牙本质发育不全伴牙中牙
Dentinogenesis imperfecta with dens in dente.
作者信息
Kerebel B, Kerebel L M, Daculsi G, Doury J
出版信息
Oral Surg Oral Med Oral Pathol. 1983 Mar;55(3):279-85. doi: 10.1016/0030-4220(83)90328-6.
An uncommon case of dentinogenesis imperfecta with dens in dente was studied by light microscopy, microradiography, and electron-microprobe analysis. Numerous canals and cellular inclusions were found in the coronal portion of the dentin where the tubules were sparse and irregularly distributed. In the radicular portion of the molar, large canals ran parallel to each other down to the apical region. The cementum was thinner and the Tomes granular layer greater in amount than usual. A dens in dente occurred in the radicular portion of the molar. It was located in a cavity and consisted of a mineralized cap of enamel, a spherical dentinal mass, and cellular cementum, located outside the cavity and in the "cervical" portion of the dens in dente.
通过光学显微镜、显微放射摄影术和电子微探针分析，研究了一例罕见的牙本质生成不全合并牙中牙病例。在牙本质冠部，小管稀疏且分布不规则，发现了大量的管道和细胞内含物。在磨牙的根部，大的管道相互平行延伸至根尖区域。牙骨质比正常情况更薄，托姆斯颗粒层数量更多。磨牙根部出现了牙中牙。它位于一个腔内，由牙釉质矿化帽、球形牙本质团块和细胞性牙骨质组成，位于腔外和牙中牙的“颈部”部分。
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