Osborne J W, Summitt J B
University of Colorado Health Sciences Center, Denver 80262, USA.
Oper Dent. 1995 Nov-Dec;20(6):241-5.
In a combination clinical/laboratory evaluation, a gallium restorative alloy (Galloy) was assessed for six mechanical properties: compressive strength, diametral tensile strength, creep, hardness, wear, and dimensional change. Laboratory tests indicated that the gallium alloy was similar to either Tytin or Dispersalloy in most respects, with the exception of lower wear and higher 7-day diametral tensile strength. In the clinical trial, all Galloy restorations were lined with a resin to prevent moisture contacting the material during the first hours after placement. All gallium restorations--class 1's only--were intact, and no teeth were fractured at the end of 1 year. There was little difference found at the 1-year evaluation compared to the 6-month results. The surface of the gallium alloy was generally rough, and many restorations exhibited some tarnish on the surface. It should be pointed out that this product has not been FDA approved at the present time and is not on the market.
在一项临床与实验室相结合的评估中，对一种镓修复合金（Galloy）的六种机械性能进行了评估：抗压强度、径向拉伸强度、蠕变、硬度、磨损和尺寸变化。实验室测试表明，镓合金在大多数方面与Tytin或Dispersalloy相似，只是磨损较低且7天径向拉伸强度较高。在临床试验中，所有Galloy修复体都衬有树脂，以防止在放置后的最初几个小时内水分接触材料。所有镓修复体（仅I类）均完好无损，1年后没有牙齿发生折断。与6个月的结果相比，1年评估时发现的差异很小。镓合金表面通常粗糙，许多修复体表面有一些变色。应该指出的是，该产品目前尚未获得美国食品药品监督管理局（FDA）的批准，也未上市。
