Pathogen of root surface caries in the elderly  

老年根面龋患者菌斑致病菌分析(英文)

作　　者：张廷发[1] 张玉幸[1] 张春梅[2] 杨圣辉[2] 

机构地区：[1]卫生部北京医院口腔科,北京100730 [2]首都医科大学口腔医学研究所,北京100050

出　　处：《Chinese Medical Journal》2001年第7期95-96,111,共3页中华医学杂志（英文版）

摘　　要：Abstract:Objective To study the pathogen of root surface caries in the elderly. Methods Plaque samples from the experimental group and the control group were collected. After culturing in selective and non-selective media, the different bacteria were isolated. The counts and the positive rates of total bacteria, porphyromonas group, pervotella group, streptococcus mutants group, actinomyces group and lactobacillus group were compared.Results The counts of total bacteria, streptococcus mutants, actinomyces and lactobacillus of the experimental group were higher than those of the control group. The positive rates of actinomyces and lactobacillus of the experimental group were significantly higher than those of the control group. Conclusion Actinomyces and lactobacillus are the main related pathogens of root surface caries in the elderly.目的　探讨老年人根面龋的有关致龋菌。方法　收集 6 0～ 77岁有根面龋与无根面龋受试者菌斑标本 ,接种选择与非选择培养基。培养分离后 ,对总菌、产黑色素菌、链球菌、变形链球菌、放线菌、乳酸杆菌的菌数及检出率进行比较分析。结果　试验组总菌、链球菌、放线菌、乳酸杆菌数及其放线菌、乳酸杆菌的检出率均比对照组高。结论　放线菌和乳酸杆菌可能是老年人根面龋的主要相关致病菌。

关 键 词：root surface caries ·  actinomyces  ·  lactobacillus  ·   streptococcus mutants 

分 类 号：R781.1[医药卫生—口腔医学]