. The science and practice of dental surgery. year qIK year I i^ year f^^vQar Fig. 27.—Showmg the amount of calcification the deciduous andpermanent teeth have undergone at various ages. The deciduousteeth are represented in the upper part of the iUustration. Theories as to the development of the per-manent teeth-germs are— (1) Tomes (32) beheves that the permanentteeth grow from the tooth-band near theneck of the enamel-organ of the deciduousteeth. (2) Baume is of the opinion that the per-manent teeth develop from the remains ofthe primitive inflection, without having anydirect connection wit
. The science and practice of dental surgery. year qIK year I i^ year f^^vQar Fig. 27.—Showmg the amount of calcification the deciduous andpermanent teeth have undergone at various ages. The deciduousteeth are represented in the upper part of the iUustration. Theories as to the development of the per-manent teeth-germs are— (1) Tomes (32) beheves that the permanentteeth grow from the tooth-band near theneck of the enamel-organ of the deciduousteeth. (2) Baume is of the opinion that the per-manent teeth develop from the remains ofthe primitive inflection, without having anydirect connection with the deciduous teeth-germs. (3) Rose takes the view that the deciduousand permanent teeth-germs originate froma common tooth-band (zahnleiste), but of one another, the mesoderminvaginating the ectodermic tooth-band andso receiving its cap of enamel. The enamel, or adamant, is formed from theenamel-organ, and chiefly from that part of itwhich is applied to the dental papilla (internalenamel-cells), deposition taking p
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectdentistry, bookyear19
