular arch , associate with retrognathia of mandible or protrusion of maxilla .

方法3例病人均为发育性下颌弓狭窄，同时伴有下颌后缩或上颌前凸畸形。

It will cause loss of the canine guidance , damage of the occlusion , and discoordination of the maxillary and mandibular arch forms .

阻生犬齿引起犬齿导引的丧失、合的损伤、下颚牙弓的不协调。

Objective To observe the effects of mandibular arch resulting from the application of Mandibular Lip Bumper combined with Twin Block to treat Class ⅱ division ⅰ malocclusion .

目的观察下唇挡与twinblock联合矫治Ⅱ类Ⅰ分类错（牙合）对下牙弓的影响。

The epithelium of the mandibular arch changed from monolayer to polylayer with accumulation of keratose in some arches .

下颌弓表面上皮由培养前的单层扁平上皮发育为为复层鳞状上皮，少部分下颌弓表面有角化物堆积。

The effect of the improved maxillary biteplate on the width of mandibular arch Conclusion The lip bumper could play an important role in the mandibular arch development and lower facial profile improvement in mixed and early permanent dentition .

上颌全腭导板对下颌牙弓宽度的影响研究结论在儿童颌面部生长发育高峰期，唇挡可有效促进下颌牙弓生长发育，改善面下部硬软组织侧貌形态。

Methods : 16 patients aged 13 ~ 16 years with Angle Class II or Class I malocclusion underwent the treatment by improved biteplate for 3 months , the width of mandibular arch between 66 and between 33 was measured after treatment .

方法选择16例安氏II类1分类和I类上前牙唇倾患者经戴用上颌全腭导板3个月后分别记录治疗前后下颌牙弓宽度的变化，并做统计学处理。

The expansion of mandibular arch crowding is not only reflected in the post-arch , but also embodied in the former arch , and accompanied by the tilting of the anterior lip when crowding cases were treated with Damon self-ligating system . 4 .

Damon自锁托槽技术对下颌牙列拥挤的扩弓作用不仅体现在后牙弓，而且还体现在前牙弓；并伴随有前牙的唇倾趋势。

Methods 30 cases ( 14 males and 16 females ) with mandibular arch crowding in the mixed and early permanent dentition were treated with shield lip bumper for 6 & 10 months . The cast measurement and cephalometric analysis were performed to evaluate the effects of lip bumper therapy .

方法选择替牙及恒牙初期下牙列拥挤患者30名（男14例、女16例），戴用下颌唇挡治疗6&10个月，进行治疗前后模型测量及X线头影测量分析。

Measurements of mandibular dental arch growth in children

儿童下牙弓发育的测量

Conclusion : This method was a part of series treatment of chilopalatognathus to restore the integrity of mandibular dental arch .

结论：牙槽突植骨术是唇腭裂序列治疗的一个组成部分，为恢复上腭牙弓完整性。

Objective Observe the clinical effect of removable lingual arch plus auxiliary spring for convenient dental ( especially mandibular ) arch expansion .

目的观察活动舌弓+再曲簧临床扩弓效果，寻找一种简便、有效，尤其对下颌牙弓更理想的扩弓方法。

Objective This study analysed the deviation between planned prosthetic trajectory ( PPT ) and residual bone trajectory ( RBT ) in different areas of the maxillary and mandibular dental arch .

目的测量颌骨不同区域修复设计要求的牙种植体植入方向（PPT）与颌骨骨量允许的植入方向（RBT）间的差异。

There were no relevant ties of the maxillary and the mandibular bony arch length with the anterior lower facial height ( ALFH ), the posterior lower facial height ( PLFH ) and the average height of both ( LFH ) respectively .

上颌基骨长和下颌基骨长分别与前下面高（ALFH）、后下面高（PLFH）和均高（LFH）间无相关关系。