象牙質の銀好性原線維の出現に関する実驗的研究

抄録

The collagenous fibrils existing in the ground substance of dentine binding strictly the dentine itself were scarcely stained, even by any special stainings.
The collagenous fibrils only in the decayed dentine were possible to be stained out comparatively better by MEYER (1932). Thenceforth SUZUKI (1942) succeeded for the first time in the clear staining of the collagenous fibrils running in the healthy dentine by applying the method of permeating the ammoniated silver solution into the dentine by the action of the electric current. As mentioned above, the collagenous fibrils in the healthy dentine are extremely difficult to be stained out by any staining methods with the exception of SUZUKI's method.
The authors succeeded experimentally in making the fibrils that are stained out easily and clearly by a solution of silver nitrate appear along the margins of the partially excavated healthy dentine belonging to the tooth-crowns implanted in the jawbones of living humans in 35-52 days after the operation (Fig. 1 and 2). Our argyrophil fibrils appear secondarily in all probability after the operation and are clearly distinguished by their stainability from the collagenous fibrils stained out by SUZUKI.
The argyrophil fibrils are thought to be the same as the collagenous fibrils stained out in the decayed dentine.
Both fibrils appear, the authors consider, secondarily under a phenomenon settling from the ground substance of the dentine for the purpose of wound-healing or defence of the decayed dentine. Conclusively the authors presume that both fibrils are in the stage of the precollagenous fibrils, from the standpoint of their equal stainability.