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Fabricación de bloques bifásicos de hidroxiapatita/sulfato de calcio mediante transformación hidrotermal de fase

Sunarso Sunarso¹, Gita Andani Pradana², Syifaa Sagakirana²

¹Department of Dental Materials Science, Faculty of Dentistry, Universitas Indonesia, Jakarta, Indonesia.

European journal of dentistry

|February 10, 2026

Resumen

En este estudio se convirtieron bloques de yeso en bloques bifásicos de hidroxiapatita/sulfato de calcio (HA/CS) mediante tratamiento hidrotermal. Los bloqueos HA/CS resultantes muestran una solubilidad reducida y una citotoxicidad aceptable para potenciales aplicaciones biomédicas.

Área de la Ciencia:

Ciencia de los Biomateriales Ciencia de los Biomateriales.
Ingeniería de materiales Ingeniería de materiales.
La biomineralización es la biomineralización.

Sus antecedentes:

Los compuestos de hidroxiapatita y sulfato de calcio (HA/CS) son biomateriales prometedores.
El desarrollo de métodos de fabricación eficientes para HA/CS es crucial para su aplicación.
El yeso (dihidrato de sulfato de calcio) es un material precursor abundante y rentable.

Objetivo del estudio:

Para fabricar bloques bifásicos HA / CS de yeso utilizando conversión hidrotermal parcial.
Caracterizar la composición de fase, la resistencia mecánica, la solubilidad y la citotoxicidad de los bloques HA/CS sintetizados.

Principales métodos:

Los bloques de yeso fueron tratados hidrotermalmente en una solución de Na3PO4 a 150°C durante diferentes períodos de tiempo (6, 12, 24 horas).
La composición de la fase se analizó mediante difracción de rayos X.
Se evaluaron la resistencia a la tracción diametral (DTS), la solubilidad en el tampón Tris-HCl y la citotoxicidad in vitro en cultivos celulares.

Principales resultados:

El tratamiento hidrotermal produjo con éxito HA/CS bifásico con aumento del contenido de hidroxiapatita con el tiempo.
Los bloques de HA / CS exhibieron DTS significativamente reducido (0,5-0,7 MPa) en comparación con el yeso puro (2,06 MPa).
La solubilidad se redujo en los bloques HA/CS (la más baja fue de 94,70 mg/L para 24-HA/CS) en comparación con el yeso (206,15 mg/L), y las pruebas de citotoxicidad mostraron una viabilidad celular superior al 70%, cumpliendo con los estándares ISO.

Conclusiones:

La conversión hidrotermal parcial del yeso es un método eficaz para producir bloques bifásicos HA/CS.
El proceso permite una composición de fase sintonizable, lo que conduce a una solubilidad reducida y una citotoxicidad aceptable.
Estos bloques HA/CS demuestran potencial para su uso en la regeneración ósea y otras aplicaciones biomédicas.

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