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An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
Published on: February 10, 2014
No evidence to indicate topographic dependency on bone formation around cp titanium implants under masticatory
1Institute of Clinical Materials, 1-22-27 Tokocho, Moriguchi, Osaka, 570-0035, Japan. icm@sea.plala.or.jp
Journal of Materials Science. Materials in Medicine
|August 10, 2006
Summary
Surface roughness of titanium implants did not significantly impact bone growth in vivo. Functional biting loads may mask the effects of surface topography on osteogenesis, suggesting clinical conditions influence healing potential.
Area of Science:
- Biomaterials Science
- Orthopedic Surgery
- Dental Implantology
Background:
- In vitro studies demonstrate that titanium surface topography influences osteogenesis (bone formation).
- Key cellular activities like adhesion, proliferation, and differentiation are affected by surface features.
- Osteogenic stem cells and bone formative cells show varied responses to different topographies in lab settings.
Purpose of the Study:
- To investigate the in vivo effect of titanium surface roughness on bone growth around dental implants under functional loading.
- To determine if in vitro findings on topographic dependency translate to clinical conditions with masticatory forces.
- To assess bone-to-implant contact, bone occupancy, and bonding strength across varying surface roughness parameters.
Main Methods:
- Utilized commercially pure (cp) titanium dental implants with a defined range of surface roughness (Ra, Rz, Rmax, Sm).
- Evaluated bone growth parameters including bone-to-implant contact, bone occupancy, and bone bonding strength at the implant-bone interface.
- Subjected implants to masticatory loading conditions in an in vivo model.
Main Results:
- No significant differences in bone contacts, bone occupancies, or bone bonding strengths were observed among implants with varying surface roughness (Ra 0.4-1.9 µm).
- The in vivo results contrasted with in vitro findings regarding the topographic dependency of osteogenesis.
- Functional biting load appeared to override the influence of surface topography on bone healing.
Conclusions:
- In vivo, the topographic dependency of osteogenesis around titanium implants under masticatory loading is not significant within the tested roughness range.
- Clinical conditions, particularly functional loading, can mask the effects of surface topography on bone healing and implant osseointegration.
- Further research may be needed to understand the interplay between surface properties and dynamic loading in bone regeneration.
