Effect of various beverages on colour stability with CAD-CAM and light cure provisional restoration - An <i>in vitro</i> study.

Importantly, the critical Time x Group x Solution interaction was highly significant (F = 898.33, p < .001, partial η 2 = .986), demonstrating that the pattern of change over time differed markedly depending on both group and solution combinations.

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Soft drink displayed a decreasing trend from 15 days to 30 days, followed by stabilization or a slight increase at 90 days, suggesting an initial drop in effect that levelled off over time.

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