[On the radiographic density distribution of the apical region (author's transl)].
D015502:Absorptiometry, Photon; D000328:Adult; D006801:Humans; D008963:Molar / Q000000981:diagnostic imaging; D010486:Periapical Tissue / Q000000981:diagnostic imaging*; D011861:Radiography, Dental / Q000592:standards; D014092:Tooth Root / Q000000981:diagnostic imaging*