Research Article
Effect of Removal of Enamel on Rebonding Strength of Resin Composite to Enamel
Table 4
Surface roughness parameters of
Ra and
Rt of the substrates of test groups in
μm. For defining parameters
Ra and
Rt, see Figure
3.
| | | Intact enamel | Etched intact enamel (E) | Etched enamel before 1st bonding | Reetched after debonding (G0) | Ground 10 s, etched (G1) | Ground 20 s, etched (G2) | Ground 30 s, etched (G3) |
| | Ra | 0.954 | 2.307 | 1.928 | 0.301 | 1.945 | 0.857 | 0.343 | | Rt | 6.245 | 113.359 | 27.084 | 7.463 | 21.344 | 13.688 | 5.175 |
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