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Histologic and histometric study of the effect of fluoride on the rat mandibular condyle
Author(s) -
Kameyama Yoichiro
Publication year - 1974
Publication title -
journal of oral pathology and medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 83
eISSN - 1600-0714
pISSN - 0904-2512
DOI - 10.1111/j.1600-0714.1974.tb01713.x
Subject(s) - condyle , fluoride , cartilage , cancellous bone , anatomy , thickening , chemistry , dentistry , medicine , inorganic chemistry , polymer science
. The effect of fluoride on the rat mandibular condyle was studied histologically and histometrically. The condyles of the rats that received 50 ppm fluoride in the drinking water for 17 weeks did not differ in structure from those of the control rats fed tap water containing 1 ppm fluoride. However, the condyles of the rats given 100 ppm fluoride in the drinking water for the same period showed a significant increase in both the thickness of the cartilage layer ( P < 0.02) and the density of cancellous bone ( P < 0.01) when compared to the controls. The thickening of the cartilage layer was due to an increase in the number of hypertrophied chondrocytes. The trabeculae of cancellous bone were thicker and consequently the bone marrow spaces were extremely reduced. The trabeculae contained more calcified cartilage in their cores.