Reduction in crestal bone radiographic density due to excessive vertical angulation.
D000539:Alveolar Process / Q000000981:diagnostic imaging*; D001862:Bone Resorption / Q000000981:diagnostic imaging*; D006801:Humans; D007571:Jaw Diseases / Q000000981:diagnostic imaging; D008439:Maxillary Diseases / Q000000981:diagnostic imaging; D008722:Methods; D011859:Radiography