An Investigation of Bonding Mechanisms at the Interface of a Prosthetic Material.
Abstract
This research program has had two primary objectives since its inception: (1) to achieve a direct chemical bond between orthopaedic devices and bone using surface active glass and glass-ceramic materials or coatings, and (2) to develop a scientific understanding of the chemical and mechanical interfacial reactions occurring between materials and bone. This report summarizes progress toward realizing these objectives by reviewing accomplishments of the past eight years and presenting a series of new findings. Results from this past year include establishing the compositional dependence for the bonding of bioglass to bone. When critical concentrations of SiO2, Na2O, CaO, or P2O5 are reached bonding no longer occurs. The absence of bonding may be due to (1) insufficient reactivity resulting in formation of a fibrous capsule, (2) excessive reactivity resulting in dissolution and resorbtion of the implant, and (3) inability to form a glass and control properties. Partial or complete substitution of potassium for sodium does not affect bonding. Substitution of Mg for Ca prevents bonding.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1977
- Accession Number
- ADA053826
Entities
People
- George Piotrowski
- L. L. Hench
- R. W. Petty
Organizations
- University of Florida