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Updated: May 25, 2026
An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
Published on: February 10, 2014
Bone level change of extraction sockets with Bio-Oss collagen and implant placement: a clinical study
Friedhelm Heinemann1, Istabrak Hasan, Christian Schwahn
1Department of Prosthodontics, Gerodontology and Biomaterials, University of Greifswald, Rotgerberstr. 8, 17475 Greifswald, Germany. FriedhelmHeinemann@web.de
Aims:
To compare the reaction of the alveolar bone to the preservation of the extraction socket by Bio-Oss Collagen with and without combination of implant treatment. To evaluate whether early implant insertion 8-10weeks thereafter could be a suitable time point for long term bone stability around the implant.
Methods:
A total of 25 patients were divided into three groups: The first group (seven patients) received Bio-Oss Collagen after extraction and 8-10weeks later an implant, the second group (eight patients) received only Bio-Oss Collagen without implantation thereafter, while the third group was considered as a control (eleven patients), where the sockets healed without any treatment. The change in the vertical bone level of the alveolar crests were measured from panoramic radiographs and statistically analysed.
Results:
Bone level change was significantly less for Group 1 than Group 3 (P<0.001), while was not significantly different for Group 2 and Group 3 (P=0.23). However, the rate of bone level change per year was statistically smaller for Group 1 compared to Group 3 (P=0.019) and as well as for Group 1 than for Group 2 (P=0.003), whereas the change per year was not significantly different for Group 2 vs. Group 3 (P=0.122).
Conclusion:
Bone level preservation of extraction sockets using Bio-Oss Collagen with implantation is significantly better compared to using Bio-Oss Collagen only and untreated sockets. Implant insertion 8-10weeks after extraction is a suitable time point after socket augmentation.
