Cathers S J, Roahen J O
Naval Dental Center, Great Lakes, Ill.
Oral Surg Oral Med Oral Pathol. 1993 Sep;76(3):343-5. doi: 10.1016/0030-4220(93)90265-6.
The apical seal of amalgam retrograde fillings was evaluated in 86 extracted teeth. The experimental groups included retrofillings of amalgam alone, amalgam with a cavity varnish interface, and amalgam with a root canal sealer interface. After a 3-month immersion of the teeth in Higgins ink and subsequent clearing process, statistical analysis of ink penetration measurements showed significantly less leakage (p < 0.001) around amalgam retrofillings when using a root canal sealer as an interface between the retrograde cavity preparation and the condensed amalgam.
在86颗拔除的牙齿中评估了银汞合金倒充填体的根尖封闭情况。实验组包括单纯银汞合金倒充填、银汞合金与洞漆界面以及银汞合金与根管封闭剂界面。将牙齿在希金斯墨水中浸泡3个月并经过后续的清理过程后，对墨水渗透测量值的统计分析表明，当使用根管封闭剂作为倒预备洞与压实银汞合金之间的界面时，银汞合金倒充填体周围的渗漏明显减少（p<0.001）。
