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Published on: January 12, 2019
Histologic evaluation of Brånemark clinic oral implants retrieved from grafted sites
Pia Bolind1, Carina B Johansson, Petra Johansson
1Department of Biomaterials/Handicap Research, Institute for Surgical Sciences, The Sahlgrenska Academy at Göteborg University, SE 405 30 Göteborg, Sweden.
Purpose:
The aim of this report is to quantitatively and qualitatively describe the bone tissue response to Brånemark implants retrieved from grafted sites in patients.
Materials And Method:
The material consists of consecutively received Brånemark implants retrieved from grafted sites. Thirty-five of these implants, retrieved from 16 patients, were suitable for the histologic evaluation of undecalcified sections in the light microscope.
Results:
The unloaded implants were mainly lined with soft tissue, and sparse bone-implant contact was observed only in some sections. The loaded implants, with the exception of one implant removed due to mobility, had mature and new bone-implant contact. Resorption of graft through cutting cone structures was detected. Cement lines were found separating bone-like tissue albeit no cellular content and bone tissue with detectable osteocytes.
Conclusion:
In this heterogeneous group of implants from grafted sites, the unloaded implants showed limited bone-implant contact. The autografts showed seemingly mixed viability as judged by the cell content in the osteocyte lacunae and cement lines separating areas with filled and empty lacunae.
