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late mixed dentition
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  替牙晚期
     The effect of maxillary and mandibular lip bumper on teeth and dental arch in late mixed dentition
     上下颌唇挡对替牙晚期儿童牙合的影响
短句来源
     PURPOSE:To evaluate the effects of extraoral cervical traction on skeletal Class Ⅱ division 1 malocclusion of early or late mixed dentition and discuss the optimal treatment timing.
     目的:比较替牙早期及替牙晚期骨性安氏Ⅱ类1分类错行口外颈牵引治疗的疗效,探讨合适的矫治时机。
短句来源
     METHODS: The sample consisted of two groups of skeletal Class Ⅱ division 1 malocclusion. One group with 11 cases was treated started in early mixed dentition while the other with 15 cases in late mixed dentition.
     方法:样本包括11例替牙早期患者及15例替牙晚期患者,均为骨性安氏Ⅱ类1分类错牙合,ANB≥5°,分别予以口外颈牵引治疗。
短句来源
     CONCLUSIONS: The extraoral cervical traction might be more effective in late mixed dentition to restrain maxillary growth in the treatment of skeletal Class Ⅱ division 1 malocclusion.
     结论:在替牙晚期对骨性安氏Ⅱ类1分类错患者行口外颈牵引治疗较为合适,有利于恒牙期的二期矫正治疗。
短句来源
     PURPOSE: To study the effect of maxillary and mandibular lip bumper on tooth and dental arch in late mixed dentition.
     目的:研究上下颌唇挡同时应用对替牙晚期儿童牙牙合的影响。
短句来源
  “late mixed dentition”译为未确定词的双语例句
     Methods The observation group included 11 subjects in late mixed dentition or early permanent dentition,and the control group included 32 subjects in early mixed dentition.
     方法 以 11例 10~ 14岁骨性Ⅲ类错牙合患者为观察组 ,3 2例替牙早期骨性Ⅲ类错牙合患者为对照组。
短句来源
  相似匹配句对
     On Mixed Economy
     论混合经济
短句来源
     The late strength of mixed cement pastes increases some also.
     适当掺量的激发剂对复合体系的后期强度也有促进作用。
短句来源
     On the Mixed Powerdomain
     关于混合Domain的几个问题
短句来源
     The Late Upsurge
     迟来的热潮——关于中国油画艺术及其市场
短句来源
     The late alliance
     迟到的联盟
短句来源
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  late mixed dentition
In 16 per cent of the HG group, extractions were undertaken during the late mixed dentition period.
      


Objective The aim of this study was to investigate the changes of skeletal anterior crossbite in early stage after maxillary expansion and protraction therapy Methods 40 chinese children with skeletal anterior crossbite were divided into two groups: the control group received no orthodontic treatment and the experimental group received maxillary expansion and protraction The cephalometric analysis was used to evaluate the changes in both groups. Results In the experimental group, A point moved forward...

Objective The aim of this study was to investigate the changes of skeletal anterior crossbite in early stage after maxillary expansion and protraction therapy Methods 40 chinese children with skeletal anterior crossbite were divided into two groups: the control group received no orthodontic treatment and the experimental group received maxillary expansion and protraction The cephalometric analysis was used to evaluate the changes in both groups. Results In the experimental group, A point moved forward 3 5 mm (-1 75 mm in the control group). SNB, SNPg decreased and ANB, NP PA increased Protraction therapy to treat skeletal anterior crossbite in the middle and late stage of mixed dentition could influence craniofacial growth and development, such as accelerating forward growth of the maxilla, making mandible downward growth Conclusions Protraction therapy can achieve successful result in treatment of skeletal anterior crossbite in middle and late mixed dentition.

目的 评价早期前方牵引矫治骨性前牙反引起的牙颌面形态学变化及其对前牙反儿童牙颌面生长发育的影响。方法 挑选 40名年龄 8~ 11岁的骨性前牙反儿童 ,随机分为 2组 ,一组进行前方牵引矫治器治疗 ,另一组作对照观察。 2组儿童在治疗或观察期前后分别拍摄头颅侧位定位X线片 ,行X线片头影测量 ,以计算机进行统计分析。结果 治疗组儿童的A点平均前移 3 5mm(对照组为 - 1 75mm) ,代表下颌突度的SNB、SNPg角明显减小 ,代表上下颌间关系的测量项目ANB角、NA PA角明显增大。结论 在替牙中晚期应用前方牵引矫治器治疗 ,可刺激上颌骨前移、控制下颌骨的旋转及生长速度 ,使反患者的Ⅲ类面型得到明显改善

Objective The aim of this study is to investigate the clinical effects of combined protraction facemask and rapid maxillary expansion in the treatment of Class Ⅲ malocclusion in 11 children aged from 10 to 14 years.Methods The observation group included 11 subjects in late mixed dentition or early permanent dentition,and the control group included 32 subjects in early mixed dentition. Protraction facemask and rapid maxillary expansion device was used and the mean treatment time was...

Objective The aim of this study is to investigate the clinical effects of combined protraction facemask and rapid maxillary expansion in the treatment of Class Ⅲ malocclusion in 11 children aged from 10 to 14 years.Methods The observation group included 11 subjects in late mixed dentition or early permanent dentition,and the control group included 32 subjects in early mixed dentition. Protraction facemask and rapid maxillary expansion device was used and the mean treatment time was 6 months. Cephalometric radiographs were taken at the initiation of treatment (T1) and after 6 months of treatment(T2).In this way,(T2 T1) represented cephalometric changes after the treantment and cephalometric analysis based on a new basecranical reference system was used to compare the changes.Results All the subjects had the following changes: the maxilla moved forward, the mandible exhibited a downward and backward rotation and the forward growth was restricted. The overjet correction of the observation group was 5.3mm, 51% of the overjet correction was due to skeletal changes and 49% due to dental changes.9 cases obtained normal overjet and overbite and molar relationship. Conclusion The combination of protraction facemask and rapid maxillary expansion is helpful to the correction of Class Ⅲ malocclusion in children aged from 10 to 14 years.It can alleviate the degree of deformation,avoid surgery, and improve the relationship between hard and soft tissue.

目的 观察联合应用前方牵引和上颌快速扩弓治疗 10~ 14岁骨性安氏Ⅲ类错牙合患者的临床效果。方法 以 11例 10~ 14岁骨性Ⅲ类错牙合患者为观察组 ,3 2例替牙早期骨性Ⅲ类错牙合患者为对照组。两组均采用联合应用前方牵引和上颌快速扩弓装置治疗 ,平均治疗时间 6个月。治疗前后均拍摄头影侧位片 ,并采用一种新的头颅参照系统 ,对结果进行分析比较 ,评价治疗效果。结果 两组患者均发生上颌骨前移 ,下颌骨向下后旋转 ,向前生长受限。观察组前牙覆盖增加 5 .3mm ,骨性变化占 5 1% ,牙性变化占 4 9% ;其中 ,9例患者前牙达到正常覆牙合、覆盖关系 ,磨牙中性关系 ,2例患者前牙达到浅覆牙合、浅覆盖关系 ,后牙中性偏近中关系。结论 联合应用前方牵引和上颌快速扩弓治疗 10~ 14岁轻中度骨性反牙合患者有较好疗效 ,可减轻畸形程度 ,避免手术治疗 ,最大程度地改善患者的软硬组织关系

PURPOSE:To evaluate the effects of extraoral cervical traction on skeletal Class Ⅱ division 1 malocclusion of early or late mixed dentition and discuss the optimal treatment timing. METHODS: The sample consisted of two groups of skeletal Class Ⅱ division 1 malocclusion. One group with 11 cases was treated started in early mixed dentition while the other with 15 cases in late mixed dentition. All cases were treated with extraoral cervical traction headgear. Cephalometric analysis was conducted...

PURPOSE:To evaluate the effects of extraoral cervical traction on skeletal Class Ⅱ division 1 malocclusion of early or late mixed dentition and discuss the optimal treatment timing. METHODS: The sample consisted of two groups of skeletal Class Ⅱ division 1 malocclusion. One group with 11 cases was treated started in early mixed dentition while the other with 15 cases in late mixed dentition. All cases were treated with extraoral cervical traction headgear. Cephalometric analysis was conducted to evaluate the treatment effects. Student's t test was applied for statistical analysis. RESULTS: SNA, ANB and the length of maxilla (A-Ptm) were reduced and the inclination of maxillary incisor was decreased in both two groups. When comparing the two groups, it was found that the reduction of SNA was more notable, which means the inhibition of the maxilla was more evident in late mixed dentition. The difference was statistically significant(P<0.01). There was no significant difference on the distalization of the first upper molar between two groups(P<0.01). CONCLUSIONS: The extraoral cervical traction might be more effective in late mixed dentition to restrain maxillary growth in the treatment of skeletal Class Ⅱ division 1 malocclusion.

目的:比较替牙早期及替牙晚期骨性安氏Ⅱ类1分类错行口外颈牵引治疗的疗效,探讨合适的矫治时机。方法:样本包括11例替牙早期患者及15例替牙晚期患者,均为骨性安氏Ⅱ类1分类错牙合,ANB≥5°,分别予以口外颈牵引治疗。治疗前后摄取X线头颅侧位定位片,进行头影测量及统计学分析。2组治疗前后比较采用配对t检验,2组之间采用团体t检验。结果:2组上颌骨生长均受到了抑制,SNA角、上颌骨长度(A-Ptm)及ANB角均有减小。U1-SN角减小,上前牙前突得到改善。2组比较,替牙晚期组变化更明显,2组之间有显著性差异(P<0.01)。而上颌第1恒磨牙远移距离在2组间则无显著性差异(P<0.01)。结论:在替牙晚期对骨性安氏Ⅱ类1分类错患者行口外颈牵引治疗较为合适,有利于恒牙期的二期矫正治疗。

 
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