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Issue: 02/2013
There are differences

There are differences

Were you at the record-breaking dental show in Cologne, Germany? According to the final report of the Koelnmesse 125,000 visitors were – in theory – able to view 2058 exhibitors and their products and services from 56 countries. But some would only have been there for the “show” ranging from the harmless throwing of T-shirts printed with the company logo into the crowd to other questionable presentations.

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Issue: 03/2013
Implantological Fall

Just a while back a good friend and colleague gave me a book by Philippe D. Ledermann. Unlike probably expected, it was not a textbook on medical dentistry covering immediate loading and restoration of implants but part three “Fall” of his autobiographical novel entitled “The Paper Parents” (“Die Papiereltern”). The first two parts “Fall” and “Summer” were published more than ten years back and quickly made it into the bestseller lists for novels. Ledermann is not only considered a contemporary witness of a whole chapter of implantology history, but also one of its most formative protagonists. During his professional life he has had to cope with so many doubts about the paradigm shift concerning implant-loading that his memories on the topic span three volumes of a book (1). Of course I’m particularly interested in the implantology chapters where an absurd status image of the dental profession of the time is presented which almost led to him being struck off. Ledermann describes the early days of implantology with all its tortuous paths and the very personal hostility he experienced. Those readers who are only mildly interested in fiction and poetry will find at least in these chapters a vital description of the critical area of conflict between university lecturers and general dentists.

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Issue: 01/2013
Dear members of the DGI, dear readers of the ZZI,

I’d like to begin with the 2012 joint congress of the three sister societies DGI (German Society for Implantology), ÖGI (Austrian Society of Implantology) and SGI (Swiss Society for Implantology) in Bern, Switzerland, which as every year was held on the first weekend of Advent. We were very pleased to note that our carefully calculated estimate of 1,000 participants was comfortably exceeded. We were able to welcome 1,473 participants. The majority – 54 % – came from Germany, 42 % from Switzerland and 4 % from Austria. From many individual discussions and feedbacks we know that the vast majority of participants considered the congress in Bern a highly successful specialist meeting in an excellent ambience, which we will remember positively for a very long time.

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Issue: 01/2013
“Research creates knowledge – knowledge creates the future”

Our DGI (German Society for Implantology) has started 2013 under a positive omen and we all have good reason to look forward to the future. The DGI under the past presidency of Prof. Dr. Dr. Hendrik Terheyden has laid a solid basis for the future, which should now be strengthened and expanded.

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Issue: 04/2013
Facing the future together via interfacial dialogs

Facing the future together via interfacial dialogs

„Facing the future together“ – is the motto of this year’s congress at Frankfurt/Main, Germany, a highlight which traditionally rounds off the “Implantology year”.

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Issue: 03/2013 - F. M. Maier
Reconstruction of a severely atrophic maxilla by extensive augmentation and Guided Surgery

Extensive augmentations enable the surgeon to build up the basis for fixed implant supported restorations even in cases with large bony defects due to periodontal disease. A less invasive alternative to grafting bone from the iliac crest involves augmentation with allogenic donor bone. The three-dimensional augmentation and implant planning based on CBCT data is an important aid in total reconstructions. Guided surgery allows not only a more gentle approach, but especially exact prosthetic positioning of the implants.


Maier FM: Reconstruction of a severely atrophic maxilla by extensive augmentation and Guided Surgery. Z Zahnärztl Implantol 2013;29:230–242

DOI 10.3238/ZZI.2013.0230–0242

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Issue: 04/2013 - M. Korsch - W. Walther - A. Bartols
Bone block grafting at a distance from the alveolar ridge for the threedimensional reconstruction in cases of severe lateral and vertical bone atrophy

Aim: This case report explains the implantological procedure for the treatment of severe lateral and vertical bone atrophy of an interdental edentulous ridge segment in the maxilla. The indication of using a special bone block grafting technique for the threedimensional reconstruction of the alveolar ridge is described.

Summary: In the case presented here, the first upper left molar had to be extracted in 2010 due to an abscess in connection with a vertical root fracture. In 2011 the alveolar ridge was reconstructed by bone block grafts harvested from the retromolar region. The bone block grafts were fixed orally and facially at a distance from the alveolar ridge by means of osteosynthesis screws. The space created between the 2 block grafts was filled up with particulate autogenous bone and bone substitute material. Three and a half months after augmentation, 2 Astra Osseo Speed implants were inserted.


Korsch M, Walther W, Bartols A: Bone block grafting at a distance from the alveolar ridge for the threedimensional reconstruction in cases of severe lateral and vertical bone atrophy. Z Zahnärztl Implantol 2013;29:321?329

DOI 10.3238/ZZI.2013.0321?0329

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Issue: 01/2013 - E. Esser - C. Schmidt
Frame technique using an allogenic bone matrix for simultaneous implantation and horizontal bone augmentation

Introduction: So far there is no long-term data available which show superiority in the use of a distinctive bone augmentation technique. Therefore, this study reports about first experiences with an allogenic bone matrix for the simultaneous augmentation of horizontal bone deficits in combination with the simultaneous insertion of dental implants.

Material and methods: In 26 patients (14 male, 12 female, average age 57,2 years) with an horizontal bone width of ? 4mm in an area of at least three adjacent teeth, 106 dental implants (Type: NobelActive) were inserted in 38 locations. A demineralized allogenic bone matrix in combination with allogenic cancellous bone was used for the augmentation of the horizontal bone deficit. After a healing time of 4 to 6 months, the implants were expired and loaded with a fixed or removable denture.

Results: 106 implants were inserted, 86 of them were loaded. 5 implants lacked of osseointegration. Healing complications were observed in one patient. The histologic inspection showed a narrow zone of newly formed bone linked to the allogenic transplant. The gain in bone was stable und showed no resorption tendency so far.

Discussion: The use of allogenic bone for the augmentation of horizontal bone deficits shows a favorable healing tendency and a stable gain in bone volume. These results should be evaluated as first experiences in the sense of a pilot study. The procedure should be limited to the therapy of horizontal bone defects


Esser E, Schmidt C: Frame technique using an allogenic bone matrix for simultaneous implantation and horizontal bone augmentation. Z Zahnärztl Implantol 2013;29:49?57. DOI 10.3238/ZZI.2013.0049?0057

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Issue: 01/2013 - M. Merli - M. Moscatelli - A. Mazzoni - G. Mariotti - M. Nieri
Lateral bone augmentation applying different biomaterials

Introduction: This paper describes the treatment of horizontal osseous defects around implants in a one-stage split-mouth approach in a middle-aged female patient.

Method and Material: The same identical reconstruction technique was performed in both surgical sites using different biomaterials: a ?-tricalciumphosphate (Ceros TCP granules) grafting material and a porcine, collagen pericardium resorbable membrane (Remotis) were employed on the test side and a deproteinized, bovine bone matrix (Bio-Oss) and a porcine, collagen resorbable membrane (Bio-Gide) on the control side. Bone substitutes were mixed with autologous bone (approximately 10%) harvested during implant insertion procedures.

Results: Substantial bone regrowth was evident in both ridges, although only the test side underwent complete regeneration. Histological examination of the regenerated areas showed the presence of mature bone organized around particles of biomaterial during the incorporation phase.

Conclusion: Both therapeutic approaches have proved favorable in terms of covering the initially exposed implant threads.


Merli M, Moscatelli M, Mazzoni A, Merli M, Mariotti G, Nieri M: Lateral bone augmentation applying different biomaterials A clinical and histological evaluation of a case report. Z Zahnärztl Implantol 2013;29:70-79. DOI 10.3238/ZZI.0070-0079

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Issue: 01/2013 - F. Petschelt - M. Millian - T. Kraußeneck
Analysis of the precision of implant templates

Aim: The aim of this study was to evaluate the precision of holes drilled in implant templates, which were analyzed with cone beam computed tomography (CBCT) using suitable planning software.

Material and methods: 40 templates that had been used clinically to enable successful treatment were studied. 17 of the analyzed templates were fabricated with the Med3D program (C. Hafner GmbH, Pforzheim) and 23 templates were made with the ExpertEase software of Dentsply Friadent GmbH. The Scanora Soredex was used for CBCT. Comparative measurements were made on a plaster model with silicone key using an individually fabricated appliance. 3 holes were drilled in each template by 3 different persons. The resulting data were compared to within less than a millimeter.

Results: Maximum deviations of 2.0mm in the horizontal dimension and 1.0 mm in the vertical dimension were found. Much smaller deviations with more precise positions were found with the ExpertEase version compared with the Med3D-assisted procedure.

There were no significant differences in drilling precision between an experienced implantologist and a dental nurse without any practical experience on patients.

Conclusion: With observation of the basic principles of implantology and use of planning software for template-guided surgery, exact implant placement to within less than a millimeter is possible, even in the most demanding situations.


Petschelt F, Millian M. Kraußeneck: Analysis of the Precision of Implant Templates. Z Zahnärztl Implantol 2013;29:58?69. DOI 10.3238/ZZI.2013.0058?0069

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