In vitro examination of human teeth using ultrasound and X-ray diffraction

• Autorzy: Gawda H. , Sękowski L. , Trębacz H.
• Języki publikacji: EN

Abstrakty

EN

The aim of this paper was to find whether an ultrasound velocity along a whole tooth reflects variety of its morphology and properties and to compare thc results of ultrasonic measuremcnts with X-ray diffraction data from a large area of tooth. 100 kHz pulses were transmitted in longitudinal direction of ectracted teeth. A significant variation of velocity in teeth from diffcrent donors was statwd (from 3200 m/s to 4200 m/s). The velocity was influenced both by the age of donors and the type of a tooth. For a given individual, the grcatest difference was revealed between incisors and canine teeth. Considering X-ray diffraction results, a difference in size of crystallites between teeth was found. In an enamel, the size of crystallites ranged from 20 nm to 50 nm, and in dentin - from 5.5 nm to 39 nm. The size of crystailites in dentin was positively correlated with the ultrasound velocity.

Słowa kluczowe

EN

teeth; X-ray diffraction; ultrasonic measurements

PL

ząb; dyfrakcja rentgenowska

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2004
• Tom: Vol. 6, nr 1
• Strony: 41--49
• Opis fizyczny: Bibliogr. 12 poz., rys., tab., wykr.

Twórcy

autor

Gawda H.

• Department of Biophysics, Medical University of Lublin, ul. Jaczewskicgo 8, 20-090 Lublin, Poland

autor

Sękowski L.

• Department of Biophysics, Medical University of Lublin, ul. Jaczewskicgo 8, 20-090 Lublin, Poland

autor

Trębacz H.

• Department of Biophysics, Medical University of Lublin, ul. Jaczewskicgo 8, 20-090 Lublin, Poland

Bibliografia

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