You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is The radiopacity that frequently obliterate the root apices of maxillary molars is and explain in detail?
FigureA  shows  the  inferior  border  of  the  zygomatic  process  of  the  maxilla  over the  molars.  This  structure  lies  buccal  to  the  teeth  and  appears to  move  mesially  as  the  x-ray  beam  is  oriented  more  from the  distal.  Similarly,  as  the  angulation  of  the  beam  is  increased vertically,  the  zygomatic  process  is  projected  occlusally  over the  teeth.