Studies on the Enamel Structure of Transplanted Tooth Germ

DOI Web Site 1 Citations 17 References
  • Yamamoto Hitoshi
    Department of Histology, Cytology and Developmental Anatomy, Nihon University School of Dentistry at Matsudo
  • Chai Jinglei
    Division in Anatomy and Developmental Biology, Department of Oral Biology, College of Dentistry, Yonsei University
  • Suzuki Kunihiro
    Department of Histology, Cytology and Developmental Anatomy, Nihon University School of Dentistry at Matsudo
  • Yokota Rumi
    Department of Histology, Cytology and Developmental Anatomy, Nihon University School of Dentistry at Matsudo
  • Chisaka Hideki
    Department of Histology, Cytology and Developmental Anatomy, Nihon University School of Dentistry at Matsudo
  • Sakae Toshiro
    Department of Histology, Cytology and Developmental Anatomy, Nihon University School of Dentistry at Matsudo
  • Jung Han-Sung
    Division in Anatomy and Developmental Biology, Department of Oral Biology, College of Dentistry, Yonsei University
  • Kozawa Yukishige
    Department of Histology, Cytology and Developmental Anatomy, Nihon University School of Dentistry at Matsudo

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Abstract

Enamel covers the dentin in mammalian teeth. It is believed that the enamel structure reflects the function of teeth, since the enamel structure is different depending on an animal's feeding habits. Tooth germ transplantation is a popular method for developmental and tissue engineering research. However, there is little information about the structure of the enamel of transplanted tooth germ, although tooth structure, especially enamel structure, is very important for the function of teeth. In this study, the enamel structure of E13.5 mouse mandible first molars transplanted into the kidney capsule was observed by scanning electron microscopy. Many part of the tooth crown are formed at transplantation 7 day. Although enamel and dentin were observed at the cusp portion, hard tissue was not formed at the cervical portion. The enamel prisms were observed at day 21 after transplantation. The enamel was divided into three layers according to the running pattern of the enamel prisms as normal tooth germ in vivo. However, the width of the various layers was different. It seems likely that the microenvironment surrounding tooth germ may play an important role in determining the structure of the enamel, since normal tooth germ grows in the calcified alveolar bone according as development.

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