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Influence of surface roughness and shape on microdamage of the osseous surface adjacent to titanium dental implants
P M Bartold1, J S Kuliwaba, V Lee
1Colgate Australian Clinical Dental Research Centre, Dental School, The University of Adelaide, Adelaide, Australia. mark.bartold@adelaide.edu.au
Objectives:
To assess the relationship between smooth and roughened implant surfaces of straight and narrow configurations with respect to microdamage of the bone surface during placement of dental implants.
Materials And Methods:
Straight and tapered, rough and smooth surface Nobel Biocare implants were placed into sheep mandibles. Microdamage within the bone adjacent to the implant surface was quantitated using a semi-automated digitized histomorphometric method.
Results:
Independent of implant type, microdamage, microcracks, cross-hatch damage and diffuse damage were significantly higher close to the implants compared with far from the implants. Microcracks and cross-hatch damage were higher for the rough cylindrical implants than all the other implant types.
Conclusions:
Insertion of a rough cylindrical implant type results in an increased fraction of microdamaged bone matrix in comparison to rough tapered, smooth cylindrical and smooth tapered implants.
