Читать книгу Orthodontic Treatment of Impacted Teeth - Adrian Becker - Страница 70

A true (vertex) occlusal 2D view of the anterior maxilla [4] needs a very long exposure time and it is for this reason that the method has never been popular. It is therefore almost with a collective sigh of relief among professionals that the method has been totally superseded by the introduction of volumetric cone beam computerized tomography (CBCT) scanning. The CBCT imaging modality, which can give much more information with little or no increase in radiation dosage, is discussed towards the end of this chapter.