Mechanical non-surgical treatment of peri-implantitis: a single-blinded randomized longitudinal clinical study. II. Microbiological results

Document type: Journal Articles
Article type: Original article
Peer reviewed: Yes
Author(s): Rutger Persson, Emelie Samuelsson, Christel Lindahl, Stefan Renvert
Title: Mechanical non-surgical treatment of peri-implantitis: a single-blinded randomized longitudinal clinical study. II. Microbiological results
Journal: Journal of Clinical Periodontology
Year: 2010
Volume: 37
Issue: 6
Pagination: 563-573
ISSN: 0303-6979
Publisher: Wiley-Blackwell
URI/DOI: 10.1111/j.1600-051X.2010.01561.x
ISI number: 000277691300010
Organization: Blekinge Institute of Technology
Department: School of Health Science (Sektionen för hälsa)
School of Health Science S-371 79 Karlskrona
+46 455 38 50 00
http://www.bth.se/hal/
Language: English
Abstract: Peri-implantitis is common in patients with dental implants. We performed a single-blinded longitudinal randomized study to assess the effects of mechanical debridement on the peri-implant microbiota in peri-implantitis lesions.
Materials and Methods:
An expanded checkerboard DNA-DNA hybridization assay encompassing 79 different microorganisms was used to study bacterial counts before and during 6 months following mechanical treatment of peri-implantitis in 17 cases treated with curettes and 14 cases treated with an ultrasonic device. Statistics included non-parametric tests and GLM multivariate analysis with p < 0001 indicating significance and 80% power.
Results:
At selected implant test sites, the most prevalent bacteria were: Fusobacterium nucleatum sp., Staphylococci sp., Aggregatibacter actinomycetemcomitans, Helicobacter pylori, and Tannerella forsythia. 30 min. after treatment with curettes, A. actinomycetemcomitans (serotype a), Lactobacillus acidophilus, Streptococcus anginosus, and Veillonella parvula were found at lower counts (p < 0.001). No such differences were found for implants treated with the ultrasonic device. Inconsistent changes occurred following the first week. No microbiological differences between baseline and 6-month samples were found for any species or between treatment study methods in peri-implantitis.
Conclusions:
Both methods failed to eliminate or reduce bacterial counts in peri-implantitis. No group differences were found in the ability to reduce the microbiota in peri-implantitis.
Subject: Medical Sciences
Keywords: microbiota, peri-implantitis, S, aureus, treatment
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