Mechanical non-surgical treatment of peri-implantitis: a double-blind randomized longitudinal clinical study. I: clinical results

Document type: Journal Articles
Article type: Original article
Peer reviewed: Yes
Author(s): Stefan Renvert, Emelie Samuelsson, Christel Lindahl, Gösta Rutger Persson
Title: Mechanical non-surgical treatment of peri-implantitis: a double-blind randomized longitudinal clinical study. I: clinical results
Journal: Journal of Clinical Periodontology
Year: 2009
Volume: 36
Issue: 7
Pagination: 604-609
ISSN: 0303-6979
Publisher: Wiley Blackwell
URI/DOI: 10.1111/j.1600-051X.2009.01421.x
ISI number: 000267120900010
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 a frequent finding in patients with dental implants. The present study compared two non-surgical mechanical debridement methods of peri-implantitis.

Material and Methods

Thirty-seven subjects (mean age 61.5; S.D +/- 12.4), with one implant each, demonstrating peri-implantitis were randomized, and those treated either with titanium hand-instruments or with an ultrasonic device were enrolled. Data were obtained before treatment, and at 1, 3, and 6 months. Parametric and non-parametric statistics were used.

Results

Thirty-one subjects completed the study. The mean bone loss at implants in both groups was 1.5 mm (SD +/- 1.2 mm). No group differences for plaque or gingival indices were found at any time point. Baseline and 6-month mean probing pocket depths (PPD) at implants were 5.1 and 4.9 mm (p=0.30) in both groups. Plaque scores at treated implants decreased from 73% to 53% (p < 0.01). Bleeding scores also decreased (p < 0.01), with no group differences. No differences in the total bacterial counts were found over time. Higher total bacterial counts were found immediately after treatment (p < 0.01) and at 1 week for ultrasonic-treated implants (p < 0.05).

Conclusions

No group differences were found in the treatment outcomes. While plaque and bleeding scores improved, no effects on PPD were identified.
Subject: Medical Sciences
Keywords: mechanical, non-surgical therapy, peri-implantitis, ultrasonic, ultrasonic
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