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Krentowska A, Sierko-Nobis E, Strzalka A, Pietruszewska W, Hempel D, Sierko E.Krentowska A, et al. Among authors: hempel d.Int Dent J. 2018 Dec;68(6):441-449. doi: 10.1111/idj.12402. Epub 2018 May 28.Int Dent J. 2018.PMID: 29806164Free PMC article.