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《West China Journal of Stomatology》 2014-01
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Comparative studies on cariogenic bacteria of the root surface before and after post-core crown restoration in aged people

Lü Yan;Xu Xinyi;Guo Bin;Fu Min;Jia Yue;Guo Xiaolong;Chen Yuanyuan;Yuan He;Institute of Stomatology, General Hospital of Chinese PLA;State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University;  
Objective To investigate the changes in the quantity of colonizing Streptococcus mutans(S. mutans) and Actinomyces on the root surface plaque before and after post-core crown restoration of the mandibular first molars in the elderly patients. Methods A total of 30 elderly patients, each with one post-core crown restoration of the mandibular first molar, were randomly chosen to participate in the studies. Patients with mandibular first molars with post-core crown restoration and those with healthy contralateral mandibular first molars were divided into the test and control groups, respectively. Root surface plaques of the two groups were collected before tooth preparation, 72 h after preparation, one week after preparation, and one month after restoration. S. mutans, Actinomyces naeslundii(A. naeslundii) and Actinomyces viscosus(A. viscosus), were identified using colony morphology, biochemical techniques, and polymerase chain reaction(PCR). Plaque count was measured using microbial colony count. Results The number of S. mutans and A. viscosus and A. naeslundii in the test group, which was statistically significant(P0.05), increased 72 h after preparation. The quantities of S. mutans, A. viscosus, and A. naeslundii one week after preparation were significantly different(P0.05). The plaque count of S. mutans, A. viscosus, and A. naeslundii in the test group decreased one month after restoration(P0.05). Conclusion The quantities of S. mutans, A. viscosus and A. naeslundii increase one week after preparation but decrease one month after restoration. The finding suggests that dentists should educate patients about plaque control during the early period after tooth preparation.
【Fund】: 四川省科技计划基金资助项目(2013SZ0008);; 解放军总医院临床扶持基金资助项目(2012FC-TSYS-2003)
【CateGory Index】: R783.2
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【Citations】
Chinese Journal Full-text Database 3 Hits
1 YANG Ran1,ZOU Jing2,LI Ji-yao3.(1.State Key Laboratory of Oral Diseases,Sichuan University,Chengdu 610041,China;2.Dept.of Pediatric Dentistry,West China College of Stomatology,Sichuan University,Chengdu 610041,China;3.Dept.of Endodontics,West China College of Stomatology,Sichuan University,Chengdu 610041,China);Study of the relationship between oral Actinomyces and childhood caries[J];West China Journal of Stomatology;2007-06
2 GUO Bin1,2,YANG Fan3,JIA Yue1,XIA Qian1,ZHOU Xue-dong1.(1.State Key Laboratory of Oral Diseases,Sichuan University,Chengdu 610041,China;2.Institute of Stomatology,General Hospital of Chinese PLA,Beijing 100853,China;3.Dept.of Conservative Dentistry and Endodontics,Kunming Dental Hospital,Kunming 650000,China);The genotypic diversity of oral Actinomyces naeslundii of root caries in aged people[J];West China Journal of Stomatology;2010-06
3 Yue,YANG Fan,XIA Qian,LIU Jing,GUO Bin. (State key laboratory of oral disease,Sichuan University,Sichuan 610041,China );The abstraction and identification of oral actinomyces naeslundii of root caries in aged people[J];Chinese Journal of Geriatric Dentistry;2009-04
【Co-citations】
Chinese Journal Full-text Database 4 Hits
1 Yang Xiaoqiong1,Zou Jing2.(1.State Key Laboratory of Oral Diseases,Sichuan University,Chengdu 610041,China;2.Dept.of Pediatric Dentistry,West China Hospital of Stomatology,Sichuan University,Chengdu 610041,China);Researches of oral microbiota associated with early-childhood caries[J];International Journal of Stomatology;2011-04
2 ZHANG Peng;TAN Baochun;XIAO Jianping;WU Wenlei.;Institute and Hospital of Stomatology,Nanjing University Medical School, Nanjing Stomatology Hospital;;The clinical application of Superbond adhesive system in advanced periodontitis[J];Stomatology;2013-11
3 LI Mingbo,YI Hong,YIN Lixue,MENG Lingna,XUN Ying.Department of Operative Dentistry and Endodontics,College of Stomatology,Harbin Medical University,Harbin 150001;Quantitative detection study of the interaction between actinomyces in saliva and caries in children[J];Journal of Modern Stomatology;2012-02
4 BAI Yue,JIANG Hong,LIU Tong-tong,Wang Xin-lun;Research on incidence of dental caries in children and its influence factors in China[J];Chinese Journal of Health Education;2011-10
【Secondary Citations】
Chinese Journal Full-text Database 1 Hits
1 ZHANG Ting-fa WANG Meng-tao ZHANG Chun-mei YANG Sheng-hui Department of Stomatology,Beijing Hospital,Beijing 100730,China;An analysis of the dental plaque microbiology of root surface caries in elderly patients[J];Chinese Journal of Geriatrics;2006-02
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