This study was conducted to investigate the relationship between estrogen
depletion ,calcium-deficiency,and alveolar bone loss.
Alveolar bone loss was evaluated by radiographic and visual inspection of
rabbits with experimental lack of estrogen an
d calcium.
Twenty female local rabbits (4 months old) were divided into four groups
:group a -ovariectomized and given a standard solid diet.
Group b-ovariectomized and given a calcium – deficient diet
Group c-sham-ovariectomized and given a standard solid diet.
And group d-sham-ovariectomized and given a calcium-deficient diet
after 8 weeks,the rabbits were sacrificed .
The maxillae, mandibles, femurs, and tibias were removed carfully and
fixed in 10% neutral buffered formalin. The bone mineral density of each
bone and the alveolar bone loss were measured.the bone meniral densities of
the maxillae,mandibles,femurs and tabias in group (c) were significantly
higher than those in groups (b)and (d),but not higher than those in group
a.however there were no significant differences between any of the groups
with regard to alveolar bone loss from the cemento-enamel junction to the
molar bone crest.
