Dental Changes Induced in Rats by Prolonged Exposure to Adverse Environments,
Abstract
Histopathologic and chemical studies were made on teeth of four groups of rats following chronic exposure to varying environments of low (3 C, neutral (24 C), and High (35 C)) temperatures; or to reduced barometric pressure (380 mm. Hg). At these temperatures. Histologic changes were not seen in the ground control or cold groups. Altitude was associated with a disruption ofthe odontoblastic layer and with a loss of polarity. This effect was accentuated by superimposed cold. Heat counteracted some of these altitude effects, but caused ameloblastic changes. Chemically, the concentrations of calcium, phosphate, and magnesium were reduced significantly in the altitude- and heat-exposed groups. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1958
- Accession Number
- ADA035237
Entities
People
- Norman O. Harris
- Roy B. Meffred Jr.
- Salvatore R. Restivo