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Alvarez-Arenal A, Junquera LM, Fernandez JP, Gonzalez I, Olay S.Alvarez-Arenal A, et al. Among authors: olay s.J Oral Rehabil. 2002 Sep;29(9):858-63. doi: 10.1046/j.1365-2842.2002.00923.x.J Oral Rehabil. 2002.PMID: 12366541Clinical Trial.