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mandibular distraction
相关语句
  下颌骨牵张
    Mandibular distraction osteogenesis:the histological analysis and expression of transforming growth factor (TGF β1)
    下颌骨牵张成骨的组织学观察及转化生长因子β1表达
短句来源
    The expression of TGF-β1 mRNA and BMP-2 mRNA during mandibular distraction osteogenesis in goat
    TGF-β1 mRNA与BMP-2 mRNA在羊下颌骨牵张成骨过程中的表达
短句来源
    Expreesion of TGF-β1 in mandibular distraction osteogenesis
    TGF-β1在下颌骨牵张成骨中的局部表达及作用的实验研究
短句来源
    Establishment of three-dimensional finite element model for mandibular distraction osteogenesis
    下颌骨牵张成骨三维有限元模型的建立
短句来源
    A New Rat Model for Mandibular Distraction Osteogenesis.
    大鼠下颌骨牵张成骨模型的改进
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  下颌牵张
    Callus Formation Enhanced by BMP-7 Gene Modified Autologous Bone Marrow MSCs in Rat Mandibular Distraction Osteogenesis
    BMP-7基因修饰的自体骨髓间充质干细胞促进大鼠下颌牵张成骨的实验研究
短句来源
    Expression of Transforming Growth Factor-beta 1 in Mandibular Distraction Osteogenesis
    转化生长因子β_1在下颌牵张成骨过程中的表达及意义
短句来源
    Effects of Locally Applied TGF-β_1 on Mandibular Distraction Osteogenesis in Rabbits.
    局部应用β_1转化生长因子对兔下颌牵张成骨的影响
短句来源
    Change of type Ⅲ collagen in condyle in mandibular distraction osteogenesis
    下颌牵张成骨中髁突软骨Ⅲ型胶原的变化
短句来源
    Temporospatial expressions of BMP and PDGF in the regenerative bone of rabbits during mandibular distraction osteogenesis
    BMP和PDGF在兔下颌牵张后新骨组织中的时空表达
短句来源
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  下颌骨牵引
    Conclusion Thesuitable rates of mandibular distraction osteogenesis should be limited between 0.5mm/d and 1.5mm/d.
    结论下颌骨牵引成骨术的速度宜控制在0.5-1.5mm/d 范围内;
    Influence of mandibular distraction osteogenesis on the ultrastructure of the inferior alveolar nerve
    下颌骨牵引成骨对下牙槽神经超微结构的影响
短句来源
    Experimental study of the influence of mandibular distraction osteogenesis on inferior alveolar nerve function
    下颌骨牵引成骨术对下牙槽神经功能影响的实验研究
短句来源
    The preliminary experimental study of mandibular distraction osteogenesis process and mechanism
    下颌骨牵引成骨过程及机理的实验研究
短句来源
    Experimental study of TGF-β1 in the mandibular distraction osteogenesis process
    转化生长因子β1在下颌骨牵引成骨过程中的作用
短句来源
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  “mandibular distraction”译为未确定词的双语例句
    Conclusion:0.8 mm/day may be the best distraction rate in mandibular distraction osteogenesis.
    结论:采用0.8mm/d的牵张速率进行牵张能最快促进新骨形成,提高成骨质量。
短句来源
    The Expression and Biologic Effect of BMP-2 and bFGF during Mandibular Distraction Osteogenesis
    BMP-2、bFGF在牵引成骨中的表达及意义
短句来源
    An experimental model for in-built curved mandibular distraction osteogenesis in goats
    用山羊建立下颌骨曲线牵张成骨实验动物模型
短句来源
    Influence of unilateral mandibular distraction osteogenesis on inferior alveolar nerve
    下颌骨单侧牵张成骨对下牙槽神经的影响
短句来源
    Effects of rhBMP-2 on mandibular distraction osteogenesis and the expression of eNOS in the new bone
    不同剂量rhBMP-2对DO和新骨表达eNOS的影响
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  mandibular distraction
Continuous mandibular distraction osteogenesis using superelastic shape memory alloy (SMA)
      
Mandibular distraction osteogenesis is a clinical procedure used for modifying the mandibular geometry when problems of dental overcrowding and arch shrinkage occur.
      
The Influence of Expansion Rates on Mandibular Distraction Osteogenesis: A Computational Analysis
      
The Effect of Pulsed Ultrasound on Mandibular Distraction
      
The aim of this study was to test the null hypothesis that there is no correlation between new bone formation during mandibular distraction osteogenesis and NOS expression in the trigeminal ganglion of rats.
      
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Objective To review the early results of lengthening of the mandible by distraction osteogenesis for the correction of micrognathia deformity and treatment of the obstructive sleep apnea syndrome (OSAS) simultaneously. Methods 5 cases with micrognathia deformity associated with OSAS resulted from unilateral/bilateral temporomandibular joint ankylosis had undergone mandibular distraction osteogenesis. In all of the patients intraoral device was employed. Cephalometric radiographs and polysomnograms were...

Objective To review the early results of lengthening of the mandible by distraction osteogenesis for the correction of micrognathia deformity and treatment of the obstructive sleep apnea syndrome (OSAS) simultaneously. Methods 5 cases with micrognathia deformity associated with OSAS resulted from unilateral/bilateral temporomandibular joint ankylosis had undergone mandibular distraction osteogenesis. In all of the patients intraoral device was employed. Cephalometric radiographs and polysomnograms were obtained preoperatively and postoperatively. Results The average distraction distance was 15.28 mm (range 8.5 mm to 24.4 mm). The micrognathia deformity was corrected effectively, at the mean time the incapacious pharyngeal airway was ameliorated. The patients' Apnea Index (AI)had been decreasing, SaO 2 during sleep had got to rise. Conclusions Compared with the traditional surgery for the micrognathia associated with OSAS, the technique of mandibular distraction osteogenesis has the advantages of avoiding bone grafting and donor side morbidity, expanding the surrounding soft tissue concurrently, reducing the extent of operation and stability of the treatment effects.

目的 分析评价下颌骨牵引延长技术治疗小下颌畸形伴阻塞性睡眠呼吸暂停综合征(obstructivesleepapneasyndrome,OSAS)后 ,患者上呼吸道、睡眠呼吸暂停指数及血氧的变化。方法对 5例小下颌畸形伴OSAS患者应用口内型牵引器行下颌骨牵引成骨延长下颌骨体、前伸下颌骨、扩大咽腔。结果  5例下颌骨体最大牵引幅度为 2 4 40mm ,最小牵引幅度 8 5 0mm。在小颌畸形得到明显改善的同时 ,患者咽腔扩大 ,睡眠呼吸暂停指数明显下降 ,血氧饱和度显著上升。最长随访时间 11个月 ,无复发。牵引过程中未出现牵引器松脱、未成骨或骨缝过早联合等现象。结论 与以往的小下颌畸形伴OSAS的手术治疗相比 ,下颌骨牵引延长术不但手术创伤小、操作简单、避免了植骨及由此带来的供、受区并发症 ,而且其下颌前移、咽腔扩大的效果更为明显且稳定。具有重要的应用及推广价值

Objective To study the application of intraoral distraction osteogenesis in correction of various dentofacial deformities Methods From 1997, 12 cases with various dentofacial deformities were corrected by using 6 kind of intraoral distractor 3 cases of them were the patients with cleft palate who have severe secondary maxillary hypoplasia 4 cases with hemifacial microsomia, 2 cases with micrognathia and 3 cases with partial mandibular defect The maxillae were elongated from 10 mm to 15 mm, the mandibles...

Objective To study the application of intraoral distraction osteogenesis in correction of various dentofacial deformities Methods From 1997, 12 cases with various dentofacial deformities were corrected by using 6 kind of intraoral distractor 3 cases of them were the patients with cleft palate who have severe secondary maxillary hypoplasia 4 cases with hemifacial microsomia, 2 cases with micrognathia and 3 cases with partial mandibular defect The maxillae were elongated from 10 mm to 15 mm, the mandibles were elongated from 15 mm to 25 mm, the vertical mandibular distraction was from 10 15 mm Results All cases were corrected satisfactorily and have no any complications In 1 case the distracor did not work during distraction and was replaced Another case the mandibular margin fractured after distraction, the rigid fixation was performed for it Conclusions The intraoral distraction osteogenesis provides a new method with many advantages for those dentofacial deformities that are difficult correct by using ordinary orthognathic surgery

目的 探讨口内入路的颌骨牵引成骨技术在牙颌面畸形矫治中的应用。方法 使用 6种不同类型的口内牵引器分别水平向延长上颌骨和下颌骨体 ,水平垂直双向延长下颌骨升支以及垂直向延长牙槽嵴 ,以矫正重度上颌后缩畸形、小下颌畸形、半侧颜面发育不全畸形以及颌骨缺损畸形等 ,共 12例。结果  12例不同类型的颌骨牵引成骨除 1例因牵引器故障 ,中途更换 ,另 1例发生下颌下缘骨折并发症外 ,无感染、成骨不良、骨不愈合及开等并发症 ,12例成骨及矫治效果均满意。结论 口内入路的颌骨牵引成骨技术是治疗诸多常规正颌外科手术难以满意矫治的疑难病例的有效方法 ,且安全简便 ,术后稳定性好 ,值得推广应用

Objective: To lengthen the mandible by made in China distraction devices, and observe the superstructure changes of the inferior alveolar nerves at different times after distraction. Methods: 16 rhesus monkeys were used, 10 were unilaterally distracted, 6 were bilaterally distracted, and totally 22 nerves were lengthened. The IANs on the unoperated side were used as control. The integrity of the IAN was reserved when the mandible angle osteotomy was done. After 5 days of latency period, the mandibles were...

Objective: To lengthen the mandible by made in China distraction devices, and observe the superstructure changes of the inferior alveolar nerves at different times after distraction. Methods: 16 rhesus monkeys were used, 10 were unilaterally distracted, 6 were bilaterally distracted, and totally 22 nerves were lengthened. The IANs on the unoperated side were used as control. The integrity of the IAN was reserved when the mandible angle osteotomy was done. After 5 days of latency period, the mandibles were distracted at the rate of 0.5 mm×2/day, totally 15 days. We obtained the mental nerve 0, 2, 4, 6 and 12weeks after distraction finished, made thin section, stained with lead citrate and uranyl acetate, and observed under transform electron microscope. Results: When distraction was completed, cell organs greatly increased in nerve axoplasm on the distraction side and had abnormal structure and arrangement. Myelin fragments, plenty of mitochondria and Golgi's bodies were seen in the cytoplasm of Schwann's cells. Myelin became loose, torn, and accumulated into balls. Aδ and C fibers had only slight changes, Aα fibers displayed more severe myelin disruption. After 2 weeks, the axoplasm pathological changes and myelin disruption were still obvious, but alleviated a little than immediately after distraction. 4 and 6 weeks after distraction, there were still many cell organs and swelling mitochondria in axoplasm; Schwann's cells were actively proliferating and forming new myelin, its nucleo plasmic ratio increased. Macrophages were active, and contained engulfed myelin fragments; plenty of lysosomes and mitochondria were in cytoplasm. 12 weeks after distraction, Aδ and C fibers recovered completely, except for some myelin loosening and myelin balls; Aα fibers were also recovered to nearly normal. Collagen fibers in the interstitium distributed evenly. Conclusion: The mandibular distraction osteogenesis has temporal deleterious effect on the IAN supermicroscope morphology, but it is little and reversible; along with the regeneration of nerve myelin and axon, the nerve structure can gradually rehabilitate to normal.

目的 :观察下颌骨牵引成骨术后不同时期下牙槽神经 (inferioralveolarnerve,IAN)超微结构的改变 ,探讨牵引成骨术对神经组织结构的影响。方法 :恒河猴 16只 ,10只行单侧牵引 ,6只行双侧牵引 ,共 2 2侧 ,未手术侧神经作为对照。截骨安放牵引器时均保留下牙槽血管神经束的完整 ,5d间歇期后 ,以每次 0 .5mm ,每日 2次的速度进行牵引 ,共 15d ,分别于牵引完成后 0、2、4、6、12周时取双侧下颌颏神经 ,制作超薄切片 ,透射电镜下观察对照及牵引侧IAN超微结构的变化。结果 :牵引完成时可见牵引侧轴浆内细胞器增多 ,其结构及排列紊乱 ;髓鞘松散、脱落形成髓球 ;Schwann细胞内含大量髓鞘残片。推测这是由于牵引速度超过了神经再生的速度 ,造成牵引侧IAN的退行性变。牵引后 2周神经病变减轻 ,4周后神经出现修复性变化 ,Schwann细胞明显增生 ,形成新的髓鞘。至牵引后 12周 ,牵引侧IAN超微结构基本恢复正常。结论 :下颌骨牵引成骨术可对IAN产生一定的损伤性影响 ,但这是暂时、可逆的 ,由于神经自身的再生和修复功能 ,远期神经形态结构可恢复正常。

 
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