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ePaper created 2015-03-06, 09:14:48 | version 1.33.01
38 I I case report _ impression of steeply angulated implants _Various prefabricated angulated abutments were tried on implant 29. An abutment with a 25-degree angle was chosen because it was comparativelyparalleltotheimpressionposton implant 30 (Figs. 3 & 4). _The selected abutment was scanned and an im- pression coping was fabricated from non-pre- ciousmetal(cobalt–chromiumalloy;ZenotecNP, Wieland Dental) using CAD/CAM technology (Fig. 5). The coping was covered with a thin layer of resin (PATTERN RESIN, GC) and small spheroids were modelled coronally, labially and lingually to increase retention (Fig. 6). _The impression post, together with the coping, was placed on implant 30. The 25-degree angu- lated abutment, functioning as an impression post, together with the coping, was placed on implant 29 (Fig. 7). _An impression was taken using a polyether material (Impregum, 3M ESPE; Fig. 8). _Two custom abutments were fabricated, as wellastwoindividualporcelain-fused-to-metal ceramic crowns (Figs. 9 & 10). _The abutments were placed on the implants usingacustom-madekeyandtorquedto35Ncm (Fig. 11). The crowns were then cemented on to the abutments using provisional cement (Figs. 12 & 13). _Conclusion The method described allows for the success- ful restoration of malpositioned implants. However, proper treatment planning should precede any implant placement to guarantee the ideal position and thus eliminate any additional treatment steps._ Editorial note: A complete list of references is available from the publisher. Fig. 13_The panoramic radiograph after placement of the final restorations. cosmeticdentistry 1_2015 Gregory-George K. Zafiropoulos,DDS,Dr.dent., is a specialist in periodontology certified by the German Society of Periodontology. He received his PhD in Periodontology from the Philipp University of Marburg in Germany.HehasbeeninprivatepracticeinDüsseldorf in Germany since 1993 and is a professor at the Università Cattolica del Sacro Cuore in Rome in Italy. Prof.Zafiropoulos has completed postgraduate studies in preventive dentistry (University ofAthens in Greece),periodontology (Saarland University and Philipp University of Marburg in Germany), oral implantology (University of Göttingen/German Association of Dental Implantology) and implant prosthodontics(RWTHAachenUniversityinGermany). He worked as an adjunct professor at the University at Buffalo in the US.He is a diplomate of the International Congress of Oral Implantologists and a specialist in implantology certified by the German Society of Oral Implantology,and has published 130 articles internationally in the fields of periodontology and implantology. Oliver Hoffmann,DDS,MS, Dr.med.dent.,received his dental and doctoral degrees from the University ofWürzburg inGermanyin1997.Hereceived his certificate in Periodontics and his master’s degree from Loma Linda University in the US.Furthermore,he is an associate professor at the Department of Periodontics at Loma Linda University and is an associate along with Prof.Zafiropoulos at apracticeinDüsseldorf.Prof.Hoffmannisadiplomate of theAmerican Board of Periodontology and an active member of theAmericanAcademy of PeriodontologyandtheAcademyofOsseointegration. _contact: Prof.Gregory-George K.Zafiropoulos Blaues Haus Sternstr.61,40479 Düsseldorf Germany zafiropoulos@prof-zafiropoulos.de. www.prof-zafiropoulos.de cosmeticdentistry _about the authors Fig. 13 CDE0115_36-38_Zafiropoulus 26.02.15 10:38 Seite 3 CDE0115_36-38_Zafiropoulus 26.02.1510:38 Seite 3