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Identification of bacteria from the peri-implant sulcus of orthodontic mini-implants using 16S rDNA clone library  

Lim, Sung-Hoon (Department of Orthodoniics, College of Dentistry, Chosun University)
Kim, Kwang-Won (Department of Orthodoniics, College of Dentistry, Chosun University)
Yoo, So-Young (Department of Oral Chemistry, College of Dentistry, Chosun University)
Kook, Joong-Ki (Department of Oral Chemistry, College of Dentistry, Chosun University)
Chang, Young-Il (Department of Orthodontics, College of Dentistry, Seoul National University)
Publication Information
The korean journal of orthodontics / v.36, no.4, 2006 , pp. 251-262 More about this Journal
Abstract
Objective: The purpose of this study was to compare the bacterial flora at the peri-implant sulcus of the orthodontic mini-implant placed in the alveolar mucosa with the bacterial flora at the adjacent healthy gingival sulcus. Methods: Two plaque samples from 7 patients were collected by inserting paper points into the sulcus between the mini-implant and ligature wire connected to the mini-implant head and inflamed alveolar mucosa, and from the gingival sulcus of a healthy tooth adjacent to the mini-implant. Results: Using 16S rDNA clone library, the 24 kinds of bacteria including Haemophilus aphrophilus, Sphingomonas species, Capnocytophaga species, Prevotella melaninogenica, Lachnospiraceae species, Porphyromonas species, Neisseria flava were identified only from the sulcus around the mini-implant. These bacteria constituted only 9.2% of total clones, and the bacteria identified from both the sulcus around mini-implants and the gingival sulcus constituted 80.4% of total clones. Of these bacteria, clones of Prevotella species, Atopobium rimae, Veillonella species, Streptococcus intermedius/constellatus, Streptococcus salivarius were more frequently isolated from the peri-implant sulcus. Conclusion: This study suggests that a broad epidemiological study is needed to find causative bacteria which induce inflammation from the peri-implant sulcus.
Keywords
Mini-implant; Soft tissue inflammation; Alveolar mucosa; Bacteria;
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