to study this possible relationship , xeroradiographic lateral cephalograms were made of eighty class i ( angle ) and sixty-four class ii , division 1 ( angle ) malocclusions to obtain reliable measures of the epipharyngeal lymphoid tissue , the nasopharyngeal airway , the nasopharynx , and certain cephalometric landmarks .
C0399523
class i
C0024636
malocclusions