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Published on: February 10, 2014
Histologic evaluation of hydroxyapatite-coated root-form implant retrieved after 7 years in function: a case report
P T Proussaefs1, D N Tatakis, J Lozada
1Center for Prosthodontics and Implant Dentistry, Loma Linda University, CA 92350, USA.
Summary
This study evaluated retrieved hydroxyapatite-coated dental implants after 7 years. The findings indicate the coating resisted degradation, suggesting long-term stability for these root-form implants.
Area of Science:
- Biomaterials Science
- Dental Implantology
- Oral Surgery
Background:
- Root-form dental implants with hydroxyapatite coatings are used for tooth replacement.
- Long-term clinical performance and material stability of these implants require thorough evaluation.
Observation:
- Two non-adjacent hydroxyapatite-coated, root-form implants were retrieved after 7 years of function in the maxillary canine area.
- Clinical assessment showed immobile implants without signs of pathology.
- Radiographic analysis revealed bone close to the implant surfaces with no radiolucency.
Findings:
- Histological examination demonstrated excellent osseointegration, with 84% and 79% bone apposition on the two implants.
- No evidence of hydroxyapatite coating dissolution was observed.
- Bone was in direct contact with the hydroxyapatite coating.
Implications:
- The specific hydroxyapatite coating demonstrated resistance to degradation over a 7-year functional period.
- These findings support the long-term stability and biocompatibility of this type of coated dental implant.
- Further research into hydroxyapatite coating formulations for enhanced implant longevity is warranted.
