title: Dental pantomography. The orthopantomograph: a method of patient positioning.
abstract: The shape of the "in-focus" zone or focal trough given by the Orthopantomograph machine is shown. The anterior part of this zone is only 6 mm in thickness. The roots of the incisor teeth should, if possible, be placed accurately in this zone and a method of achieving this is suggested.
mesh_terms: D006801:Humans; D011187:Posture; D011861:Radiography, Dental / Q000379:methods*; D011862:Radiography, Panoramic / Q000379:methods*