Table 4 Acceptable discoloration changes and immersion period in respondents
From: Perceptual and quantitative analysis of discoloration of orthodontic elastomeric chains by food
Ratio (50%) | Ratio (90%) | |
|---|---|---|
Perceptibility of discoloration (\(\Delta {\text{E}}\)) | ||
Curry | 6.34 | 15.74 |
Coffee | 4.52 | 12.79 |
Wine | 4.65 | 8.76 |
Perceptibility of day | ||
Curry | 0.54 | 1.33 |
Coffee | 1.63 | 4.17 |
Wine | 7.84 | 11.89 |
Acceptability of discoloration (\(\Delta {\text{E}}\)) | ||
Curry | 6.34 | 16.52 |
Coffee | 4.46 | 17.90 |
Wine | 9.98 | 19.85 |
Acceptability of day | ||
Curry | 0.54 | 1.40 |
Coffee | 1.56 | 5.00 |
Wine | 13.00 | 21.00 |