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2. Fundamentals of fixed prosthodontics;Schillingburg,1997
3. Influence of abutment substrate and ceramic thickness on the colour of heat-pressed ceramic crowns;Nakamura;J Oral Rehabil,2002
4. Evolution and use of aluminum oxide single-tooth implant abutments: a short review and presentation of two cases;Heydecke;Int J Prosthodont,2002
5. Alumina ceramic implant abutments used for single-tooth replacement: a prospective 1- to 3- year multicenter study;Andersson;Int J Prosthodont,2001