Seymen Figen, Kiziltan Basak
University of Istanbul, Faculty of Dentistry, Department of Pedodontics, Turkey.
J Clin Pediatr Dent. 2002 Summer;26(4):327-35. doi: 10.17796/jcpd.26.4.3348743513089434.
Amelogenesis imperfecta (AI) is a hereditary defect in enamel formation affecting both primary and permanent dentition. Scanning electron microscopic investigation is one of the most effective methods in diagnosing and identifying the type of amelogenesis imperfecta. The aim of this study was to investigate the ultrastructure of different types of amelogenesis imperfecta enamel. The primary teeth of three children with AI aged 4, 10 and 11-years-old were studied by scanning electron microscopy and irregular enamel, irregularities in enamel crystallites, hypoplastic areas on the enamel surface were seen. Histopathological evaluation revealed predentin areas with irregular canaliculi between normal dentin and internal resorption areas in the pulp tissue. Conclusively, in amelogenesis imperfecta, enamel tissue is mostly affected besides minor defects in dentinal and pulpal tissue.
釉质发育不全（AI）是一种影响乳牙和恒牙的牙釉质形成的遗传性缺陷。扫描电子显微镜检查是诊断和识别釉质发育不全类型的最有效方法之一。本研究的目的是调查不同类型釉质发育不全牙釉质的超微结构。通过扫描电子显微镜对三名4岁、10岁和11岁患有AI的儿童的乳牙进行了研究，观察到牙釉质不规则、釉质微晶不规则以及牙釉质表面的发育不全区域。组织病理学评估显示，在正常牙本质和牙髓组织内吸收区域之间存在牙本质前期区域，其小管不规则。总之，在釉质发育不全中，除了牙本质和牙髓组织存在轻微缺陷外，牙釉质组织大多受到影响。
