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caries     
相关语句
  龋病
    Streptococcus Mutans Reactive Oxygen Species Metabolism and Its Significance in Causing Dental Caries
    变形链球菌活性氧代谢及其对龋病发病的意义
短句来源
    A Survey of Dental Caries among 3263 Nursery Children and School Pupils in Yongxiu County
    永修县3263名幼托儿童和中小学生龋病发病情况调查报告
短句来源
    Survey on Incidence of Caries of Deciduous Dentition of 1077 Children in Zunyi City
    遵义市1077名乳牙儿童龋病发病情况调查
短句来源
    INVESTIGATION AND ANALYSIS OF THE REOCCLUSION AND THE CARIES OF THE FIRST MOLARS
    第一恒磨牙建与龋病的调查分析
短句来源
    An Analysis of Salivary Parameters Between Adults Without Caries and Adults with Serious Caries
    龋病患者的唾液参数分析
短句来源
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    Experimental Study on the Effect of the Reactive Oxygen Species Metabolism on the Streptococcus Mutans' Role in Causing Dental Caries
    活性氧代谢对变形链球菌致作用影响的实验研究
短句来源
    A comparative study on different tissue specimens in diagnosis of pulp diseases with caries
    不同组织标本诊断性牙髓病的比较
短句来源
    Ultrastructural Studies of Dark Zones in Natural Initial Enamel Caries
    初期釉质中暗带的超微结构研究
短句来源
    Proteolytic phenomenon in enamel caries
    牙釉质中的蛋白溶解现象
短句来源
    A study of parotid salivary proteins from caries free and caries active people by high performance li quid chromatography
    用高效液相法研究不同敏感人群的唾液蛋白成分
短句来源
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  龋齿
    A STUDY OF THE DENTAL CARIES PREVALENCE OF CHILDRENIN BEIJING,LESHAN,
    北京乐山香港地区和日本儿童龋齿流行病学研究
短句来源
    Trace Element Strontium and Caries
    微量元素锶与龋齿
短句来源
    An Epidemiological Survey of Dental Caries and Fluorosis in Countryside Middle School Students of Pinxiang City
    萍乡市农村学生龋齿及氟牙症流行病学调查
短句来源
    Methods A survey was made on dental caries among 2,863 college students in Ningbo according to the standard and method of survey on dental caries which was published by the World Health Organization in 1997. Results The dental caries rate in the college students was 58.40%, the index of DMFT was 1.12 and the filling rate was 31.68 %.
    方法采用世界卫生组织1997年公布的龋病调查标准和方法,对宁波市2863名大学生进行龋病调查。 结果被调查学生患龋率58.40%,龋均1.12,龋齿充填率31.68%。
短句来源
    [Methods] The WHO standard for dental caries diagnosis was applied for the investigation.
    方法按WHO龋齿检查诊断标准进行调查。
短句来源
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  龋牙
    The incidence of dental caries is found to be 45.79%, in which 93.82% had not been treated, only 1.6% were filled.
    结果45.79%的人患龋病,且全部龋牙中93.82%未治疗,仅1.60%填补。
短句来源
    The risk of a tooth being lost increased with increasing severity of the caries, 10 8% among sound teeth, 17 9% among teeth with enamel caries, 36 2% among teeth with dentin lesion, to 76 0% among teeth with deep dentin lesion.
    初查时无龋牙 1 0年后缺失 1 0 .8%,釉质龋牙缺失 1 7.9%,而牙本质深龋牙齿的缺失高达 76.0 %。
短句来源
    There were 3.11 times higher of caries examed by the dental probe than by CPI probe.
    恒牙牙位符合率是 32 .16 %,5号龋齿探针检出的有龋牙数是CPI探针的 3.11倍。
短句来源
    Results: Significant decline of total cultivatable bacteria and survival of specific cariogenic bacteria was found in 17 active root caries samples sealed with sealants for six months in contrast with the baseline (P<0.0001).
    结果:17例活动性根龋牙封闭治疗后半年,涂膜下存活细菌总量及特异致龋菌数量均大幅度降低(P<0.0001);
短句来源
    Results The prevalence of dental caries was 28.2% for adolescents in Henan. The DMFT was 0.54 and the filling percentage rate was 10.11% in three groups.
    结果河南省3个年龄组儿童青少年龋齿的患病率为28.2%,以窝沟龋和浅龋为主,恒牙龋均(DMFT)为0.54,龋患牙充填率为10.11%,需治龋牙86.71%为单面洞。
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  caries
Changes in the Levels of IAA, ABA, and Cytokinins in Wheat Seedlings Infected with Tilletia caries
      
The seedling growth and the content of endogenous phytohormones in wheat seedlings were estimated 3, 6, and 9 days after infection with the bunt pathogen (Tilletia caries) (DC.)TUL.
      
Zhnitsa) seedlings and calluses infected with spores of common bunt causal agent Tilletia caries (DC) Tul.
      
caries and grown on the hormone-free Murashige and Skoog nutrient medium.
      
Changes in the Phytohormone Levels in Wheat Calli as Affected by Salicylic Acid and Infection with Tilletia caries, a Bunt Patho
      
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A subsequent research of the destructive routes of early enamel cariousprocess is reported. Twenty five teeth with white or brown spots were pre-pared and observed under scanning electron microscope. Seventeen of themwere viewed in the longitudinal sections through the centers of the le-sions and the other eight in the surface of the lesions. Artificial carious lesions were made on five newly extracted anteriorteeth by incubating them in a mixture of 5% cane sugar and saliva collect-ed from caries-active...

A subsequent research of the destructive routes of early enamel cariousprocess is reported. Twenty five teeth with white or brown spots were pre-pared and observed under scanning electron microscope. Seventeen of themwere viewed in the longitudinal sections through the centers of the le-sions and the other eight in the surface of the lesions. Artificial carious lesions were made on five newly extracted anteriorteeth by incubating them in a mixture of 5% cane sugar and saliva collect-ed from caries-active patients. Longitudinal sections were observed underoptic and polarizing microscopes. The SEM observations showed that the surfaces over the early enamelcarious lesions are destroyed. Short crackings and holes were ob-served. In the outer portions of the lesion widening of the interprismaticspace and dissolution of the enamel rod cores were well shown. Then thedisapperance of the enamel rods was clear1y demonstrated. When thepathological process reaches the lines of Retzius, it spreads out widelyalong these lines. This was demonstrated very clearly under a polarizingmicroscope. According to these observations, the authors suggest that there are tworoutes of the pathological process in early enamel caries. One is the primaryroute which proceeds along the interprismatic space, arid thereby theenamel rods are gradually destroyed .The other one is the secondary routeof which the destruction spreads along the lines of Retzius. The so-called intact surface zone over the early enamel carics is alsoexamined. But, contrary to the expectation of many authors some of theinterprismatic substances and enamel rods in this zone must have beendestroyed before the development of the subsurface lesions.

本文报导作者对早期牙釉质龋病变进行继续研究的结果。对25颗早期釉质龋和5颗人工龋的标本进行了观察,结果证明早期牙釉质龋的破坏先自牙面开始,以后沿牙釉柱方向穿过表层牙釉质往表层下进行,当病变达到生长线时,则沿生长线平面扩展。牙釉质的破坏开始表现为牙釉柱周围部分和柱心的溶解,以后整个牙釉柱被溶解。

Experiments on the remineralization of artificial carious enamel with radioactive isotope ~(45)Ca are presented. ~(45)Ca can be deposited in the demineralized area of artificial caries from outer environment. The experiments show that the density of the developed silver granules in autoradiograms clearly represents the intrusive quantity of calcium ion and the degree of demineralization.In addition, in this paper, the possibility of remineralization in human body; the relation between the degree of demineralization...

Experiments on the remineralization of artificial carious enamel with radioactive isotope ~(45)Ca are presented. ~(45)Ca can be deposited in the demineralized area of artificial caries from outer environment. The experiments show that the density of the developed silver granules in autoradiograms clearly represents the intrusive quantity of calcium ion and the degree of demineralization.In addition, in this paper, the possibility of remineralization in human body; the relation between the degree of demineralization and that of remineralization; and the significance in the clinical work are discussed.

取离体牙制成人龋,用~(45)Ca之同位素液体浸泡,在自显影照片上,均可见釉质层在不同钙化程度之区域显示出不同程度之黑色,如自然龋之黑色最深,人工龋和牙本质之黑度相似。表明钙化程度越低,渗入之钙亦越多。也说明了牙硬组织脱钙越严重,相应地会得到更多的钙。 牙釉质由羟磷灰石构成,脱钙后其本身结构发生改变,即在其晶格的某一位置上缺少钙离子,这些缺钙的磷灰石是不稳定的,当周围直接环境中如有一定量的钙,经过离子交换作用,钙离子能渗入牙硬组织之钙化较低部分。 经以上实验结果说明以含钙之再矿化液浸泡龋,也会得到再矿化之效果。

The distributions of initial enamelcaries and dental plaques on occlusalsurfaces of 236 young people wereexamined. The proximal surfaces ofanother 255 freshly extracted posteriorteeth with initial carious lesions werealso investigated. The plaques on thesesurfaces were stained with erythrosine.The topography of these lesions andthe distribution of plaques was drawnon a chart. The summation of theseresults shows clearly that there is asignificant relationship between thedistributions of lesions and plaques.This...

The distributions of initial enamelcaries and dental plaques on occlusalsurfaces of 236 young people wereexamined. The proximal surfaces ofanother 255 freshly extracted posteriorteeth with initial carious lesions werealso investigated. The plaques on thesesurfaces were stained with erythrosine.The topography of these lesions andthe distribution of plaques was drawnon a chart. The summation of theseresults shows clearly that there is asignificant relationship between thedistributions of lesions and plaques.This is especially true of the femalesex. Our results showed that the mostsensitive areas of early enamel carieson occlusal surfaces of permanent mo-lars were: central and distal pits. Themost sensitive area on proximal sur-face of permanent posteriors was thepart just located gingiyally to the con-tact point. The distribution of initialcarious lesions on proximal surfaceswas also closely related to dentalplaques. Ninety nine posterior molars withinitial pit or fissure caries were cut andground longitudinally. The sectionswere examined under optic microscope.One hundred and twenty pits wereobserved and 113 of them had initialenamel carious lesions. Most of theselesions were situated at the bottomof the pits.

作者在236名9~32岁男女和255个离体牙上观察了早期龋损害的部位及其与菌斑的关系。表明恒磨牙咬合面中央点隙和远中点隙以及邻面的触点龈方是最敏感的部位。这些早期损害均与菌斑有显著的依存关系。这种关系在女性表现尤为突出。另外检查277颗离体牙邻面早期损害与触点关系时,发现在触点龈方受累者占84.48%,这也间接证明了龋病发生在菌斑堆积部分的显著性。对99颗磨牙的120个点隙沟的镜下观察,说明点隙沟的早期龋损害主要发生在底部。

 
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