Research Article
Clinical Evaluation of Etched Enamel Discoloration following Immediate and Delayed Exposure to Colored Agents
Table 1
Mean and standard deviations of
of etched (case) and unetched (control) enamel in the four groups.
| | | Number | Minimum | Maximum | Mean ± SD |
| | Group I | | | | | | Case | 16 | 0.30 | 7.82 | 2.33 ± 1.8 | | Control | 16 | 0.50 | 5.12 | 1.96 ± 1.4 | | Group II | | | | | | Case | 16 | 0.90 | 7.10 | 3.70 ± 1.8 | | Control | 16 | 0.70 | 6.70 | 3.50 ± 1.8 | | Group III | | | | | | Case | 16 | 0.50 | 6.62 | 3.05 ± 1.7 | | Control | 16 | 0.42 | 5.22 | 2.40 ± 1.4 | | Group IV | | | | | | Case | 16 | 0.70 | 6.46 | 3.14 ± 1.5 | | Control | 16 | 0.57 | 8.35 | 2.56 ± 1.9 |
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