Principles and practice of operative dentistry . oth cartilage) Fat Phosphate and fluoride of calcium Carbonate of calcium. Phosphate of magnesium Other salts Galippe gives the relative proportions of organic and inorganic matterin dentin as follows : Water and organic matter Mineral matter Matter. Soluble ash (alkaline chlorides and phosphates) Calcium carbonate Magnesium carbonate Calcium Magnesium Phosphoric acid Silicates Undetermined Black, in h
Principles and practice of operative dentistry . oth cartilage) Fat Phosphate and fluoride of calcium Carbonate of calcium. Phosphate of magnesium Other salts Galippe gives the relative proportions of organic and inorganic matterin dentin as follows : Water and organic matter Mineral matter Matter. Soluble ash (alkaline chlorides and phosphates) Calcium carbonate Magnesium carbonate Calcium Magnesium Phosphoric acid Silicates Undetermined Black, in his experiments upon the Physical Characters of the HumanTeeth, Dental Cosmos, 1895, found the analysis of the dentin of two hun-dred and sixty-eight teeth taken from one hundred and eleven differentpersons to give the following results : Average age of the individuals from whom the teeth were taken was, in years Specific gravity of the dentin Percentage of water Percentage of lime salts Percentage of organic matter Fig. 152.—Section of forming enamel, calcoglobulin spherites being deposited to form the enamel-rods, (R. R. Andrews.) Knamel „._ _ ... L ? ?> m ^ ^31 Dentin wt 1 Pulp-cavity p-- Cementum IP ? ]
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