Publication date: Available online 11 December 2017
Source:Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
Author(s): Lieselotte De Bruyn, Ruxandra Coropciuc, Wim Coucke, Constantinus Politis
ObjectiveThis study aimed to investigate the bacterial population in patients with medication-related osteonecrosis of the jaw (MRONJ) after treatment with doxycycline and metronidazole.Study DesignThirty-eight patients with MRONJ (age range 55–88, mean age 73 + 8.82 SD) treated with doxycycline first and secondly with metronidazole were enrolled in this study. Two swabs were taken at the margin of the infected MRONJ lesion after applying pressure on the marginal mucosa and visible pus was secreted. RT-PCR was used to analyse 20 perio-pathogenic and commensal species and the total bacterial level. Bacterial counts were compared between antibiotic treatments and with a control group of orally healthy patients that didn't have periodontal pockets of more than 3 mm (n=29) by means of a Mann-Whitney U test. Comparisons between the two antibiotic treatments were performed by a paired Wilcoxon signed rank test.ResultsThe total bacterial level was significantly higher in the MRONJ patients treated with systemic antibiotics compared with the control group. However, significant lower bacterial amounts were found for 12 of the 20 investigated bacteria. We couldn't establish a significant advantage of metronidazole administration after doxycycline treatment.ConclusionOur findings suggest that the total bacterial level in MRONJ patients is higher even when treated with systemic antibiotics. The significantly different bacterial amounts of the selected species suggest an alteration in the microbial population.
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Δευτέρα 11 Δεκεμβρίου 2017
Microbial population changes in patients with medication-related osteonecrosis of the jaw treated with systemic antibiotics
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