Ultrastructural and cytochemical studies on the dentinogenesis of rat incisors at the lingual side.

The innermost layer of cementum in rat molars : Its ultrastructure, development, and calcification.

“…In accordance with the findings by BERNARD (1972) andSUZUKI (1985), the author observed that when a layer of the root dentin matrix was entirely calcified, matrix vesicles could no longer be seen in it. Therefore, if the matrix vesicles on the surface of the developing ILC do derive from the dental papilla side, it is hard to explain why only these matrix vesicles remain while other ones disappear.…”

“…Thus, it is reasonable to consider that the matrix vesicles on the ILC surface are derived slightly later from are the mesenchymal cells. SUZUKI (1985) suggested that the epithelial sheath cells could not produce matrix vesicles. Therefore, the matrix vesicles involved in the ILC calcification may arise from the cementoblasts.…”

Distribution and organization of peripheral capillaries in dental pulp and their relationship to odontoblasts

“…Odontoblasts show remarkable differences in the degree of polarity, the quantity of cytoplasmic organelles, and the shape of the cell bodies during dentin formation, both in continuously growing rodent incisors (Takuma and Nagai, 1971; Suzuki, 1985;Semba, 1987, 1990;Ohshima and Yoshida, 1992) and in teeth of limited growth (Gartner et al, 1979;Tominaga et al, 1984;Couve, 1986;Yoshida et al, 1988aYoshida et al, , 1990. Since morphological changes in odontoblasts have been considered to reflect their secretory activity, positional changes of the peripheral capillaries must be related to the rate of dentin deposition.…”

Epithelial cytodifferentiation and extracellular matrix formation in enamel‐free areas of the occlusal cusp during development of mouse molars: Light and electron microscopic studies

“…However, in Hertwig's epithelial root sheath during root formation, and in the lingual surface of rodent incisors, the inner enamel epithelium fails to undergo cytodifferentiation into secretory ameloblasts despite differentiation of mesenchymal cells into odontoblasts and the consequent dentin mineralization. Therefore, for a deeper understanding of epitheliomesenchymal interactions, light and electron microscopy, immunohistochemistry or enzyme histochemistry, and autoradiography have been used to compare these regions with areas showing normal amelogenesis (Lester, 1969;Ten Cate, 1978;Owens, 1980;Lindskog and Hammarstrom, 1982;Nakamura, 1984;Andujar et al, 1985;Suzuki, 1985;Glazman et al, 1986;Nakamura et al, 1986Nakamura et al, , 1987). …”