Femtosecond Laser Preparation and Biomineralizability of ZrO₂ Ceramic Woven Surfaces

Abstract

Improving the bio‐mineralization of the ZrO2 ceramics surface is of great significance for its clinical application in dentistry. A Femtosecond laser was used to prepare micro‐nano structures on the surface of the ZrO2 ceramics. The contact angle, micro‐morphology, and chemical composition of the ZrO2 ceramics surface were characterized using a contact angle measurement instrument, scanning electron microscope, and energy dispersive spectroscopy. The changes of surface wettability under different geometric features of micro‐pits were analyzed, and the bio‐mineralization of different micro‐pit wettability surfaces was evaluated through hydroxyapatite (HA) deposition experiments. The results showed that the deposition effect of the femtosecond laser‐textured surface is better than that of the original surface. Femtosecond laser processing increases the surface area and roughness of the material, providing additional nucleation sites for HA, which is conducive to its growth and improvement of deposition efficiency. HA deposited on hydrophobic surfaces consistes of a small amount of rod‐shaped and spherical particles.While the deposition effect on hydrophilic surfaces is greatly improved, the deposited particles on hydrophilic surfaces are rod‐shaped and stacked into spherical shapes, growing into pieces after combining, and the particle number increases rapidly, the density increases, and they completely covers the textured surface. The study provids a theoretical reference and experimental basis for improving its bio‐mineralization.This article is protected by copyright. All rights reserved.