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mandibular premolar
相关语句
  下颌前磨牙
     Three-dimensional finite element analysis the stress in the mandibular premolar
     下颌前磨牙的三维有限元应力分析
短句来源
     The frequency of mandible molar region involvement in OKC was the highest (55%), and that of mandibular premolar region involvement was the second highest (41%);
     OKC以下颌磨牙区发生率最高 ( 5 5 % ) ,其次为下颌前磨牙区( 4 1% ) ;
短句来源
     Combining spiral CT(SCT) scanning technology, digital image transfer and transcription, with three-dimensional finite element method (3-D FEM), a satisfactory 3-D FE models of the mandibular premolar and molar with biomechanical property is constructed , a research on the features of stress distribution in the normal and wearing teeth under different conditions is conducted from the biomechanical point view.
     本文采用螺旋CT扫描及三维影像重建技术与三维有限元应力分析方法(Three-dimensional finiteelement method,3-DFEM)相结合,建立了下颌前磨牙及磨牙磨耗前后的三维有限元模型,研究了不同载荷下牙体组织的应力变化及分布规律,对其与牙体硬组织损伤的关系进行了探讨。
短句来源
     1. Development of the three-dimnsional finite element modelThe purpose of this part is to construct 3-D FE model ofthe mandibular premolar by means of SCT scanning technology,digital image transfer and transcription, 3-D FEM in order toprovide the model basis for the biomechanical study in themandibular premolar.
     本研究分三部分:第一部分 下颌前磨牙的三维有限元模型的建立本研究利用头面部螺旋CT扫描、数字影像传输与转录以及自编程序和 ANSYS 软件相结合的方法,建立正常下颌前磨牙的三维有限元模型,为其生物力学研究提供模型基础。
短句来源
     3. Three-dimensional finite element analysis of premolar at various degrees of attritionThe purpose of this study was to determine the locations of stress concentrations in mandibular premolar and severe attrition.
     第三部分前磨牙不同磨耗程度的三维有限元应力分析本研究的目的是研究不同载荷下健康下颌前磨牙与磨车医进修学院硕士学位论义耗后牙体组织的应力变化及分布规律,比较应力在二者牙体组织中分布的不同,并与磨耗牙牙体组织应力分布进行比较,从生物力学角度为前磨牙及磨牙临床易患疾病提供理论依据。
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  “mandibular premolar”译为未确定词的双语例句
     Both sides of the mandibular premolar were extracted from 6native male mongrel dogs weighted 15kg to 20kg.
     动物实验采用西安地区杂种犬6只,雄性,体重15kg~20kg。
短句来源
     X-ray image showed that after the equipment of the distractor, there was a little space between bone transporter and base bone and the first mandibular premolar was in the bone transporter.
     X线观察表明DO成骨是一个渐进性的骨生成的过程。 牵引器安装即刻,骨升段与骨基部间有一微小间隙,下颌第一前磨牙牙根位于骨升段内。
短句来源
     While in the mandibular premolar and molar teeth, 35.7 % had clinical analgesia.
     下颌后牙牙髓麻醉完全及良好率为 35 .7% ;
短句来源
     Methods Three types of dental implants were implanted in the mandibular premolar and the first molar region of five dogs by using immediate implantation (just after extraction) in the functional state. The interfaces between implants and bones were studied by X-ray, LM and SEM, respectively at 2, 4, 8, 12 and 24 weeks after implantation.
     方法 选择 3种不同种植体采用即刻拔牙后植入 5只犬的下颌两个前磨牙及第一磨牙的牙槽窝内 ,分别于术后 2、4、8、12、2 4周取出标本 ,作X线、光镜、扫描电镜观察。
短句来源
     Methods\ 11 patients were treated with therapeutic complete denture, of which the maxillary premolars and molars were artificial ceramic teeth and mandibular premolar and molar region was just like a splint.
     方法 让 11例有不良颌位的无牙颌患者戴用笔者制作的一种上颌后牙为瓷人工牙 ,下颌后牙区似导板的治疗性全口义齿。
短句来源
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  相似匹配句对
     Three-dimensional finite element analysis the stress in the mandibular premolar
     下颌前磨牙的三维有限元应力分析
短句来源
     AIM: To investigate the histological effects of first premolar loss on mandibular condylar cartilage.
     目的 :研究前磨牙缺失对下颌骨髁突软骨的组织学影响 .
短句来源
     The treatment of mandibular tumors
     下颌骨肿瘤的治疗
短句来源
     Microanatomy study of mandibular osteometry
     下颌骨截骨的显微解剖学研究
短句来源
     AN ANTHRACOTHERE LOWER PREMOLAR FROM LIAONING
     记辽宁早第三纪一哺乳动物化石
短句来源
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  mandibular premolar
Two cases of extreme mandibular premolar rotation in deer are reported.
      
Often these lesions are found in young adults, especially in the mandibular premolar and molar region.
      
It is most frequently encountered in the mandibular premolar region in adult men over 40 years.
      
Figure 7-3 Effect of intrapulp pressure by application of cold ethyl chloride spray to anesthetized mandibular premolar in a 13-year-old boy.
      


Three types of dental implants were implanted in the mandibular premolar and the first molar region of five beagle dogs by using immediate implantation (just after ex-traction) and postponed implantation (3 months after extraction) in the semi-function state. The interfaces between implants and bones were studied by x-ray, LM and SEM respectively at week 2,4,8,12 and 24 after implantation. The results showed that osseointegrations were finished after 3 months. Occlusion loading determined bone qualities...

Three types of dental implants were implanted in the mandibular premolar and the first molar region of five beagle dogs by using immediate implantation (just after ex-traction) and postponed implantation (3 months after extraction) in the semi-function state. The interfaces between implants and bones were studied by x-ray, LM and SEM respectively at week 2,4,8,12 and 24 after implantation. The results showed that osseointegrations were finished after 3 months. Occlusion loading determined bone qualities and directions of wovenbone. We found that osseointegration showed no significant difference in the same dogs and in all implants after 8 weeks.

选择3种不同种植体采用即刻和延期两种方式植入5只狗的下颌前磨牙及第一磨牙区内,呈半负荷状态,分别于术后 2.4.6.8.12.24周取出标本作X线.LM SEM观察,结果显示:3个月时所有种植体均已达到完善骨整合,成骨量和骨小梁排列方向与(牙合)力负荷一致,且在同一机体上,骨整合无显著性差异,不同种值体之间8周时骨整合己无差异.

The purpose of this study was to examine the microvascular architecture of dog's periodontal ligament (PDL) and its immediate response to horizontal orthodontic force. A force of 200 g was applied mesially to the mandibular premolar of a dog for 2 hours, the distal side served as the contrast side. Formalin ink was perfused into the carotid arteries bilaterlly through the cannulas. After perfusion the mandible was decalcified, celloidin embedded, serially sectioned and stained with eosin. The sections...

The purpose of this study was to examine the microvascular architecture of dog's periodontal ligament (PDL) and its immediate response to horizontal orthodontic force. A force of 200 g was applied mesially to the mandibular premolar of a dog for 2 hours, the distal side served as the contrast side. Formalin ink was perfused into the carotid arteries bilaterlly through the cannulas. After perfusion the mandible was decalcified, celloidin embedded, serially sectioned and stained with eosin. The sections were then observed by light microscope and analyzed by image analyzer. Vascular corrosion casts were prepared by the similar way with the formalin ink perfusion and examined by scanning electron microscope. The results showed: there were extensive interconnections among the PDL, dental pulp, gingiva, alveolus and the neighbour tooth PDL, which would benefit the maintenance of health and functions of the dental pulp and the periodontal tissues. Arterioles and venulae could be confirmed by the presence of characteristic differences of nuclear impressions in endothelial cell under the scanning electron microscope. The quantitative analysis showed that the tensioned PDL sites in the experimental group had a higher microvascular volume density than the corresponding sites in the contrast group, while the pressed PDL sites in the experimental group had a lower microvascular volume density than the corresponding sites in the contrast group. This should result from the hydraulic mechanism in the PDL.

将狗一侧下颌前磨牙施以200g近中水平向正畸力,作用时间为2h,另一侧作为对照组进行自身对照。分别将甲醛墨汁和树脂灌注液经双侧颈外动脉插管和下牙槽动脉插管灌入牙周膜血管。用光镜和实时图像分析仪观察分析墨汁切片,用扫描电镜观察牙周膜微血管铸型。结果显示,牙周膜微血管系统中有形态特殊的血管吻合支和毛细血管襻;在牙周膜与牙龈、牙髓、牙槽骨和邻牙牙周膜之间存在广泛的交通支,形成一个有机的牙周血运网络系统;一些微静脉在穿出Volkman's管前形成“储水池”样膨大结构。借助于扫描电镜,可以从微血管铸型上的血管内皮细胞核压迹的特征来判别微动脉和微静脉。定量分析结果显示实验组牵张区牙周膜微血管体密度大于对照组对应区;实验组受压区牙周膜微血管体密度小于对照组对应区

Objective: The absorption of the polysaccharide protein complex to the implant surface may be the first reaction between the implant and the surrounding tissue. So we observed the distribution and the relative amount of the polysaccharide protein complex and glycosyls in order to find out the possible functions and changing rules of these substances. Methods: 12 rabbits were selected according to the age, sex, weight, and health conditions. Bilateral mandibular premolar teeth of rabbits were extracted...

Objective: The absorption of the polysaccharide protein complex to the implant surface may be the first reaction between the implant and the surrounding tissue. So we observed the distribution and the relative amount of the polysaccharide protein complex and glycosyls in order to find out the possible functions and changing rules of these substances. Methods: 12 rabbits were selected according to the age, sex, weight, and health conditions. Bilateral mandibular premolar teeth of rabbits were extracted under abdomen anesthesia (2% glutababituratic acid), then l2 titanium implants were placed into the teeth extraction holes of one side and left the other side to be the control one. All of the implants were required to be placed 2mm below the alveolar crest, and tissue closure was achieved with mattress and interrupted single sutures. Antibiotic injections were given to the rabbits in the following 3 days. The animals were sacrificed at the end of l week, 4 weeks and 24 weeks. Tissue blocks (4mm×4mm×4mm) containing the titanium implants and the control ones were removed, then fixed with l0% formaldehyde for 2 weeks, and decalcified with 10% EDTA (pH7 0) for 8 weeks. Carefully removed the titanium implants, the tissue blocks were embedded into the paraffin wax, then the sections were obtained and stained using following methods. ①Alcian Blue Method: Alcian blue (pH2 5) staining displayed the acidic proteoglycans; Alcian blue (pH1.0) displayed the proteoglycans containing sulfonyl; Alcian blue/periodix acid shiff staining demonstrated the acidic and neutral proteoglycans respectively. Alcian blue MgCl\-2 with different ionic concentration identified the different kinds of proteoglycans. ②Lectin Method: 5 kinds of lectins were used to locate 5 kinds of glycosyls. 2 5 μg/ml ConA located the glucose; 10μg/ml PNA located the galactose; 10μg/ml WGA located the N acetylglucosamine; 25μg/ml PHA E located N acetylgalactosamine, 10μg/ml WPL loacted the fucose. Results: high level of proteoglycans and glycosyls were observed in the peri implant connective tissue during all phases of the experiment. It was also observed that polysaccharide protein complex and glycosyls reached a high level in new bone matrix as well as osteoblasts. Conclusion: Polysaccharide protein complex and glycosyls do play an impor \ \ tant role in the implant bone attachment, and titanium compatibility and may be closely related to the bone metabolic activity.

目的 :研究钛种植体周结缔组织中多糖 -蛋白复合物在骨愈合过程中的变化规律及可能的作用机制。方法 :采用爱尔蓝及生物素标记的植物血凝素方法对兔下颌钛种植体周围组织中的多糖 -蛋白复合物及糖基进行观察。结果 :钛种植体周结缔组织膜、新生骨基质及成骨细胞中此物质的含量较高。结论 :多糖 -蛋白复合物在钛种植体形成骨附着及维持钛的生物相容性方面可能具有重要作用 ,并推测其与骨代谢活性密切相关。

 
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