Related Experiment Video
Updated: Aug 21, 2026
Quasistatic Mechanical Testing for Computer-Aided Design and Manufacturing Occlusal Veneers Cemented to Milled Dentin Analog Material
Published on: December 20, 2024
Preparation of a mechanically biomimetic polymer-infiltrated ceramic and bond test by digital image correlation
Mingyang Chen1, Ruyi Li1, Shihua Huang1
1State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University.
Abstract:
This study developed a polymer-infiltrated ceramic network (PICN) with dentin-like mechanical properties for tooth restoration, and explored its internal stress transmission mechanisms under load using digital image correlation (DIC). A porous sodium aluminum silicate powder scaffold was fabricated and vacuum-infiltrated with resin to produce experimental PICN (EXP). The mechanical properties of EXP, Enamic, Emax, zirconia were assessed using Vickers hardness and three-point bending tests, shear bond tests, combined with DIC to observe their corresponding stress distribution and transmission path. The EXP with 30% porosity exhibited a flexural strength of 192.90 MPa, a shear bond strength of 23.35 MPa, a Vickers hardness of 2.75 GPa and an elastic modulus of 8.19 GPa which is comparable to demineralized dentin 8.47 GPa. The DIC revealed a more homogeneous strain distribution in the EXP compared with other materials, indicating a promising alternative for CAD/CAM dental restorations.
