1. Gahlert M, Gudehus T, Eichhorn S, Steinhauser E, Kniha H, Erhardt W (2007) Biomechanical and histomorpho- metric comparison between zirconia implants with varying surface textures and a titanium implant in the maxilla of miniature pigs. Clin Oral Implants Res 18:662–668
2. Depprich R, Zipprich H, Ommerborn M et al (2008) Osseointegration of zirconia implants compared with titanium: an in vivo study. Head Face Med 4:30
3. Sykaras N, Iacopino AM, Marker VA, Triplett RG, Woody RD (2000) Implant materials, designs, and surface topographies: their effect on osseointegration. A literature review. Int J Oral Maxillofac Implants 15:675–690
4. Heydecke G, Kohal R, Gläser R (1999) Optimal esthetics in singletooth replacement with the re-implant system: a case report. Int J Prosthodont 12:184–189
5. Valentine-Thon E, Schiwara HW (2003) Validity of MELISA for metal sensitivity testing. Neuroendocrinol Lett 24:57–64