龋

牙齿上的空洞是由龋蚀造成的。

Cavities in teeth are caused by decay .

致龋菌混合培养pH变化与时间的关系

Relationship between pH changes of the mixed cariogenic bacteria in culture and incubation time

门诊患者根面龋危险因素的Logistic回归分析

Analyzing the risk factors of root carries in outpatient by Logistic regression analysis

父亲的文化程度和家庭经济收入对乳牙龋也有影响（P＜0.05）；

The educational status of the father and receipt of income benefits and effects on the deciduous caries ( P < 0.05 ) .

根面龋的发病情况用Logistic回归分析计算结果判别的总正确率为93.24%。

The overall ratio correct of the root carries by the Logistic regression was 93.24 % .

Dm级龋损仅见于蒸馏水组。

Caries at Dm level are only found in the distilled water group .

用有序Logistic模型分析恒牙患龋程度与若干暴露因素的关系

Analysis of the Relationship between the Decaying Degree of Permanent Teeth and Certain Exposure Factors with Ordinal Logistic Model

相同pH的酸液比酸胶形成的人工龋更易摄取矿物离子。

The mineral ion intake was higher in the carious lesions induced by acid solu - tion than that by acid gel at the same pH level .

结论选用FX玻璃离子水门汀作为老年龋损永久充填材料。

Conclusion The FX might be the permanent materials for senile caries .

目的探讨龋变牙面出现氧化还原电位（Eh）的机理。

Objective To study the mechanism of redox potential ( Eh ) formation on decayed tooth surface .

Dx级龋损在三组中均未出现。

Dx class was not found in all three groups .

目的评价无创伤性修复治疗技术（ART）用于防治儿童乳牙龋损的效果和可接受性。

Objective To evaluate the acceptance and effectiveness of Atraumatic Restorative Treatment ( ART ) in the decayed deciduous teeth in Chinese rural preschool children , and to explore the feasibility of ART .

因此，Er，Cr：YSGG激光能够替代常规去龋备洞方法。

The Er , Cr : YSGG laser seems to be effective in the treament of carious and in cavity preparation in vitro .

龋牙、炎症牙髓TNF－α含量明显增加（P＜0.01），其在牙髓中的分布也发生变化。

Significantly higher levels of TNF - α were found in pulps of carious teeth and inflammatory pulps , in which changed distribution of TNF - α was also observed .

结论：抗龋IgY对体外培养细胞生长、形态无影响；

CONCLUSION : Anti-dental caries IgY has no significant influence on the cultured cells .

结论：抗龋IgY牙膏能降低乳牙龋病的发病率、龋均，具有一定的防龋效果。

CONCLUSION : Anticarious IgY toothpaste is efficient in preventing caries on deciduous teeth .

抗龋IgY牙膏对大鼠口腔病原菌影响的扫描电镜观察

Observation of influence of anticarious IgY-toothpaste to the pathogenic bacteria in mouth of rat

抗龋IgY和IgY牙膏对体外培养细胞影响的形态学观察

Influence of anti - dental caries IgY and IgY toothpaste on morphology of cultured cells

以健康、浅龋和深龋牙齿中牙髓组织为研究对象，利用免疫组化、RT-PCR、实时荧光定量PCR和Western印迹检测MMP-2在其中的表达差异。

METHODS : The expression of MMP-2 in of the pulp of the healthy and carious tooth were examined by immunohistochemical staining , RT-PCR , real-time PCR and western-blot .

目的：研究抗龋IgY牙膏乳牙防龋效果。

AIM : AIM : To study the effect of the anticarious IgY toothpaste on deciduous teeth .

牙菌斑牙龈炎在有无患龋两组之间的差异有明显统计学意义（p0.05）。

The plaque and gingivitis in caries and caries-free group there are significant differences between the two groups , there was statistically significant ( p 0.05 ) . 4 .

酸性预处理可获得人工早期釉质龋，并提高牙釉质样品表面的亲水性，从而有利于诱导HA涂层的形成。

After acid treatment , initial enamel lesions could be gained and the hydrophilicity of the samples was improved . These were helpful for the preparation of coatings .

目的：观察抗龋IgY和IgY牙膏对变形链球菌超微结构的影响，为探讨IgY的防龋机制提供形态学资料。

AIM : To observe the influence of anticarious IgY and IgY toothpaste to the cultured Streptococcus utans .

方法应用逐步回归分析法对14个指标与根龋的龋补牙数（DFT）和龋补牙面数（DFS）进行多因素逐步回归分析。

Methods By stepwise multiple regression analysis , a total of 14 factors associated root caries were adopted to analysis .

结论：检测提示Mo、Ca、Pb、Cu、Sr的差异，可能为百岁老人致龋因素之一。

Conclusions : The difference of amount of Mo , Ca , Pb , Cu and Sr may be one of the factors of causing caries of over 100 years-old persons .

耐酸性是细菌在低pH环境下继续产酸并行使功能的能力，被认为是致龋菌在牙的生物膜上生存的一个重要决定因素。

Acid resistance is that bacteria can continue producing acid and performing its function under low pH value , which is regarded as an important determinant factor for survival of cariogenic bacteria in the biofilm on teeth .

结果多龋组儿童唾液SIgA浓度显著低于无龋组；

Results The SIgA concentration of unstimulated saliva of caries - susceptible children was significantly lower than that of caries-free children .

采用变形链球菌接种Wistar大鼠磨牙，给予致龋饲料，建立龋病模型。

Wistar rats , whose molars were inoculated with Streptococcus mutans ( S. mutans ), were fed with caries-inducing diet 2000 in order to establish the caries rat model .

方法：用选择性培养基MS和BYS对30例根面龋中的变形链球菌、放线菌定量研究。

Methods : Streptococcus mutans and Actinomyces in 30 cases of dental root surface caries are studied quantitatively by selective media .

结论：各致龋菌耐酸相关基因ffh同源性高。

CONCLUSION : The homology of the acid-resistant gene ffh in cariogenic genus is high .