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04 I implants1_2010 I content _ implants I editorial 03 Dear Colleagues | Dr Friedhelm Heinemann I case report 06 Safe and effective alternatives to sinus elevation in the atrophic posterior maxilla—Part II | Dr Adel A. Chidiac 12 Dental implants—Treatment options for compromised clinical situations— Part II | Suheil M. Boutros 16 The treatment of toothless jaws | Dr Sven Rinke I research 20 The concept of “platform switching” in implants dentistry—Part I | Virgil Koszegi Stoianov I user report 26 Cross-linked or natural collagen membrane? | Dr Heike Wanner 28 Buccal dehiscence and sinus lift cases | Dr Sérgio Alexandre Gehrke & Dr Giuseppe Maria Famà I feature 32 “Patients’satisfaction towards functional Reconstruction is very high” | Daniel Zimmermann 34 Filipino specialists back up plans for improved implant education 34 CEREC 25th Anniversary Celebration in Las Vegas I meetings 36 7th Conference of theAustralasian Osseointegration Society | Dr Rolf Vollmer & Dr Mazen Tamimi 38 ITI World Symposium 2010 40 International events 2010/2011 I news 42 Congratulations and Happy Birthday to all DGZI- members around the world 44 Manufacturer news I about the publisher 49 | submission guidelines 50 | imprint case report 06 case report 12 research 20 Cover: NobelReplace by Nobel Biocare Holding AG. user report 28 feature 32 meetings 36