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Dental Flossing and Interproximal Caries: a Systematic Review
P.P. Hujoel1,2,*,
J. Cunha-Cruz3,
D.W. Banting4 and
W.J. Loesche5
1 Department of Dental Public Health Sciences and
2 Department of Epidemiology, School of Dentistry, Box 357475. University of Washington, Seattle, WA 98195, USA;
3 Institute of Social Medicine, University of the State of Rio de Janeiro, Brazil;
4 Division of Practice Administration, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada; and
5 School of Dentistry, University of Michigan, Ann Arbor

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Figure 1. Flow diagram of the selection process of controlled trials on flossing and interproximal caries.
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Figure 2. Flossing and interproximal dental caries—fixed-effects meta-analysis and Forrest plot of the relative risks and risk differences.(AQ)
a Fluoride Topical fluoride exposure was categorized as not recommended (--), recommended to a subgroup or the whole cohort but with no compliance measures (–), recommended and compliance assessed (+), or delivered under supervised conditions (++).
b Oral hygiene was similarly classified as no instructions provided (--), instructions provided but compliance not measured (–), instructions provided and compliance measured by plaque scores or gingival bleeding scores (+), or provided under supervision (++).
c Test for overall effect: Z = 2.54 (P = 0.01) and test for heterogeneity: Chi2 = 16.77, df = 5 (P = 0.005), I2 = 70.2%.
d Test for overall effect: 3.88 (P = 0.0001) and test for heterogeneity: Chi2 = 9.37, df = 5 (P = 0.10), I2 = 46.6%.
e RR: Relative Risk.
f RD: Risk Difference.
g CI: Confidence intervals.
h The publication suggests a score of (--), while a personal communication suggests a score of (–).
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Journal of Dental Research, Vol. 85, No. 4,
298-305 (2006)
DOI: 10.1177/154405910608500404

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