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Kniha, Kristian; Gahlert, Michael; Hicklin, Stefan; Brägger, Urs; Kniha, Heinz; Milz, Stefan (2016). Evaluation of Hard and Soft Tissue Dimensions Around Zirconium Oxide Implant-Supported Crowns: A 1-Year Retrospective Study. Journal of periodontology, 87(5), pp. 511-518. American Academy of Periodontology 10.1902/jop.2015.150441
