Dard M, Kerebel L M, Kerebel B
Unité de Recherche INSERM 225, Faculté de Chirurgie Dentaire, Nantes, France.
Arch Oral Biol. 1989;34(4):223-8. doi: 10.1016/0003-9969(89)90062-9.
The coronal pulps of four primary canines, free from radicular resorption, and of three primary teeth, with roots entirely resorbed, were prepared for electron microscopy. Mature fibroblasts, similar to those reported in the pulps of permanent teeth, were present in the pulps of the clinically mature teeth. Regression of fibroblasts, evident in the pulps of deciduous teeth at the root resorption stage, was characterized by cytoplasmic changes, modifications in the cytoskeleton and dissociation of cells and fibrils. Deciduous teeth might provide a model for studying pulp fibroblast ageing.
选取四颗无牙根吸收的乳尖牙和三颗牙根已完全吸收的乳牙的冠髓，制备用于电子显微镜观察的样本。临床成熟牙齿的牙髓中存在成熟的成纤维细胞，与恒牙牙髓中报道的成纤维细胞相似。在牙根吸收阶段的乳牙牙髓中，成纤维细胞出现退化，其特征为细胞质变化、细胞骨架改变以及细胞和纤维的解离。乳牙可能为研究牙髓成纤维细胞衰老提供一个模型。
