变形链球菌是引发龋病的主要病原因素。
Streptococcus mutans is the primary etiological agent of human dental caries.
变形链球菌；荧光定量PCR；唾液；
目的研究变形链球菌对镍铬合金耐蚀性能的影响。
Objective to study the effect of Mutans Streptococcus on the corrosion resistance of Ni-Cr alloy.
目的探讨北京蜂胶提取物对变形链球菌产酸的影响。
Objective To study the effect of proplis on the production of lactic acid from S.
目的：人工合成变形链球菌密度感也CSP信号肽及鉴定。
PURPOSE: To synthesis and identify the competence stimulated peptide (CSP) of streptococcus mutans quorum sensing signaling system.
目的：观察不同糖源对变形链球菌(变链)生长产酸的影响。
Objective: to observe the inhibitory effect of anti-streptococcus mutants Hen egg yolk (IgY) on production of acid by streptococcus mutants.
目的：观察不同糖源对变形链球菌（变链）生长产酸的影响。
Objectives:To evaluate the effect of different carbohydrates in the broth on the acidogenicity of the Streptococcus mutans isolates.
口腔变形链球菌是龋病的主要致病菌，血链球菌为牙周有益菌。
Oral Streptococcus mutans is an etiologic agent of dental caries and Streptococcus sangius is in favor of periodontal tissues.
方法在厌氧培养条件下培养各株变形链球菌，用OD值测量法计算粘附量。
Methods The adherence amount was measured by OD reading after anaerobic incubation.
目的：探讨不同龋敏感者变形链球菌临床分离株的生物膜形成能力和产酸能力。
OBJECTIVE: To investigate the ability of biofilm formation and aciduricity of Streptococcus mutans isolated from people with different caries susceptibility.
结果显示两种变形链球菌只能利用蔗糖合成葡聚糖，且合成葡聚糖总体能力相似。
The results showed that sucrose was the only substrate of these two streptococci and there was no significant difference in their amount of synthesizing glucan from sucrose.
目的：对不同粘附力变形链球菌临床分离株表面蛋白V区、P区编码基因进行序列测定。
Objective: To sequence V-region and P-region gene of surface protein of serotype c Streptococcus mutans clinical isolates with different adherent abilities.
目的：探讨变形链球菌对表面涂有不同超疏水纳米膜的羟基磷灰石片的黏附和早期生物膜的形成。
Objective: To examine the adhension and formation of the dental biofilm by sreptococcus mutans on superhydrophobic nanometer film.
结果：高龋组变形链球菌临床分离株的生物膜厚度和细菌分布密度显著高于无龋组（P<0.05）；
RESULTS:The biofilm thickness and bacterial density in caries-active group were significantly higher than that in caries-free group (P<0.05);
方法：用液体稀释法测定纳米载银抗菌剂对变形链球菌和白色念珠菌的最小抑菌浓度、最小杀菌浓度；
Observation on Impact Srength was made on the influence of PMMA denture base with silver-containing antimicrobial agents of nanometer.
变形链球菌族（MS）是目前公认的致龋菌，其中与人类龋病发生关系密切的是变形链球菌和茸毛链球菌。
Mutans streptococci (MS) are the primary cariogenic agents, and Streptococcus mutans and Streptococcus sobrinus are believed to have the closest relationship with human caries.
目的观察和探讨洗必泰涂料对正畸儿童牙面菌斑中细菌总数和变形链球菌数的影响，以及唾液pH值的改变。
Objective To evaluate the effect of chlorhexidine varnish on Streptococcus mutans and total bacterial count in dental plaque of orthodontic children, and the changes of salivary pH.
而对于变形链球菌形成的生物膜，则可使其结构发生改变，包括基质的减少，更加分散的分布，粘附细胞层数的减少。
The architecture of biofilms formed by antisense PS-ODNs-treated S. mutans showed reduced biomass, more dispersed distribution with enlarged interspaces and fewer layers of attached cells.
经AP_PCR扩增，24名儿童口腔中检测出29个不同基因型的变形链球菌，其中携带2个以上基因型儿童占45.8%。
A total of 46 S. mutans isolates from 24 subjects were analyzed by AP_PCR, and 29 different amplitypes were identifyied, 45.8% carried two genotypes.
本文以大肠杆菌为参照，对变形链球菌和血链球菌ATP酶的基因结构进行比较，探讨口腔致龋菌的质子移位膜ATP酶的结构特性。
In order to understand the genetic structure of F-ATPase of S. matans, we discuss the structure of F-ATPase of E. coli, S. matans and S. sanguis.
本文以大肠杆菌为参照，对变形链球菌和血链球菌ATP酶的基因结构进行比较，探讨口腔致龋菌的质子移位膜ATP酶的结构特性。
In order to understand the genetic structure of F-ATPase of S. matans, we discuss the structure of F-ATPase of E. coli, S. matans and S. sanguis.
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