Final answer:
The dependent TMJ is projected differently in tilted views due to gravity and head positioning, which affects the mandible's orientation and the joint's appearance in images.
Step-by-step explanation:
The dependent TMJ in tilted-up lateral or sagittal oblique views is projected differently compared to the non-dependent TMJ due to the effects of gravity and positioning. Movement at the TMJ involves both gliding and hin_ge motions that are important for various functions like opening and closing of the mouth. When a patient's head is tilted, the TMJ on the elevated side (non-dependent) may appear to shift position relatively due to changes in the spatial orientation of the mandible and gravitational force acting on the structures of the joint. In diagnostic imaging, the radiologic technologist must be mindful of these positional changes to correctly interpret the TMJ's relationship on the dependent versus non-dependent sides.