
D. Extansion of denture basis edges
E. -Volumetric modeling of denture basis
5. The patient, 70, is made complete removable dentures for the upper and lower jaws. Formulation of artificial teeth produced by the method of Vasiliev. What kind of teeth in the upper denture inappropriately must not touch the glass.
A. -Canines and first molars,
B. -central incisors and first molars,
C. first and second premolars
D. + lateral incisors and second molars,
E. -second premolars and first molars
6. Patient,47, is made complete removable dentures for the upper and lower jaws. The review stage of their construction shows protrusion of the upper lip. What stage was a mistake on?
A. -Determining the height of the lower third of the face
B. + The formation of the vestibular surface of the bite roller,
C. -Forming the occlusal plane
D. -Determination of the height of the upper bite roller
E. -Central occlusion fixation
7. A patient,73, addressed to the prosthodontics clinic at the basis of fracture of complete removable dentures on the upper jaw. The prosthesis was made a year ago, of satisfactory quality. What plastics must be used to fix the prosthesis in this patient.
8. The patient,70, with complete loss of teeth on the upper and lower jaws, is made complete removable dentures. Teeth setting will be conducted according to individual occlusal surfaces (the method of Napadov and Sapozhnikov). What material should rollers be made from for individual occlusal surfaces?.
A. -Adhesive wax
Man must build
Read the text
Man Must Build
Early builders were at first concerned almost entirely with constructing shelters against rain, cold, wild beasts, and human foes. Later, as their civilizations developed, they built temples, council chambers1, bazaars, and palaces. They took a special delight in erecting pyramids, towers, obelisks, coliseums, and the like.
The story of modern structures is the story of the break from the materials of the past. Great and noble structures were built in brick, timber, and particularly in stone, but now steel and concrete have largely replaced them. With these newer materials we can build to greater heights, span wider gaps, and carry heavier loadings than ever before. In many countries today, mountainous masses of steel and concrete are reaching to the skies on a scale undreamed of in earlier times. Engineers have been able to do this because the rise of the science of structures and the advent of steel and concrete have enabled them to conceive and build their buildings and their structures as frameworks.
Before this, the walls of buildings were "bearing" walls: they carried the dead weight and the live load of the structure. The modern large building, however, is essentially a framework or skeleton of steel or concrete that supports the roof and floors. The outside walls are enclosing or "curtain" walls, and often their weight at each floor is also taken by the framework. So the "sidewalk superintendent,'' gaping curiously at the busy scene on a building site, may see the walls rising simultaneously from the ground and midway between roof and ground. Since the walls do not earn' the structure, they are sometimes made of glass or plastic.
When the lift-slab method was first devised, some people described it as a way of constructing a building from the top downward. The description, however fanciful, draws attention to the novelty of the system. The method does, nevertheless, give an excellent illustration of the framework principle employed in most modern buildings.
One begins by constructing the various floors and the roof on top of one another, and around the columns, at ground level. These are then lifted by powerful hydraulic jacks to their correct positions in the structure, and permanently connected to the columns. In the case of a nine-storey building, the columns may be erected in three stages, and the tops of each stage temporarily braced together by the ascending roof. As the roof and higher floors move upward, they leave behind lower floors which, secured to the columns, serve to brace them permanent