Effects of fixed orthodontic brackets on oral malodor: A systematic review and meta-analysis according to the preferred reporting items for systematic reviews and meta-analyses guidelines.

Medicine (Baltimore) · 2018 · PMC5902289 · PMID 29620635

Europe PMC DOI

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nearly significantno p-value reported

3 , malodor was more serious in the orthodontic group than the control group, although this difference was only significant at the first week and nearly significant at 2 to 3 months.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.