Objectives: Parametric X-ray (PXR) is a new type of X-ray having some unique characteristics such as ultra high- brightness/pulse, coherency, monochromatic, changing the wavelength with ease, etc., and is now generated by a LINAC at LEBRA, Nihon University. Application of this high power X-ray to dental hard tissues was attempted to survey the optimum conditions. Methods: Thin sectionsof human and some animal teeth, 100 µm to 1 mm in thickness, were made by a Buhler low speed diamond saw. LEBRA-PXR was generated at 2Hz 100 MeV LINAC, and irradiated to these sections, and radiogram was recorded on Polaroid instant film, Fuji Film Imaging Plate, or Hamamatsu X-ray CCD camera. Results: The radiograms for the tooth sections of 100 µm were well shown at the exposure time of 30 min, 10 min and 5 min for the three imaging system, respectively. Resolution of the radiogram was depend on the imaging system. Trial of changing the wavelength showed that in some cases 13.5 KeV PXR, 0.92 Å, gave the better resolution than 9.5 KeV, 1.31 Å, or 8.9 KeV, 1.39 Å. Conclusion: LEBRA-PXR is a useful and powerful tool for the radiographic study of dental hard tissues in the place of usual contact-microradiography.
Division: Japanese Division Meeting
Meeting:2004 Japanese Division Meeting (Tokyo, Japan) Location: Tokyo, Japan
Year: 2004 Final Presentation ID:10 Abstract Category|Abstract Category(s):Scientific Groups
Authors
Sakae, Toshiro
( Nihon University, Matsudo Chiba, N/A, Japan
)
Sato, Isamu
( Nihon University, Funabashi, N/A, Japan
)
Sato, Yukie
( Nihon University, Matsudo Chiba, N/A, Japan
)
Okada, Hiroyuki
( Nihon University, Matsudo Chiba, N/A, Japan
)
Yamamoto, Hirotsugu
( Nihon University, Chiba, N/A, Japan
)
Hayakawa, Tohru
( Nihon University, Chiba, N/A, Japan
)
Nakada, Hiroshi
( Nihon University, Chiba, N/A, Japan
)
Hayakawa, Yasushi
( Nihon University, Funabashi, N/A, Japan
)
Tanaka, Toshinari
( Nihon University, Funabashi, N/A, Japan
)
Hayakawa, Ken
( Nihon University, Funabashi, N/A, Japan
)