IADR Abstract Archives
Water Sorption and Solubility of an Experimental Bonding Resin
Objectives: This study evaluated the water sorption and solubility of the bonding resins of an experimental two-step self-etch adhesive and compared with the bonding resin of a commercial two-step self-etch adhesive.
Methods: Water sorption and solubility tests were performed following the ISO 4049:2019 (E) specification. Five bonded specimens were prepared from the experimental two-step self-etch adhesive BZF-29 (BZF, GC Corporation, Tokyo, Japan) and the commercial two-step self-etch adhesive Clearfil Megabond 2 (MB2, Kuraray Noritake Dental Corporation, Niigata, Japan) using a metal mold (10 mm of diameter and 1 mm thickness). After desiccation, the cured specimens were weighed and then stored in distilled water for 7-days. Independent sample t-tests were performed to determine the statistical difference between the tested groups at a 0.05 level of significance.
Results: The mean sorption value of BZF (34.3 ± 2.7 µg/mm3) was significantly lower (t4.497 = 30.713; p < 0.001) than that of MB2 (72 ± 0.7 µg/mm3). However, our solubility results revealed that the solubility of BZF (-8.1 ± 1.8 µg/mm3) was significantly higher (t4.495 = 7.974; p = 0.002) than that of MB2 (-2.7 ± 1.9 µg/mm3).
Conclusions: The results of the present investigation indicated lesser sorption but higher solubility of BZF when compared to MB2. Further studies are required for the evaluation of their mechanical properties and to establish relationships with their sorption and solubility properties.
Methods: Water sorption and solubility tests were performed following the ISO 4049:2019 (E) specification. Five bonded specimens were prepared from the experimental two-step self-etch adhesive BZF-29 (BZF, GC Corporation, Tokyo, Japan) and the commercial two-step self-etch adhesive Clearfil Megabond 2 (MB2, Kuraray Noritake Dental Corporation, Niigata, Japan) using a metal mold (10 mm of diameter and 1 mm thickness). After desiccation, the cured specimens were weighed and then stored in distilled water for 7-days. Independent sample t-tests were performed to determine the statistical difference between the tested groups at a 0.05 level of significance.
Results: The mean sorption value of BZF (34.3 ± 2.7 µg/mm3) was significantly lower (t4.497 = 30.713; p < 0.001) than that of MB2 (72 ± 0.7 µg/mm3). However, our solubility results revealed that the solubility of BZF (-8.1 ± 1.8 µg/mm3) was significantly higher (t4.495 = 7.974; p = 0.002) than that of MB2 (-2.7 ± 1.9 µg/mm3).
Conclusions: The results of the present investigation indicated lesser sorption but higher solubility of BZF when compared to MB2. Further studies are required for the evaluation of their mechanical properties and to establish relationships with their sorption and solubility properties.