ヒト象牙質表層部における象牙細管の構造に関する観察
1985 年 52 巻 2 号 p. 438-468
詳細
1985 年 52 巻 2 号 p. 438-468
The purpose of this study was to investigate the structure of the dentinal tubules in the superficial layer of the human coronal dentin. It was observed by light microscope, scanning electron microscope and transmission electron microscope.
The findings were as follows:
1. The width of the intratubular layer in the superficial layer was generally narrow. In some cases, the dentinal tubules may lack partially the intratubular layer.
2. The longitudinal fibers outside of the intratubular layer were observed on the dentinal tubules of the superficial layer.
3. Generally speaking, the dentinal tubules of the superficial layer were smaller than those of the middle layer. But if the size of the dentinal tubules outside of the longitudinal fibers is measured, the size of the dentinal tubules of the superficial layer will be very near to that of the middle layer.
4. The tubular structure of the dentinal tubules of the superficial layer were generally fine. Among these there are also those in which the existence of the tubular structure can not be confirmed clearly.
5. Because of crystallization, stricture or obturation of the dentinal tubules in the superficial layer was observed very often.
