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Impeded Eruption Rate of the Rat Maxillary Incisor During Exposure to Different Simulated Altitudes

Cátedra de Fisiologia, Facultad de Odontología, Universidad de Buenos Aires, Marcelo T. de Alvear 2142, 1122 Buenos Aires, República Argentina

A.M. Sanz

Cátedra de Fisiologia, Facultad de Odontología, Universidad de Buenos Aires, Marcelo T. de Alvear 2142, 1122 Buenos Aires, República Argentina

A. Constanzo

Cátedra de Fisiologia, Facultad de Odontología, Universidad de Buenos Aires, Marcelo T. de Alvear 2142, 1122 Buenos Aires, República Argentina

C.E. Bozzini

Cátedra de Fisiologia, Facultad de Odontología, Universidad de Buenos Aires, Marcelo T. de Alvear 2142, 1122 Buenos Aires, República Argentina

Female rats weighing about 200 g each were separated into normoxic and hypoxic groups. The former were maintained at sea-level conditions. The hypoxic groups were placed in an altitude chamber and maintained at the equivalent of 1850 m, 4100 m, or 7100 m over a period of two weeks. Hematocrit, body weight, body length, and impeded eruption rate were recorded once a week. Food intake was recorded every day. Exposure to 1850 m did not significantly alter hematocrit, body weight and body length gains, food intake, and impeded eruption rate. Nevertheless, exposure to 4100 m and 7100 m decreased body weight and body length gains, food intake, and impeded eruption rate, and increased hematocrit value. These parameters varied as a function of altitude. In spite of the lack of conclusive evidence, this work affords further insight into the particular significance of polycythemia on the eruption rate.

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Journal of Dental Research, Vol. 66, No. 9, 1490-1492 (1987)
DOI: 10.1177/00220345870660091501


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