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Long-term follow-up of turned single implants placed in periodontally healthy patients after 16 to 22 years: microbiologic outcome.
University of Ghent, Ghent, Belgium.
University of Ghent, Ghent, Belgium & Malmö University, Malmö, Sweden.
Clinic for Prosthodontics, Centre of Dental Specialist Care, Malmö, Sweden.
Department of Periodontology, University of Bern, Bern, Switzerland.ORCID-id: 0000-0002-3620-5978
Vise andre og tillknytning
2013 (engelsk)Inngår i: Journal of periodontology, ISSN 1943-3670, Vol. 84, nr 7, s. 880-894Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

BACKGROUND: Survival rates in implant dentistry today are high, although late failures do occur for many reasons, including peri-implant infections. The primary objective of this study is to investigate microbiota around single turned implants after 16 to 22 years. Secondary objectives are to compare teeth and implants and to correlate microbiologic, radiographic, and clinical parameters.

METHODS: A total of 46 patients with single implants were invited for a clinical examination. Clinical data were collected from implants and contralateral natural teeth. Radiographic bone level was measured around implants. Microbiologic samples were taken from implants, contralateral teeth, and the deepest pocket per quadrant. Samples were analyzed with DNA-DNA hybridization including 40 species. Statistical analysis was performed using Wilcoxon signed-rank tests, McNemar tests, and Spearman correlation coefficients with a 0.05 significance level.

RESULTS: Mean follow-up was 18.5 years (range 16 to 22 years). Tannerella forsythia (1.5 × 10(5)) and Veillonella parvula (1.02 × 10(5)) showed the highest concentrations around implants and teeth, respectively. Porphyromonas gingivalis, Prevotella intermedia, and T. forsythia were significantly more present around implants than teeth. Mean counts were significantly higher around implants than teeth for Parvimonas micra, P. gingivalis, P. intermedia, T. forsythia, and Treponema denticola. Total DNA count was correlated to interproximal bleeding index (r = 0.409) and interproximal probing depth (r = 0.307). No correlations were present with plaque index or radiographic bone level.

CONCLUSIONS: In the present study, bacterial counts around single implants in periodontally healthy patients are rather low. Although pathogenic bacteria are present, some in higher numbers around implants than teeth (five of 40), the majority of implants present with healthy peri-implant tissues without progressive bone loss.

sted, utgiver, år, opplag, sider
2013. Vol. 84, nr 7, s. 880-894
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URN: urn:nbn:se:hkr:diva-12239DOI: 10.1902/jop.2012.120187ISI: 000328684600004PubMedID: 22934839OAI: oai:DiVA.org:hkr-12239DiVA, id: diva2:728734
Tilgjengelig fra: 2014-06-24 Laget: 2014-06-24 Sist oppdatert: 2014-09-18bibliografisk kontrollert

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