orthopantomography
/ˌɔːθə(ʊ)pantəˈmɒɡrəfi/Dentistry
noun
A modification of pantomography in which the X-ray beam is kept perpendicular to the jaws, producing a flat image of both jaws and their teeth.
Origin
1950s. From ortho- + pantomography. Compare orthopantomogram, orthopantomograph.