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Top factors leading to dental implant abutment/implant fixture misfit: The dreaded macrogap

from Perio-Implant Advisory

Because dental implant componentry is composed of machined parts, implant abutments and fixtures are designed to be mated with minimal vertical misfit between abutment and platform. Brånemark's original publications considered a misfit of 10 microns or less to be acceptable, while some authors have suggested that misfits of 100-150 microns are clinically acceptable. This "microgap" needs to be evaluated, however, as literature has suggested that peri-implant bacteria can colonize a gap as small as 1 micron. more

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