Atomic layer deposition SiO2 films over dental ZrO2 towards strong adhesive to resin

Construction of Nanostructured Glass-Zirconia to Improve the Interface Stability of Dental Bilayer Zirconia

“…After the SBS test, the fracture patterns were recorded and classified according to the following criteria [ 7 , 16 , 37 ]: Adhesive failure: the failure occurred at interface of zirconia and porcelain. Cohesive failure: the failure occurred inside the porcelain.…”

“…Many attempts have been made to enhance the interfacial stability between zirconia substrate and veneered porcelain. The efforts can be divided into three main categories: introducing an interlayer between zirconia substrate and veneered porcelain, increasing the surface roughness of zirconia, and improving the chemical activity of the zirconia [ 7 , 8 , 9 , 10 ].…”

“…Accordingly, by introducing the component with high chemical activity, the resulting zirconia surface can effectively improve the interfacial stability to the veneering porcelain. The introduction of active ingredients onto zirconia surfaces such as plasma-enhanced chemical vapor deposition (PECVD) [ 21 ], fluorapatite arrays (FA) [ 8 ], nanoscale self-limiting atomic layer deposition (ALD) of silica [ 7 ], have been demonstrated to enhance the bond strength of zirconia-porcelain significantly.…”

Shear Bond Strength to Enamel, Mechanical Properties and Cellular Studies of Fiber-Reinforced Composites Modified by Depositing SiO2 Nanofilms on Quartz Fibers via Atomic Layer Deposition

“…First, it can significantly increase the number of active functional groups on the irregular surface via dense nanofilm deposition, which solves the problem of incomplete reaction due to irregular shapes. 18 , 24 Second, the ALD temperature (150–300°C) is much lower than the high temperature involved in plasma spraying (2700–11,700°C), which does not damage the substrate but maintains its strength. 25 Lastly, the ALD technique can be used to precisely control the thickness of the film at the nanometer level, and the deposited films are uniform and conformal.…”

“…Wang et al prepared silica sol (SS) to modify the quartz fibres, the SEM showed inhomogeneous grafting on fiber surface, which may leading to poor bonding of the substrate material with resin. [18][19][20] Since dental FRCs are usually subject to hundreds of thousands of loading cycles of the masticatory system during use, the ideal compound should undergo sufficient stiffness and toughness maintenance as well as possess long-term fatigue resistance and service performance in wet environments, in order to resist cyclic mechanical loading of tens of thousands of cycles in the oral cavity. 21 Therefore, the fiber surface should be modified such that it does not reduce the strength of the substrate material; furthermore, the material surface should be filled with a sufficient amount of reactive groups, thereby completing the chemical reaction between the fiber and silane coupling agent to form a good interfacial bond between the fiber and resin.…”