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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/41634
- In vitro changes of hydroxyapatite coatings
- Gross, Karlis A.; Berndt, C. C.; Goldschlag, Dale D.; Iacono, Vincent J.
- The stability and degradability of hydroxyapatite coatings on dental implants depends on the dissolution of the individual chemical phases. Hydroxyapatite-coated dental implants exhibit a range of amorphous-phase content. Two tests were conducted to observe the course of coating degradation. The first test showed degradation of both crystalline and amorphous coatings by cracking and dissolution after immersion in Ringer's solution. Concomitant saturation of the implants in the solution modified the coated surface with precipitated crystalline apatite. A second test, intended to replicate the conditions of infection by decreasing pH, illustrated preferred dissolution of the amorphous phase, liberating crystalline segments. It is expected that morphologic changes could influence the rate of bone bonding and therefore could alter or control implant-tissue interactions.
- Publication type
- Journal article
- International Journal of Oral and Maxillofacial Implants, Vol. 12, no. 5 (1997), pp. 589-597
- Publication year
- Amorphous; Apatites; Bacterial infections; Biocompatible materials; Biomaterial; Bone regeneration; Calcium phosphates; Chemistry; Citric acid; Crystalline; Crystallization; Degradation mechanisms; Dental Implants; Dissolution; Durapatite; Hydrogen-ion concentration; Hydroxyapatite; Hydroxyapatite coatings; Immersion; Isotonic solutions; Materials testing; Metabolism; Microstructure; Osseointegration; pH; Physical chemistry; Porosity; Precipitation; Ringer's solution; Solubility; Spatite; Surface properties; Tooth implantation; X-ray diffraction
- Quintessence Publishing
- Publisher URL
- Copyright © 1997 (Please consult authors). Publisher does not officially support author/institution self-archiving of either the postprint (final, revised accepted draft) or published version of full text.
- Peer reviewed