Novel adaptations to zinc–silicate glass polyalkenoate cements: The unexpected influences of germanium based glasses on handling characteristics and mechanical properties
| Autor: | S. Kehoe, Daniel Boyd, Brett Dickey |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Time Factors
Materials science Compressive Strength Polyalkenoate Cements Glass Polyalkenoate Cements Biomedical Engineering chemistry.chemical_element Mineralogy Mechanical integrity Germanium Zinc Biomaterials chemistry.chemical_compound Injectable bone Transition Temperature Kyphoplasty Composite material Silicate glass Mechanical Phenomena Silicates Bone Cements Silicate chemistry Glass Ionomer Cements Mechanics of Materials Glass |
| Zdroj: | Journal of the Mechanical Behavior of Biomedical Materials. 23:8-21 |
| ISSN: | 1751-6161 |
| DOI: | 10.1016/j.jmbbm.2013.03.012 |
| Popis: | Aluminum-free glass polyalkenoate cements (GPC) have been hindered for use as injectable bone cements by their inability to balance handling characteristics with mechanical integrity. Currently, zinc-based, aluminum-free GPCs demonstrate compression strengths in excess of 60MPa, but set in c. 1-2 min. Previous efforts to extend the setting reaction have remained clinically insufficient and are typically accompanied by a significant drop in strength. This work synthesized novel glasses based on a zinc silicate composition with the inclusion of GeO2, ZrO2, and Na2O, and evaluated the setting reaction and mechanical properties of the resultant GPCs. Germanium based GPCs were found to have working times between 5 and 10 min, setting times between 14 and 36 min, and compression strengths in excess of 30 MPa for the first 30 days. The results of this investigation have shown that the inclusion of GeO2, ZrO2, and Na2O into the glass network have produced, for the first time, an aluminum-free GPC that is clinically viable as injectable bone cements with regards to handling characteristics and mechanical properties. |
| Databáze: | OpenAIRE |
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