Answer:
It's normal
Explanation:
Separators are there to give you enough space, so it's normal if its shifts, for one to two weeks your teeth will move apart slowly until they are far apart enough .. don't mess with it or else the bands will come off.
Im guessing but i would say its 1. Careless
Answer:
The rate of malignancy was 40.0% (543 of 1357) for cases with a single cluster of microcalcifications, 50% (112 of 224) for those with multiple clusters, and 60.0% (303 of 505) for those with dispersed microcalcifications.