Bone density at implant sites and its relationship to assessment of bone quality and treatment outcome

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Bone density at implant sites and its relationship to assessment of bone quality and treatment outcome

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Publication Article, peer reviewed scientific
Title Bone density at implant sites and its relationship to assessment of bone quality and treatment outcome
Author(s) Bergkvist, Göran ; Koh, Kwang-Joon ; Sahlholm, Sten ; Klintström, Eva ; Lindh, Christina
Date 2010
English abstract
PURPOSE: To investigate the relationship between bone mineral density (BMD) before implant placement, implant stability measures at implant placement, and marginal bone loss of immediately loaded implants after 1 year in situ. MATERIALS AND METHODS: Consecutively recruited patients received Straumann SLActive implants loaded with fixed provisional prostheses within 24 hours. BMD was measured from computed tomographic images before implant placement. Alveolar bone quality was assessed during surgery. Implant stability-both rotational and as measured with resonance frequency analysis-and marginal bone height were assessed at implant placement and after 1 year. The Pearson correlation coefficient was used to calculate correlations, and significance was considered when P < .05. RESULTS: Twenty-one patients received 137 implants (87 in maxillae and 50 in mandibles). BMD was significantly correlated with bone quality classification in both arches (P < .001). Mean BMD was also significantly correlated with stability values (P < .001). Mean marginal bone loss at implant surfaces differed, but not significantly, at the 1-year follow-up, regardless of BMD values (P = .086) and measured stability (rotational stability P = .34, resonance frequency analysis P = .43) at implant placement. CONCLUSION: Within the limits of this study, it can be concluded that computed tomographic examination can be used as a preoperative method to assess jawbone density before implant placement, since density values correlate with prevailing methods of measuring implant stability. However, in the short time perspective of 1 year, there were no differences in survival rates or changes in marginal bone level between implants placed in bone tissue of different density.
Host/Issue International Journal of Oral & Maxillofacial Implants;2
Volume 25
ISSN 0882-2786
Pages 321-8
Language eng (iso)
Subject(s) Medicine
Research Subject Categories::ODONTOLOGY::Radiological research
Handle http://hdl.handle.net/2043/11284 (link to this page)

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