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Effect of implant design and bioactive glass coating on biomechanical properties of fiber‐reinforced composite implants
Author(s) -
Ballo Ahmed M.,
Akca Eralp,
Ozen Tuncer,
Moritz Niko,
Lassila Lippo,
Vallittu Pekka,
Närhi Timo
Publication year - 2014
Publication title -
european journal of oral sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.802
H-Index - 93
eISSN - 1600-0722
pISSN - 0909-8836
DOI - 10.1111/eos.12133
Subject(s) - osseointegration , implant , materials science , dentistry , coating , biomedical engineering , orthodontics , composite material , medicine , surgery
This study aimed to evaluate the influence of implant design and bioactive glass ( BAG ) coating on the response of bone to fiber‐reinforced composite ( FRC ) implants. Three different FRC implant types were manufactured for the study: non‐threaded implants with a BAG coating; threaded implants with a BAG coating; and threaded implants with a grit‐blasted surface. Thirty‐six implants (six implants for each group per time point) were installed in the tibiae of six pigs. After an implantation period of 4 and 12 wk, the implants were retrieved and prepared for micro‐computed tomography (micro‐ CT ), push‐out testing, and scanning electron microscopy analysis. Micro‐ CT demonstrated that the screw‐threads and implant structure remained undamaged during the installation. The threaded FRC / BAG implants had the highest bone volume after 12 wk of implantation. The push‐out strengths of the threaded FRC / BAG implants after 4 and 12 wk (463°N and 676°N, respectively) were significantly higher than those of the threaded FRC implants (416°N and 549°N, respectively) and the nonthreaded FRC / BAG implants (219°N and 430°N, respectively). Statistically significant correlation was found between bone volume and push‐out strength values. This study showed that osseointegrated FRC implants can withstand the static loading up to failure without fracture, and that the addition of BAG significantly improves the push‐out strength of FRC implants.