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14 [1] Heydecke G., Zwahlen M. , Nicol A., Nisand D., Payer M., Renouard F., Grohmann P.,Mühlemann S., Joda T., What ist he optimal number of implants for fixed reconstrations: a systematic review. Clin Oral Implants Res 2012;23 Suppl 6:217-228. [2] Ackermann KL, Kirsch A., Nagel R., Neuendorff G. Mit Backward Planning zielsicher therapieren. Teil 1 Teamwork 2008;4:466-484. [3] Schley JS. Terheyden H, Wolfart S., Implanatprothetische Versorgung des zahnlosen Oberkiefers. S3-Leitlinie. AWMF- Tegisternr. 083-010. DZZ 2013;68:28-41. [4] Araújo MG, Silva CO, Misawa M, Sukekava F, Alveolar socket healing: what can we learn? Periodontol 2000. 2015 Jun;68(1):122-34. doi: 10.1111/prd.12082. [5] Steiner AE, Schmidinger S, Schnittverläufe am resorbier- ten Kiefer, Orale Implantologie, Quintessenz Berlin 1977: 2. [6] Nisand D, Renouard F., Short implant in limited bone volume. Periodontol 2000. 2014 Oct;66(1):72-96. doi: 10.1111/prd.12053. [7] J. Choukroun et al., Platelet-rich fibrin (PRF): A second- generation platelet concentrate. Part IV: Clinical effects on tissue healing, Oral Surg Oral Med Oral Pathol Oral Radiol Endod 2006;101:E56-60. [8] Schweiger J., Beuer F., Stimmelmayr M., Edelhoff D. Wege zum Implantatabutment. dental dialogue 2010;11:76-90. [9] Linkevicius T, Vindasiute E, Puisys A, Linkeviciene L, Mas- lova N, Puriene A. The influence of the cementation margin position on the amount of undetected cement. A prospecti- ve clinical study. Clin oral Implants Res. 2013;24(1):71-6. [10] Kutkut A, Abu-Hammad O, Mitchell R. Esthetic Consi- derations for Reconstructing Implant Emergence Profile Using Titanium and Zirconia Custom Implant Abutments: Fifty Case Series Report. J Oral Implantol. 2013 Oct 31. [Epub ahead of print] [11] Schmitter, M., Mussotter, K., Rammelsberg, P., Gabbert, O., Ohlmann, B.: Clinical performance of long-span zirconia frameworks for fixed dental prostheses: 5-year results. J Oral Rehabil 39, 552-557 (2012). [12] Kajiwara N1, Masaki C, Mukaibo T, Kondo Y, Nakamoto T, Hosokawa R. Soft tissue biological response to zirconia and metal implant abutments compared with natural tooth: microcirculation monitoring as a novel bioindica- tor. Implant Dent. 2015 Feb;24(1):37-41. doi: 10.1097/ D.0000000000000167. LITERATURE Fig. 35 and 36: The radiograph of the overall reconstruction with a satisfactory full ceramic restoration. After the cementing and a final functional check, a happy patient left the clinic. the implant regions is eliminated. Keratin- ized gingiva and thickening of the soft tissue can be achieved using appropriate surgical flap techniques. Familiarity with surgical techniques and the use of biocompatible materials and their processing play a considerable role in ensuring a successful final outcome. Zir- conium oxide has good mechanical prop- erties in addition to its precise industrial fabrication process (CAD/CAM technique). Numerous in vitro and in vivo studies have been published on this subject and con- firm the outstanding biocompatible prop- erties of the material [10, 11]. Because of the biologically inert character of the ma- terial, corrosion does not occur when it comes into contact with other metals or alloys in the oral cavity. As a result of the lack of toxicity of the material in a wide range of cells, studies have confirmed that zirconium oxide plays an active role in soft tissue healing and attachment, thus min- imizing the accumulation of plaque and bacteria [12]. In addition to successful osseointegration of the implants, close adaptation of the soft tissue to the suprastructure is impor- tant for the long-term clinical success of the implant restoration. CASE STUDY