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mandibular distraction
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  下颌骨牵张
     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
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     Expressions of BMP-2,TGF-β1 in periodontal tissue of dog's fourth premolar germ during mandibular distraction osteogenesis
     犬下颌骨牵张成骨后恒牙胚牙周组织TGF-β1、BMP-2的表达
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     Objective\ To observe the expression patterns of matrix metalloproteinase_3 and its inhibitor, tissue inhibitor metalloproteinases (TIMP)_1, in remodeling phase of mandibular distraction osteogenesis.
     目的 研究基质金属蛋白酶_3(MMP_3)和金属蛋白酶组织抑制因子_1(TIMP_1)在下颌骨牵张后形成的新骨组织中的定位表达。
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
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     Expression of c-fos,OPG,OPGL in rabbit mandibular distraction osteogenesis zone
     兔下颌骨牵张成骨组织中c-fos和OPG及OPGL的表达
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  下颌牵张
     Objective: To study the enhancement effect of recombinant human bone morphogenetic protein-2 (rhBMP-2) on mandibular distraction osteogenesis in rabbits.
     目的:研究重组人骨形成蛋白2(recombinant human bone morphogenetic protein2,rhBMP2)对兔下颌牵张成骨的作用。
短句来源
     Study of the Expression of Integrin α_Vβ_3 in Mandibular Distraction Osteogenesis
     整合素α_Vβ_3在下颌牵张成骨过程中表达的实验研究
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     TGF-β1 Expression and Histological Changes in Condyle in Response to Bilateral Mandibular Distraction Osteogenesis of Canine
     狗双侧下颌牵张成骨中髁状突的组织结构变化和TGF-β1的表达
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     Bone Morphogenetic Proteins2 Gene Therapy for Mandibular Distraction Osteogenesis in Rabbits
     腺病毒介导的人骨形成蛋白2(Ad-hBMP2)基因转染促进兔下颌牵张成骨(DO)的实验研究
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     Establishment of a three-dimensional finite element model of human mandibular distraction osteogenesis
     人下颌牵张成骨三维有限元模型的建立
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  下颌骨牵引
     Conclusion The suitable rates of mandibular distraction osteogenesis should be limited between 0.5 mm/d and 1.5 mm/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;
短句来源
     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;
     Objective To examine the expression of activin A (ACT A) and transforming growth factor|β1 (TGF|β 1)during mandibular lengthening and elucidate the difference between the role of ACT A and TGF|β 1 during mandibular distraction osteogenesis.
     目的 检测下颌骨牵引过程中激活素A(ACTA)及转化生长因子 β1 (TGF β1 )的表达情况 ,了解ACTA、TGFβ1 在下颌牵引成骨中作用的异同点。
短句来源
     Experimental Study of TGFβ1 in the Mandibular Distraction Osteogenesis Process
     TGFβ1在下颌骨牵引成骨过程中的作用
     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
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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
     Conclusion\ MMP_3 and TIMP_1 appear to play important roles in the remodeling of new bone created by mandibular distraction osteogenesis.
     结论 MMP_3及TIMP_1可协同调节胞外基质的降解来影响牵张成骨的改建过程
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     The Research on Histology and the Expression of c-fos, OPG, OPGL in the Mandibular Distraction Osteogenesis Zone
     牵张成骨修复下颌骨缺损的组织学及c-fos、OPG、OPGL表达的研究
短句来源
     Methods: An animal model of bilateral mandibular distraction osteogenesis in rabbits was established. RhBMP-2 adhering to absorbable collagen sponge (ACS) was implanted to the right side of the mandible, while the left side was implanted with ACS as control.
     方法:建立兔下颌双侧牵张成骨动物模型,于下颌右侧骨断端间植入含有rhBMP2的可吸收胶原海绵(absorbable collagen sponge,ACS),左侧单纯应用ACS作为对照。
短句来源
     Results:The regenerated bone resulted from mandibular distraction at rates of 0.5mm/d and 1mm/d showed eariler bone formation and better mineralization than those distracted at a rate of 2mm/d.
     结果 :以 0 .5mm/d和1mm/d牵张下颌骨后形成的新骨质量要好于 2mm/d。
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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 establish the animal models of mandibular distraction osteogenesis in rabbits and study its osteogenetic mechanism.Methods The right mandibles just anterior to the first molars of 12 rabbits were performed osteotomies, and the mandibles were positioned with distractors. The left mandibles were control group without operation. After 1 week, the distractors were streched 0.9 mm every day for 10 days progressively. One day, 2,4,8 weeks after distraction, the mandibles were studied with...

Objective To establish the animal models of mandibular distraction osteogenesis in rabbits and study its osteogenetic mechanism.Methods The right mandibles just anterior to the first molars of 12 rabbits were performed osteotomies, and the mandibles were positioned with distractors. The left mandibles were control group without operation. After 1 week, the distractors were streched 0.9 mm every day for 10 days progressively. One day, 2,4,8 weeks after distraction, the mandibles were studied with gross measurement, X ray, and histological examination.Results The right mandible were lengthened 8.3 mm on average without bone nonunion and deformity healing.It was observed that the gaps between the distracted bone edges were first occupied by fibrous tissue. Two weeks after distraction. it was found that the gaps were bridged by callus in X ray, the new bone and the normal bone could not be differentiated clearly after 8 weeks. In histological sections, there were collagen bundles in early distraction, then those collagen bundles were calcificated and become trabeculaes. No Cartilage was found during distraction.Conclusion It suggests that the rabbit mandible can be lengenthed by distraction osteogenesis, and the new bone is formed by intramembranous ossification.

目的 建立兔下颌骨牵拉成骨动物模型,研究了解颅面部牵拉骨生成的规律。方法 将12 只新西兰大白兔右侧下颌骨第一磨牙前完全截骨后用牵拉器固定,左侧不做手术为对照侧。1周后以每天一次0.9 m m 的速度逐步牵拉,连续10 天。牵拉完成后1 天,2、4 和8 周每组处死3只兔,取下完整下颌骨进行大体测量,X线摄片,新骨组织学观察。结果 12只兔右侧下颌骨平均延长8.3 m m ,与对照侧比较有显著性差异(P< 0.01),无骨不连及畸形愈合。X线摄片发现,延长完成后2周牵拉间隙已被骨痂桥接,8 周时,X线片上很难分辨新骨和正常骨。组织学观察牵拉早期即有胶原束形成,随后钙化成骨,未发现软骨中介体。结论 运用牵拉成骨技术可成功地延长兔下颌骨,无骨不连和畸形愈合等并发症,新骨以膜内成骨方式生成

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

 
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