Abstract: An amphibious protection apparatus including wall members, an occupancy space, and an access region is provided. Each of the wall members is foldably and detachably connected to the other wall members. Each of the wall members has an enclosed space that is inflatable by a fluid injected into the enclosed space. The inflation of each of the detachably connected wall members forms a buoyant enclosure of a predefined configuration, which bounces on land and floats on water. The occupancy space is defined by the detachably connected wall members and accommodates the users. The access region defined by opening one of the detachably connected wall members provides access to the occupancy space. The amphibious protection apparatus inflated to form the buoyant enclosure protects the users accommodated within the occupancy space from impacts from different directions on land and water and provides safety to the accommodated users on land and water.

Abstract: A method and system for fabricating a dental prosthesis are provided. High resolution digital scanned images of a patient's oral structures are acquired. Three dimensional (3D) cone beam X-ray images of hard and soft oral tissues are acquired. The scanned images are integrated with the 3D cone beam X-ray images in a 3D space to obtain combined three dimensional images of the oral structures. The occlusal relationship between upper and lower oral structures are digitally simulated using the combined three dimensional images. The dental prosthesis is digitally modeled for planning intra-oral positioning and structure of the dental prosthesis. The digital dental prosthesis model is refined based on simulated force tests performed for assessing interference and retention of the digital dental prosthesis model. A prospective dental prosthesis model is created based on the refined digital dental prosthesis model. The dental prosthesis is fabricated based on a verified prospective dental prosthesis model.