Influence of surface roughness and shape on microdamage of the osseous surface adjacent to titanium dental implants.
OBJECTIVE
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.


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.
Colgate Australian Clinical Dental Research Centre, Dental School, The University of Adelaide, Adelaide, Australia. mark.bartold@adelaide.edu.au
P M
PM
Bartold
J S
JS
Kuliwaba
V
V
Lee
S
S
Shah
V
V
Marino
N L
NL
Fazzalari
D000818:Animals; D001696:Biomechanical Phenomena; D001857:Bone Matrix / Q000473:pathology / Q000601:surgery; D004396:Coloring Agents; D015921:Dental Implants; D003764:Dental Materials / Q000737:chemistry*; D017267:Dental Prosthesis Design; D007091:Image Processing, Computer-Assisted / Q000379:methods; D008297:Male; D008334:Mandible / Q000473:pathology / Q000601:surgery*; D008856:Microscopy, Fluorescence; D010027:Osteotomy / Q000295:instrumentation; D012394:Rosaniline Dyes; D012756:Sheep; D013314:Stress, Mechanical; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*; D019415:Torque
D004396:Coloring Agents; D015921:Dental Implants; D003764:Dental Materials; D012394:Rosaniline Dyes; C025485:basic fuchsin; D014025:Titanium