Dionysopoulos P, Kotsanos N, Papadogiannis Y
University of Thessaloniki, Dental School, Greece.
Oper Dent. 1990 Sep-Oct;15(5):178-85.
Secondary caries is one of the most important factors leading to replacement of amalgam restorations. This investigation compared the anticariogenic effect of a fluoride-containing amalgam, a stannous fluoride application in the cavity prior to restoration with conventional amalgam, and the combination of the fluoride treatment with the well-recognized technique of cavity varnishing. Class 5 cavities were prepared in the middle third of both buccal and lingual surfaces of 20 extracted premolars. Conventional amalgam was inserted in 10 cavities (control group). Fluoride-containing amalgam was inserted in 10 cavities (second group). The third group received a treatment of 8% SnF2 and the fourth group received the SnF2 and a cavity varnish application before insertion of the conventional amalgam. After 15 weeks in an acid-gel for caries-like lesion formation, the teeth were sectioned longitudinally and examined with polarized light. The results showed that both fluoride-containing amalgam and conventional amalgam with prior treatment of the cavity with the stannous fluoride solution and varnish had an inhibitory effect on the development of artificial cavity wall caries in vitro.
继发龋是导致汞合金修复体更换的最重要因素之一。本研究比较了含氟汞合金、修复前在窝洞内应用氟化亚锡结合传统汞合金以及氟化物治疗与公认的窝洞涂漆技术相结合的防龋效果。在20颗拔除的前磨牙的颊面和舌面中1/3制备Ⅴ类洞。10个窝洞充填传统汞合金（对照组）。10个窝洞充填含氟汞合金（第二组）。第三组接受8%氟化亚锡治疗，第四组在充填传统汞合金前接受氟化亚锡和窝洞涂漆治疗。在酸凝胶中放置15周以形成类龋损后，将牙齿纵向切开，用偏振光检查。结果表明，含氟汞合金以及用氟化亚锡溶液和漆预处理的传统汞合金在体外对人工洞壁龋的发展均有抑制作用。
