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parallel/bisect-DENH
Question | Answer |
---|---|
WHAT IS PARALLEL TECH? | LONG AXIS OF FILM IS PARALLEL TO LONG AXIS OF TOOTH |
WHAT OCCURS TO ACCOMPLISH PARALLEL TECH? | OFD IS INCREASED, INCREASING MAGNIFICATION & DECREASING DEFINITION |
WHAT IS DONE TO CORRECT THE PARALLEL TECH? | LONG CONE INCREASES OFD, DECREASING MAGN & INCREASING DEFINITION |
IF LACK OF PARALLELISM IS GREATER THAN ____, MUST USE BISECTING | 20 DEGREES |
WHAT DOES PARALLEL TECH REQUIRE THE USE OF? | FILM HOLDER TO STABILIZE FILM |
WHAT IS THE BISECTING TECHNIQUE? | ANGLE IS FORMED BY PLANE OF FILM AND PLANE OF TEETH IS BISECTED |
WHAT OCCURS IF ANGLE IS TOO STEEP? OR TOO LOW? | STEEP=FORESHORTENING, LOW=ELONGATION |
WHAT ARE SOME ADVANTAGES OF PARALLEL TECH? | BETTER DIAGNOSTIC IMAGE, BETTER STANDARIZATION, LESS EXPOSURE TO CRITICAL ORGANS |
WHAT IS THE ARCH POSITIONING FOR PARALLEL TECH? | PARALLEL TO THE FLOOR |
DIMENSIONAL DISTORTION IS CAUSED BY WHAT TECH? | BISECTING |
WHAT ARE SOME DISADVANTAGES OF PARALLEL TECH? | DISCOMFORT OF DEVICES & DIFFICULTY IN ACHIEVING PARALLELISM |
IN THE PARALLEL TECH, WHAT RAY IS PERPENDICULAR TO THE FILM | CENTRAL |
WHAT TECH OFTEN RESULTS IN SUPERIMPOSITION OF STRUCTURES? | BISECTING |
IN BISECTING TECH, OFD IS OFTEN? | DECREASED |