Mechanically-induced generation of radicals in tooth enamel.
Mechanical instrumentation of enamel leads to the formation of long-lived free radicals that can be conveniently measured by electron paramagnetic resonance (EPR) spectroscopy. Powdered enamel tissue exhibited EPR signals remarkably similar to the radicals formed by ionizing radiation. The observations described below lead to the conclusion that physical stress will induce a free-radical formation in dental tissues. These observations have significance for other areas of study such as dosimetry and archeological dating.
Desrosiers
M F
MF
Center for Radiation Research, National Institute of Standards and Technology, Gaithersburg, MD 20899.
Simic
M G
MG
Eichmiller
F C
FC
Johnston
A D
AD
Bowen
R L
RL
D003743:Dental Enamel; D004578:Electron Spin Resonance Spectroscopy; D005609:Free Radicals; D006801:Humans; D011874:Radiometry / Q000379:methods; D013314:Stress, Mechanical
D005609:Free Radicals