BACKGROUND The ferrule effect in root treated teeth requiring cast posts and cores has been shown to greatly improve fracture resistance. Studies have also shown that in the case of a cast post and core, the longer the ferrule, the greater the fracture resistance. However few studies have considered the effect of different ferrule designs on prefabricated post and composite core systems. AIM ...

This paper presents an inverse thermal modeling technique to determine the core losses from temperature rise inside transformer core. For this purpose, initially, a customized printed circuit board (PCB) with sensors is used measure rise. Afterward, 3D magneto-thermal forward model developed validate The accuracy of checked by comparing simulated and experimental measurements for different supp...

This article describes a simple procedure of recording contours of an existing cast post and core that needs to be reconstructed, using a polyvinyl siloxane material as a matrix for fabrication of a new cast post and core in a relatively short time with reduced cost. The procedure involves the use of an acrylic resin material under pressure, which minimizes void formation in the post-and-core p...