Infection at titanium implants with or without clinical inflammation

Persson, Gösta Rutger; Lang, Niklaus Peter; Renvert, Stefan (2006). Infection at titanium implants with or without clinical inflammation. In: Pan European Federation of IADR (PEF 2006). Dublin, Ireland. September 13-16, 2006.

Objectives: The aims of the present study were (1)to assess the microbiota at implants in function diagnosed as having either peri-implantitis, or mucositis, or being clinically without symptoms of inflammation, (2) to identify explanatory factors to implant status. Material and Methods: Clinical and microbiological data were collected from 138 subjects (mean age: 62.3 ± 14.9) with 524 implants in function for an average of 10.8 years (S.D. +1.5). The checkerboard DNA-DNA hybridization method was used to identify 40 bacterial species. Results: Subjects had poor oral hygiene with a mean % plaque score 53.2 ± 24.4. In 36% of cases periodontitis was reported as the cause for implant therapy. Mucositis was diagnosed in 61.6% and per-implantitis in 15.9% of all cases. Edentulous subjects had at implants with peri-implantitis significantly higher bacterial loads for Streptococcus sanguis (p<0.01), Fusobacterium nucleatum sp. nucleatum (p<0.02), and Leptothrichia buccalis (p<0.05) than did dentate implant subjects. Dentate subjects had higher bacterial loads of Porphyromonas gingivalis (p<0.02). The levels of Fusobacterium nucleatum sp.vincentii and Capnocytophaga ochracea were explanatory to mucositis. Only a history of periodontitis as cause of tooth loss and smoking were explanatory to peri-implantitis. The microbiota was not affect by supportive care patterns. Conclusions: Presence or absence of teeth partly explains the implant microbiota. A past history of periodontitis and smoking are associated with peri-implantitis. The microbiota at implants with mucositis, or peri-implantitis is similar to that of teeth. Supportive periodontal and implant therapy fails to have an impact on implant microbiota and does not prevent mucositis and peri-implantitis.

Item Type:

Conference or Workshop Item (Abstract)


04 Faculty of Medicine > School of Dental Medicine > Department of Periodontology

UniBE Contributor:

Persson, Gösta Rutger; Lang, Niklaus Peter and Renvert, Stefan


600 Technology > 610 Medicine & health




Eveline Carmen Schuler

Date Deposited:

04 Oct 2013 14:52

Last Modified:

25 Jan 2017 12:17

Additional Information:

Abstract 0762

URI: (FactScience: 19615)

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