Ismail O S, Weber D F
Department of Histology, University of Illinois, College of Dentistry, Chicago 60612.
Anat Rec. 1988 Oct;222(2):121-7. doi: 10.1002/ar.1092220203.
A scanning electron microscopic cast technique was used to determine the nature of the canalicular system in human cellular cementum. Prior light microscopic observations suggested the presence of two distinct types of lacunae: bone-like and a large irregular type generally confined to the interradicular region. Only the bone-like lacunae were visualized in the SEM cast preparations. The canalicular system associated with the bone-like lacunae was usually continuous from the surface of the dentin to the surface of the cementum in newly-erupted teeth. Casts having a sponge-like configuration were observed near the cementodentinal junction in some of the specimens from the interradicular region. The presence of these casts could not be predicted from prior light microscopic observations and it was concluded that they may represent infiltration of hypomineralized matrix rather than lacunae.
采用扫描电子显微镜铸型技术来确定人细胞性牙骨质中牙小管系统的性质。先前的光学显微镜观察表明存在两种不同类型的陷窝：骨样陷窝和通常局限于根间区域的大的不规则型陷窝。在扫描电子显微镜铸型标本中仅可见骨样陷窝。在新萌出牙齿中，与骨样陷窝相关的牙小管系统通常从牙本质表面延伸至牙骨质表面。在一些来自根间区域的标本中，在牙骨质牙本质界附近观察到具有海绵状结构的铸型。根据先前的光学显微镜观察无法预测这些铸型的存在，得出的结论是它们可能代表矿化不足基质的浸润而非陷窝。
