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Valandro LF, Della Bona A, Antonio Bottino M, Neisser MP.Valandro LF, et al.J Prosthet Dent. 2005 Mar;93(3):253-9. doi: 10.1016/j.prosdent.2004.12.002.J Prosthet Dent. 2005.PMID: 15775926Clinical Trial.