Figure 2.

95% interval plots for the mean value of microleakage. (a) Confidence intervals within enamel group; (b) Confidence intervals within dentin group; (c) Confidence intervals for substrate factor; (d) Confidence intervals for time factor; (e) Confidence intervals for material factor. If the mean value corresponding to a level of the factor is not included in the confidence intervals corresponding to any other level of the factor, then the factor is statistically significant with a significance level equal to 5%