click below
click below
Normal Size Small Size show me how
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 |