Marginal Bone Levels Around Maxillary Implants Supporting Overdentures or Fixed Prostheses: A Comparative Study Using Detailed Narrow-Beam Radiographs
Sigvard Palmqvist, DDS, PhD/Katarina Sondell, DDS/Barbro Swartz, DDS/Björn Svenson, DDS, PhD
PMID: 8666455
The issue of changes in marginal bone levels around maxillary implants supporting overdentures has been studied very little because of radiographic difficulties when using conventional intraoral techniques. The present study used detailed narrow-beam radiography, which offers excellent opportunities to depict implants and the surrounding bone in severely resorbed maxillae. Marginal bone levels around implants in patients with overdentures were compared to corresponding bone levels in a group of matched control patients with fixed prostheses supported by osseointegrated implants. No statistically significant difference in marginal bone height was noted between the groups. This finding is not in accordance with an earlier report on continuous loss of marginal bone around many maxillary implants supporting overdentures. (INT J ORAL MAXILLOFAC IMPLANTS 1996;11:223-227)
Key words: implants, marginal bone, maxilla, overdenture, radiography
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