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Antibiotic administration alleviates the aggravating effect of orthodontic force on ligature-induced experimental periodontitis bone loss in mice.

Abstract：

BACKGROUND AND OBJECTIVES:It is recognized that orthodontic force (OF) has an aggravating effect on the progression of destructive periodontitis if periodontitis have not been well controlled. However, the underlying mechanism is not completely clear. This study was to investigate the effect of antibiotic administration on OF-aggravated, ligature-induced experimental periodontitis in mice. MATERIAL AND METHODS:C57BL/6 mice (male, 8 wk old) were divided into three groups (n = 8). Silk ligatures (SL) were tied around the maxillary right (group 1) or both (groups 2 and 3) first molars on day 0, removed on day 8 and systemic antibiotics was administered through drinking water (group 3) since day 8. OF was applied on the maxillary right first molars since day 13 (groups 2 and 3). All mice were killed on day 20. RESULTS:Total oral bacteria load was significantly higher in group 2 when compared to group 1 on day 20, whereas such count was greatly reduced in group 3 when antibiotics were administered. Periodontal bone loss was significantly increased on SL side vs. control side in group 1. Periodontal bone loss was significantly increased on OF + SL side vs. SL side in group 2 (p < 0.05) but not in group 3 when systemic antibiotics were administered. Gingival mRNA and protein expressions of receptor activator of nuclear factor kappa-B ligand/osteoprotegerin were significantly increased on OF + SL side vs. SL side in group 2 (p < 0.01) but not in group 3. However, comparable levels of tartrate-resistant acid phosphatase-positive cell formation within periodontal space and tooth movement were observed on OF + SL side in groups 2 and 3. CONCLUSION:Our results suggest that reduction of oral bacterial load by antibiotic administration alleviate orthodontic force-aggravated periodontitis bone loss.

journal_name

J Periodontal Res

journal_title

Journal of periodontal research

authors

Shi J,Liu Z,Kawai T,Zhou Y,Han X

doi

10.1111/jre.12439

subject

Has Abstract

pub_date

2017-08-01 00:00:00

pages

725-733

issue

eissn

0022-3484

issn

1600-0765

journal_volume

pub_type

杂志文章

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Antibiotic administration alleviates the aggravating effect of orthodontic force on ligature-induced experimental periodontitis bone loss in mice.