CAJ | 학술논문

目的研究牙髓成牙本质细胞层中有无毛细淋巴管及其超微结构特点.方法取牙根发育完成的健康恒前磨牙15颗,纵向劈开后在2.5%戊二醛中4℃固定1 h,完整地取出牙髓,切成截面积约为1 mm2,长约3 mm的小长条,再在同一固定液中固定2 h,后固定,包埋,半薄切片定位,选取5例牙髓进一步作超薄切片,铀铅染色,用透射电镜观察.结果在成牙本质细胞层中观察到具有典型毛细淋巴管超微结构特点的结构.结论在牙根发育完成的年轻恒前磨牙成牙本质细胞层中有毛细淋巴管,其具有与其他组织毛细淋巴管基本相似的超微结构特征.
목적 연구아수성아본질세포층중유무모세림파관급기초미결구특점.방법 취아근발육완성적건강항전마아15과,종향벽개후재2.5%무이철중4℃고정1 h,완정지취출아수,절성절면적약위1 mm2,장약3 mm적소장조,재재동일고정액중고정2 h,후고정,포매,반박절편정위,선취5례아수진일보작초박절편,유연염색,용투사전경관찰.결과 재성아본질세포층중관찰도구유전형모세림파관초미결구특점적결구.결론 재아근발육완성적년경항전마아성아본질세포층중유모세림파관,기구유여기타조직모세림파관기본상사적초미결구특정.
Objective To study the lymphatic capiliaries in the odontoblast layer of pulp. Methods 15 healthy premolars were employed in the experiments whose roots had developed. They were cleaved longitudinally as soon as they were extracted and put into 2. 5% glutaraldehyde soulution for 1 hour at 4C. The pulps were taken out and cut into little pieces and re-immersed in the same soulution for 2 hours. Then they were postfixed, dehydrated and embedded. And semithin sections were made. 5 pulps were chosen to make ultrathin sections and observed by transmission electronmicroscope (TEM). Results In the odontoblast layer, structures which had typical characters of lymphatic capiliaries were found with TEM. Conclusion There are lymphtic capillaries in the odontoblast layer of pulps which are young and healthy. The characters of lymphtic capiliariy are similar to those of other tissues.