Heide S, Koppang H S
Department of Pedodontics, University of Oslo, Norway.
Endod Dent Traumatol. 1994 Jun;10(3):134-40. doi: 10.1111/j.1600-9657.1994.tb00538.x.
The exposed pulp of incompletely developed permanent incisors of nine monkeys were treated with partial pulpotomy with tungsten carbide fissure burs on an air turbine equipment. The pulps were capped with calcium hydroxide (Dycal) followed by insertion of conventional amalgam. The results were studied by conventional light microscopy after 1 and 6 months. Rod-like mineralized pulpal deposits were seen in five of the nine animals, in 9 out of 67 teeth, evenly distributed at the two observation times. Also the lengths of the deposits appeared similar, while the thickness had increased markedly after 6 months. After 1 month the presence of a central vessel lumen was observed in the deposits. The results seemed to indicate that the mechanism of formation was an initial pathologic mineralization of the vessel wall, and a growth of the deposits by the elaboration of fibrous, atubular dentin on to the outside of this wall.
对9只猴子未完全发育的恒切牙暴露牙髓，使用气涡轮设备上的碳化钨裂钻进行部分牙髓切断术。牙髓用氢氧化钙（Dycal）覆盖，随后填入传统银汞合金。1个月和6个月后，通过传统光学显微镜对结果进行研究。在9只动物中的5只、67颗牙齿中的9颗中观察到棒状矿化牙髓沉积物，在两个观察时间点均匀分布。此外，沉积物的长度似乎相似，而6个月后厚度明显增加。1个月后，在沉积物中观察到中央血管腔的存在。结果似乎表明，形成机制是血管壁的初始病理性矿化，以及通过在该壁外侧形成纤维状、无小管牙本质使沉积物生长。
