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Multi-Scale Modification of Metallic Implants With Pore Gradients, Polyelectrolytes and Their Indirect Monitoring In vivo
Published on: July 1, 2013
Pectin-coated titanium implants are well-tolerated in vivo
Hanna Kokkonen1, Helena Niiranen, Henk A Schols
1Department of Anatomy and Cell Biology, Institute of Biomedicine, University of Oulu, P.O. Box 5000, Oulu 90014, Finland. hanna.kokkonen@oulu.fi
Journal of Biomedical Materials Research. Part A
|November 14, 2009
Summary
Pectin-coated titanium implants show good in vivo tolerability in rats. These novel biomaterials suggest feasibility for future orthopedic and dental applications, with minimal inflammatory reactions observed.
Area of Science:
- Biomaterials Science
- Orthopedic Research
- Dental Implantology
Background:
- Multiform coated titanium implants are crucial in orthopedic and dental surgery.
- Investigating novel coatings is essential for improving implant biocompatibility and reducing inflammatory responses.
- Pectin, a natural polysaccharide, offers potential as a biocompatible coating material.
Purpose of the Study:
- To evaluate the in vivo reactivity and biocompatibility of pectin-coated titanium implants.
- To compare the tissue response to different pectin coatings (MHR-A, MHR-B) and controls (aminated titanium, uncoated titanium).
- To assess the potential of pectin coatings for orthopedic and dental applications.
Main Methods:
- Titanium samples coated with two enzyme-treated apple pectins (MHR-A, MHR-B) were implanted in rat muscle fascia.
- Aminated titanium (AMI) and uncoated titanium (Ti) served as control groups.
- Peri-implant fibrous capsule thickness was measured at 1 and 3 weeks post-implantation to assess inflammatory reactions.
Main Results:
- After 1 week, MHR-B pectin-coated implants showed a thicker fibrous capsule compared to other groups, though not statistically significant except for uncoated Ti.
- After 3 weeks, capsule thickness differences diminished, with MHR-B and Ti implants showing reduced thickness.
- Absence of inflammatory cells (macrophages, giant cells) indicated a stromal, not inflammatory, tissue response.
Conclusions:
- Covalently linked pectin coatings demonstrate in vivo tolerability on titanium implants.
- Pectin-coated titanium implants elicit a minimal stromal response, suggesting good biocompatibility.
- These findings support the clinical feasibility of pectin-coated bone and dental implants.
