3D Radiology in Dentistry Diagnosis Pre-operative Planning Follow-up Ebook PDF
3D Radiology in Dentistry Diagnosis Pre-operative Planning Follow-up Ebook PDF The entirely accidental discovery of X-rays by Wilhelm Conrad Röntgen in December of 1895 was a true turning point in medical diagnostics. Taking a radiograph, as Röntgen had done of his wife’s hand (Fig. 1.1), a doctor could “explore” the human body from the outside without surgical intervention. Periapical radiographs were performed in the first few weeks following Röntgen’s discovery. Extra-oral imaging as well as the cephalometric radiograph would be performed soon after.
Subsequently, the introduction of orthopantomography in the 1960s and its widespread diffusion in the 1970s and 1980s allowed considerable progress in dental diagnostics, giving dentists a comprehensive image of dental arches and the maxillofacial complex.
However, in the years following the discovery of X-rays, a large number of studies and research were carried out in the radiodiagnostics sector in order to achieve three-dimensional images.
The studies started by Kieffer in Norwick, in 1929, led to the publication of the first geometric study of single-direction axial stratigraphy in 1938 (Kieffer 1938); they were continued by Amisano, who performed the first axial tomograph in 1944, and by Frain and Lacroix, who carried out the “Radiotome”(Frain and Lacroix 1948). However, Alessandro Vallebona, who developed his first tomograph in 1930, was the scientist that first introduced the use of this system on human beings, with transverse axial stratigraphy. His axial stratigraph (Fig. 1.2) worked with an X-ray tube and required both the patient and film to rotate along relative vertical axes. The
stratigraphic plane was chosen by lifting or lowering the patient’s stool.