Chemfil Superior is a glass-ionomer which its makers claim can establish a true, permanent bond to hydroxyapatite even under the unfavourable, moist conditions of cavities close to the gingival margin. In addition, it allows dentists enough time to work before a rapid set, and can be used in cavities with margins in dentine or cavities close to the gingival margin, where moisture control is not possible.
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Permanent bond. Br Dent J 197, 769 (2004). https://doi.org/10.1038/sj.bdj.4812000
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DOI: https://doi.org/10.1038/sj.bdj.4812000