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对于修复因人工穿通髓室底而引起的牙质缺损和牙槽中隔损伤,作者将无机生物材料—羟基磷灰石颗粒应用于狗牙上,取得了较好的效果。实验用一只牙周组织无异常的成年狗上下颌前后磨牙共5个牙,全身麻醉后常规去髓,冲洗止血后,用vitapex充填根管。随后用消毒的3号球钴将髓室底穿通,生理盐水冲洗,然后用小笔将颗粒直径为100～250微米的羟基磷灰石送到穿孔处,充填器加压充填,上部用银汞合金充填。术后3个月的组织病理学观察,良好的2例,较好的3例。良好的2例中穿孔处的羟基磷灰石充填良好,没有炎细胞浸润和上皮长入,骨髓组织中无特殊所见。在羟
In order to repair the dentin defect and the alveolar septum damage caused by the artificial perforation of the pulp chamber, the author has made good use of the inorganic biomaterial-hydroxyapatite particles on the dog teeth. Experimental use of a periodontal tissue without abnormalities in the anterior and posterior teeth of adult dogs with a total of 5 teeth before and after general anesthesia to the pulp, rinse to stop bleeding, filling the root canal with vitapex. Followed by sterilized No. 3 cobalt ball through the bottom of the pulp chamber, rinsed with saline, and then with a small pen to the particle diameter of 100 to 250 microns of hydroxyapatite to the perforation Department, filling device pressurized filling, the upper part with silver mercury Alloy filling. Histopathology was observed 3 months after operation, with good in 2 cases and good in 3 cases. Good 2 cases of perforation at the hydroxyapatite filled well, there is no infiltration of inflammatory cells and epithelial growth, bone marrow tissue no special view. In the hydroxyl