Study of pulp capping model for dentin regeneration

为探讨高频射频治疗仪对大鼠上颌第一磨牙的止血和诱导修复性牙本质的作用，我们在大鼠上颌第一磨牙上制作了人工暴露髓。结果表明，在高频电波发生器中，采用温和压力法对棉球湿润体和次氯酸钠湿润体进行处理，可以获得高质量的修复性牙本质。并探讨K锉对修复性牙本质形成暴露的影响。用30K号锉扩髓后，修复性牙本质形成质量较好，而用50K号以上锉扩髓后，修复性牙本质形成质量较差，有隧道样缺损。结果表明，止血条件或暴露部位对牙髓的炎症反应和牙本质再生均有影响。

To evaluate the hemostasis and reparative dentin induction by the high frequency radio wave generator, we made exposed pulp artificially in maxillary first molar in rat. Compared the cotton pellet moisture with Sodium hypochloride by gentle pressure with high frequency radio wave generator, high frequency radio wave produced reparative dentin having high quality. And also we tried to examine the effect to the reparative dentin formation exposure by using K files. Pulp expanded by No.30 K file has showed good quality of reparative dentin formation, however by over No.50 K file was formed low quality reparative dentin formation with tunnel like defect. In these results, indicated that the hemostasis condition or exposure area can affect to the dentin regeneration and inflammation of the pulp.