乳切牙牙体硬组织的扫描电镜观察及临床分析  

Observation of pulp cavity wall of primary incisors and its clinical analysis

作　　者：高洁[1] 李波[1] 刘月华[2] 

机构地区：[1]辽宁沈阳中国医科大学口腔医学院,110002 [2]中国医科大学第二电镜室

出　　处：《实用口腔医学杂志》2008年第2期274-276,共3页Journal of Practical Stomatology

摘　　要：目的:通过对乳牙髓腔壁形态特点的观察,并与恒牙进行对比,分析和探讨乳牙龋病发展特点与其形态结构的联系。方法:取外伤后无法保存的上颌乳中切牙作为标本,运用扫描电镜技术进行形态学观察。结果:与恒牙相比,乳牙的3种硬组织结构均较疏松,胶原纤维丰富,牙本质小管偏直,小管内成牙本质细胞突起多见。结论:乳牙的形态结构特点是龋病易感的重要因素,也是利用药物进行乳牙龋病预防的结构基础。Objective：To observe the morphologic characteristic of the walls of primary tooth pulp cavity,comparing with young permanent teeth,to explore the relationship between morphological structure of the primary teeth and caries development.Methods：Specimens were obtained from patients who suffered from dental traumas and the upper primary central incisors cannot be kept.The SEM technique was used for the observation.Results：Three kinds of dental hard tissues had porous structures,with plenty of collagen fibers,more straight dental tubules and more odontoblastic processes in the tubules.Conclusion：The morphological-structural characteristics of primary teeth is an important factor of caries development.It is also the structure base on medical prevention of dental caries.

关 键 词：乳牙 牙髓腔 扫描电镜 

分 类 号：R78[医药卫生—口腔医学]