Method: Open drainage and dental pulpcavity seal were adopted.
方法：采用开放引流、髓腔封闭二种方法。
2
Instructions: the product is divided into soft shaft pulpcavity hole opener to a pulpcavity axis and hole opener to;
产品说明：该产品分为软轴髓腔扩大器和硬轴髓腔扩大器；
3
If teeth tooth decay before boring to the dental pulpcavity, because root canal treatment technology was not developed teeth almost to escape the pull of fate.