THE DISTRIBUTION OF RADIOACTIVE PHOSPHORUS IN THE TEETH OF EXPERIMENTAL ANIMALS
JOSEPH F. VOLKER 1 and
REIDAR F. SOGNNAES 1
1 Division of Dental Research, University of Rochester School of Medicine and Dentistry, Rochester, N. Y.
A study has been made of the radiophosphorus deposition in the bones and teeth of 9 cats, 5 dogs and 1 monkey. The cats, sacrificed from 1 to 9 days after administration of the isotope, had approximately 0.02 to 0.05 per cent of the total dose in the entire dentition. The corresponding values for a 4-hour experiment with dogs was 0.07 per cent to 0.12 per cent and for a 6-day experiment with a monkey 0.06 per cent. Per gram of tissue, enamel contained 10 per cent to 14 per cent of the radiophosphorus content of the dentin. In general, coronal dentin contained less marked phosphorus than root dentin and maxillary bone greater concentrations of radiophosphorus than mandibular bone.
Submitted on May 5, 1941
