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用细胞成形质的三维研究方法（AODO）扫描电镜（SEM）观察研究鼠切牙造牙本质细胞的超微结构（OBs）。结果：（1）年轻OBs的特征为有同心层状粗面内质网（RER）以及许多长的线粒体；（2）RER转变成与成熟及年老OBs分泌活动有关的管状网．年老OBs尤其在细胞的远中末端含有许多小的圆形线粒体；（3）在年轻及年老的OBs中都可以观察到管泡状成分；（4）在年轻及年老OBs中，均发现与Golgi复合体及平滑内质网（SER）有关的胞浆内小体；（5）同时发现在基质沉积期，小泡内吐入髓周的前期牙本质中。目前的形态学研究证明存在着与OBs牙本质形成有关的三维结构。
Ultrastructural structures (OBs) of mouse incisor dentin cells were observed by three-dimensional (AODO) scanning electron microscopy (SEM). RESULTS: (1) Young OBs were characterized by concentric lamellar rough endoplasmic reticulum (RER) and many long mitochondria; (2) RER was converted to a tubular network associated with the secretion of mature and aged OBs. Older OBs contain many small round mitochondria, especially at the distal ends of the cells; (3) Tubular components are observed in both young and old OBs; (4) Both young and old OBs Found that Golgi complexes and smooth endoplasmic reticulum (SER) -related cytoplasmic bodies; (5) also found that during the matrix deposition period, the vesicle into the medulla oblongata predentin. Current morphological studies have demonstrated the existence of three-dimensional structures associated with dentin formation in OBs.