Structural and Mechanical Investigation of Class I Biomimetic Composite Dental Filling by X-ray Computed Tomography, Scanning Electron Microscopy, and Microtensile Bond Strength Testing

Nowadays, short fiber-reinforced composites are broadly used in modern restorative dentistry. The tensile strength, Young's modulus, density, and polymerization shrinkage of these materials developed to mimic the original teeth tissue best. shrinkage, however, will occur during any process, which can cause residual stress gap formation between tooth filling. These lead propagation cracks, reduction adhesive bond or even separation restoration. During this research, a biomimetic dental restoration was created on surgically removed third molar with EverX short-fiber reinforced composite by bulk-filling technique. restored sample examined X-ray computed tomography obtain 3D image whole volume adhesive, material discontinuities, internal cavities were determined. A cut-out slice further investigated scanning electron microscopy examine layer thickness, formation, quality Finally, microtensile specimens machined evaluate strength dentin filling material.