Bonding and wear properties of self-adhesive flowable restor
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According to this study, lower values of the bonding and wear properties of self-adhesive flowable restorative materials can be improved by enamel etching.

The purpose of this study was to evaluate the bonding and wear properties of self-adhesive flowable restorative materials.

Five self-adhesive flowable restorative materials were used. The study parameters were: (i) shear bond strengths; (ii) microleakage; (iii) occlusal wear; and (iv) qualitative evaluation of the bonding interface.

--The range of shear bond strengths of the materials was as follows: 7.4–12.2 MPa to ground enamel, 22.5–32.5 MPa to etched enamel, and 1.3–4.2 MPa to dentin.

--The microleakage scores of the materials did not show any statistically significant differences regardless of the presence or absence of etching.

--The wear facets on the materials showed 0.099–0.447 mm3 of volume loss and 148.6–365.3 µm maximum depth, with statistically significant differences between materials.

--Scanning electron microscopic images of the interfaces of the materials showed good adaptation regardless of substrate.

In particular, the bonding and wear properties of self-adhesive flowable restorative materials were still limited and showed lower values than previously reported results for nanofilled composites with an adhesive system. Selective enamel etching can improve the bonding performance of these materials.

European Journal of Oral Sciences
Source: https://doi.org/10.1111/eos.12799
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