Hosoya N, Lautenschlager E P, Greener E H
Department of Endodontics and Periodontics, Tsurumi University, School of Dental Medicine, Yokohama, Japan.
J Endod. 1995 Sep;21(9):456-8. doi: 10.1016/S0099-2399(06)81528-1.
The feasibility of utilizing mercury-free Gallium alloy GF for retrograde filling was investigated by comparing apical microleakage in 184 extracted human teeth. The teeth were divided into four experimental and two control groups. Three experimental groups were apical cavity retrofillings with the Gallium alloy GF, a mercury-containing amalgam, and a glass ionomer. The fourth experimental group was filled with gutta-percha and heat-burnished after apicoectomy. After 24 h, 1 wk, 4 wk, and 12 wk immersion in dye solution, the roots were vertically sectioned, and the deepest point of dye penetration was recorded. The glass ionomer showed the least leakage, followed by the amalgam group and the gallium group (no significant difference). The gutta-percha heat-burnished group displayed the greatest leakage. Gallium alloy GF was shown to have an equivalent sealing potential to dental amalgam for a retrograde filling material.
通过比较184颗拔除的人牙的根尖微渗漏情况，研究了使用无汞镓合金GF进行倒充填的可行性。这些牙齿被分为四个实验组和两个对照组。三个实验组分别用镓合金GF、含汞银汞合金和玻璃离子体进行根尖腔倒充填。第四个实验组在根尖切除术后用牙胶充填并热抛光。在染料溶液中浸泡24小时、1周、4周和12周后，将牙根垂直切开，记录染料渗透的最深点。玻璃离子体显示出最少的渗漏，其次是银汞合金组和镓组（无显著差异）。牙胶热抛光组显示出最大的渗漏。结果表明，镓合金GF作为一种倒充填材料，其密封潜力与牙科银汞合金相当。
