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Analysis of the growth of dental plaque on the surface of orthodontic vacuum-formed retainers following the use of different cleaning methods

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20 févr. 2023
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Figure 1

Box plot illustrating the median value and interquartile range of the bacterial count (log10) using different cleaning methods.
Box plot illustrating the median value and interquartile range of the bacterial count (log10) using different cleaning methods.

Figure 2

Methods for cleaning vacuum-formed retainers (VFRs), showing the 5-week protocol with a different cleaning method each week.
Methods for cleaning vacuum-formed retainers (VFRs), showing the 5-week protocol with a different cleaning method each week.

A comparison of bacterial count (log10) using different cleaning methods_

a. Descriptive statistics and comparison of bacterial count (log10) using different cleaning methods (Kruskal–Wallis test).
95% confidence interval for Mean
Median Min Max Mean Std. dev Std. error Lower bound Upper bound P value
Water 5.46a 0.00 7.11 5.09 1.79 0.39 4.28 5.91 0.001*
Brush+soap 4.95b 0.00 6.46 4.34 1.94 0.42 3.46 5.22
Tablet 4.45b 0.00 6.46 4.22 1.28 0.28 3.6 4.8
Brush+water 4.36b 0.00 5.54 3.29 2.41 0.53 2.19 4.38
Brush+toothpaste 4.26b 0.00 6.08 3.05 2.51 0.55 1.91 4.20
b. Pairwise comparison of bacterial count (log10) using different cleaning methods (Mann–Whitney U test).
P value of difference versus other groups
Group Water Brush and toothpaste Brush and soap Brush and water Tablet
Water 0.001* 0.016* 0.000* 0.001*
Brush and toothpaste 0.001* 0.110 0.690 0.456
Brush and soap 0.016* 0.110 0.234 0.182
Brush and water 0.000* 0.690 0.234 0.880
Tablet 0.001* 0.456 0.182 0.880
Langue:
Anglais
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Sujets de la revue:
Médecine, Sciences médicales de base, Sciences médicales de base, autres