Substituted Hydroxyapatite, Glass, and Glass-Ceramic Thin Films Deposited by Nanosecond Pulsed Laser Deposition (PLD) for Biomedical Applications: A Systematic Review

The deposition of thin films of bioactive materials is the most common approach to improve the bone bonding ability of an implant surface. With this purpose, several wet and plasma assisted deposition methods were proposed in the scientific literature. In this review, we considered films obtained by...

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Bibliographic Details
Published in:Coatings (Basel) 2021-07, Vol.11 (7), p.811
Main Authors: Teghil, Roberto, Curcio, Mariangela, De Bonis, Angela
Format: Article
Language:English
Subjects:
Apatite
Biocompatibility
Biological activity
Biomedical materials
Calcium phosphates
Ceramics
Crystal structure
Crystallinity
Film growth
Glass ceramics
Hydroxyapatite
Ion beams
Literature reviews
Mechanical properties
Nanosecond pulses
Pulsed laser deposition
Pulsed lasers
Silica
Stoichiometry
Substitutes
Thin films
Transplants & implants
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Summary:The deposition of thin films of bioactive materials is the most common approach to improve the bone bonding ability of an implant surface. With this purpose, several wet and plasma assisted deposition methods were proposed in the scientific literature. In this review, we considered films obtained by nanosecond Pulsed Laser Deposition (PLD). Since hydroxyapatite (HA) has composition and structure similar to that of the mineral component of the bone, the initial studies focused on the selection of experimental conditions that would allow the deposition of films that retain HA stoichiometry and crystallinity. However, biological apatite was found to be a poorly crystalline and multi-substituted mineral; consequently, the attention of researchers was oriented towards the deposition of substituted HA, glass (BG), and glass-ceramic (BGC) bioactive materials to exploit the biological relevance of foreign ions and crystallinity. In this work, after a description of the nanosecond ablation and film growth of ceramic materials, we reported studies on the mechanism of HA ablation and deposition, evidencing the peculiarities of PLD. The literature concerning the PLD of ion substituted HA, BG, and BGC was then reviewed and the performances of the coatings were discussed. We concluded by describing the advantages, limitations, and perspectives of PLD for biomedical applications.
ISSN:2079-6412
2079-6412
DOI:10.3390/coatings11070811