Table 3.
Mean (standard deviation) microtensile bond strength (in MPa) according to the bonding strategy, dentin pretreatment and time point
| Strategy | Pretreatment | Time point | |
|---|---|---|---|
| 24 h | 6 months | ||
| Etch-and-rinse | CON | 44.22 (10.20)Aa | 34.33 (11.83)Ba |
| DMSO | 47.20 (11.75)Aa | 31.52 (9.24)Ba | |
| DMSO/ water | 44.68 (10.16)Aa | 31.19 (10.16)Ba | |
| DMSO/ ethanol | 45.52 (6.88)Aa | 33.19 (6.38)Ba | |
| Self-etch | CON | #16.64 (10.99)Aa | #19.96 (11.11)Aa |
| DMSO | #22.26 (19.40)Aa | #18.43 (9.26)Aa | |
| DMSO/ water | #14.66 (9.10)Aa | #22.04 (9.18)Aa | |
| DMSO/ ethanol | #16.42 (9.37)Aa | #23.48 (10.87)Aa | |
Different superscript letters (capital letters in the rows and lowercase letters in the columns) indicate significant differences (p ≤ 0.05). # Differs from etch-and-rinse in the same group and time point (p ≤ 0.05). p (strategy) < 0.0001; p (pretreatment) = 0.8732; p (time) = 0.1079; p (strategy x time) = 0.1189; p (strategy x pretreatment) = 0.9250; p (group x time) = 0.2296; p (strategy x pretreatment x time) = 0.2469.