In Situ Formation of Calcium Zirconate Particles on the Surface of High-Translucent Zirconia: A New Way to Strongly Improve Its Bonding Properties
Source abstract
Abstract
High-translucency zirconia (HTZ) has superior esthetic properties, but its unreliable resin bonding limits minimally invasive anterior restorations. An in situ surface modification was developed to synthesize CaZrO3 particulates on pre-sintered HTZ for enhanced bonding durability. HTZ specimens were randomized into control (Zr-c) and calcium-modified (Zr-Ca) groups; Zr-Ca was treated with NaF/HCl mixture, calcium chloride glycerol solution, NaOH incubation (80 °C, 2 h), and sintering. Surface characteristics were characterized by SEM/EDS, AFM, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and FTIR. Flexural strength was tested via three-point bending; shear bond strength (SBS) was evaluated immediately and after 5000 thermocycles with resin cements (with/without 10-MDP). Zr-Ca showed uniform surface particulates, increased roughness, enhanced wettability, and surface Ca; XRD/FTIR/XPS confirmed CaZrO3 and Ca-O-P species (after MDP). Zr-Ca with 10-MDP-containing resin adhesive had significantly higher SBS before/after aging (predominantly mixed failures), with flexural strength within clinical limits. In situ CaZrO3 formation on HTZ strengthens MDP-mediated resin bonding and thermocycling resistance while preserving mechanical integrity, providing a feasible strategy for durable adhesion.
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Research context
OpenAlex topics: Dental materials and restorations · Bone Tissue Engineering Materials · Endodontics and Root Canal Treatments
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, China
National Center of Stomatology, Beijing 100081, China
National Clinical Research Center for Oral Diseases, Beijing 100081, China
National Engineering Research Center of Oral Biomaterials and Digital Medical Devices, Beijing 100081, China
Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
Beijing Key Laboratory of Biomaterials for Oral Diseases, Beijing 100081, China
Beijing Key Laboratory for Intelligent Biomanufacturing and Regeneration of Craniofacial Tissues, Beijing 100081, China
NHC Key Laboratory of Digital Stomatology, Beijing 100081, China
NMPA Key Laboratory for Dental Materials, Beijing 100081, China
Center of Stomatology, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua Medicine, Tsinghua University, Beijing 102218, China
Department of Dental Esthetics, Binzhou Medical University Affiliated Yantai Stomatological Hospital, Yantai 264000, China
First Clinical Division, Peking University School and Hospital of Stomatology, Beijing 100081, China
Funding
Program for New Clinical Techniques and Therapies of Peking University School and Hospital of Stomatology · Beijing Natural Science Foundation
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