Doglia R, Herr P, Holz J, Baume L J
J Prosthet Dent. 1986 Oct;56(4):406-15. doi: 10.1016/0022-3913(86)90378-1.
In this study 96 teeth of 12 patients were restored with either the conventional alloy Premix, the blended non-gamma 2 amalgam Dispersalloy, or one of the spherical alloys Sybraloy and Tytin. To ascertain an objective comparison of the clinical performance of these alloys, two different alloys were used in each of at least two dental arch quadrants in the same patient and consequently were placed in the same oral environment. Clinical performance of the restorations was evaluated by macrophotography and scanning electron microphotography of replicas made after placement and 2, 3, and 5 years thereafter. Standard criteria were used for the evaluation of anatomic form, surface condition, and marginal adaptation of the fillings. In addition, the filling-enamel interface was assessed from the microphotographs. The three high-copper alloys performed better clinically than the conventional alloy, and the spherical alloys had the best qualifications. In addition to visual examination and photographic evaluation of restorations, the micrometric assessment of replica photographs from the scanning electron microscope may render clinical trials of amalgam alloys measurable and less subjective.
在本研究中，12名患者的96颗牙齿分别用传统合金预混料、混合非γ2汞合金Dispersalloy或球形合金Sybraloy和Tytin中的一种进行修复。为了对这些合金的临床性能进行客观比较，在同一患者的至少两个牙弓象限中各使用两种不同的合金，因此它们处于相同的口腔环境中。通过在修复体放置后以及此后2年、3年和5年制作的复制品的宏观摄影和扫描电子显微镜摄影来评估修复体的临床性能。使用标准标准来评估填充物的解剖形态、表面状况和边缘适应性。此外，从显微照片评估填充物与牙釉质的界面。三种高铜合金在临床上的表现优于传统合金，球形合金的性能最佳。除了对修复体进行视觉检查和摄影评估外，对扫描电子显微镜复制品照片的微观测量评估可使汞合金的临床试验具有可测量性且主观性降低。
