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Title: Effect of constant strain rate, composed of varying amplitude and frequency, of early loading on peri-implant bone (re)modelling
Authors: De Smet, E ×
Jaecques, Siegfried
Jansen, J J
Walboomers, F
Vander Sloten, Jos
Naert, I E #
Issue Date: Jul-2007
Series Title: Journal of Clinical Periodontology vol:34 issue:7 pages:618-624
Abstract: AIM: Examine the effect of varying components of strain rate -- amplitude versus frequency -- while maintaining a constant strain rate of early controlled mechanical loading on implant stability, peri-implant bone mass and bone-to-implant contact. MATERIAL AND METHODS: Three groups of guinea-pigs received TiO2 -blasted implants in both tibiae. One week after installation test implants were loaded 5 days/week during 4 weeks. The contra-lateral implants were the unloaded controls. Strain rate was kept constant (1600 micro epsilon/s), while amplitude and frequency were varied per group. Implant stability was followed by resonance frequency analysis. Animals were sacrificed, and ground sections were prepared to rate bone-to-implant contact and bone mass. RESULTS: All implants (n=78) integrated uneventfully. A significant positive effect (p=0.03) of early loading on bone mass was observed in the distal medullar cavity. A significant difference in bone mass between test and control implants was evidenced between the groups (p=0.03 and 0.04). A significant increase in implant stability and bone-to-implant contact could not be shown. CONCLUSIONS: Early controlled stimulation of peri-implant bone is related to amplitude/frequency and not to strain rate as such, considering a constant stimulation time. An increase of bone mass around early-loaded implants was shown. This cortical bone model is most sensitive to low-frequency/high-amplitude stimulation.
URI: 
ISSN: 0303-6979
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Prosthetics
Biomechanics Section
Biomaterials - BIOMAT
× corresponding author
# (joint) last author

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