Shanghai Journal of Stomatology ›› 2018, Vol. 27 ›› Issue (1): 56-60.doi: 10.19439/j.sjos.2018.01.013

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Changes of oral bacteria flora after wearing complete denture

YU Wei-qiang1, TIAN Fei2, GUO Xiao-kui2, ZHANG Fu-qiang1, YE Dong-xia3   

  1. 1.Department of Prosthodontics, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine. Shanghai 200011
    2.Department of Medical Microbiology and Parasitology, Institutes of Medical Sciences, Shanghai Jiao Tong University School of Medicine. Shanghai 200025
    3. Shanghai Research Institute of Stomatology. Shanghai, 200011, China
  • Received:2017-04-13 Revised:2017-08-15 Online:2018-02-25 Published:2018-03-05

Abstract: PURPOSE: This study investigateed the influence of complete denture on oral bacteria flora. METHODS: Bateria plaque samples in oral mucosa, saliva and denture surfaces in 11 edentulous patients were collected, then the 16S rRNA gene clone libraries were constructed. Pyrosequencing was used to analyze the 16S rRNA gene V3~V4 regions, oral bacteria flora were classified and identified. RESULTS: There were 64800 sequences in complete denture-wearing subjects, Streptococcus mitis, Gemella haemolysans, Rothia mucilaginosa, Porphyromonas sp, Neisseria zoodegmatis, Granulicatella elegans, Acinetobacter baumannii, Pseudomonas citrinum, Granulicatella adiacens and Fusobacterium canifelinum were the predominant species (37416 sequences). The species of denture tissue surface were similar to these of buccal vestibule after wearing denture, and the species of denture smooth surface were similar to these of tongue ventrum and the floor of mouth. CONCLUSIONS: The effect of complete denture on oral flora is still limited, and the composition of oral flora is influenced by many other factors.

Key words: Complete denture, Oral bacteria flora, 16S rRNA

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