Tveit A B, Tötdal B
Acta Odontol Scand. 1981;39(2):107-13. doi: 10.3109/00016358109162268.
The aim of this study was to register the fluoride distribution in cavity walls following exposure to a fluoride-containing amalgam in vitro. Class V cavities were prepared on buccal and lingual surfaces in ten extracted premolars and filled with a fluoride-containing (experimental) or a conventional (control) amalgam. After storing the teeth in artificial saliva for three months, the fillings were removed and the cavity walls analyzed with an electron microprobe. The cavity walls which had been exposed to the conventional amalgam did not show F concentrations above the detection limit (0.15%). In the experiment group, however, more than 60% of the analyses of the enamel walls revealed fluoride concentrations greater than 0.15%, the values ranging from 0.2 to 1.7%. In the dentin walls fluoride concentrations of 0.2 - 1.9% were measured. However, 80% of the analyses revealed values between 0.9 and 1.5%. The depth of the zone of increased F concentration in enamel and dentin walls was on the average 27 and 108 micrometer, respectively. Although the concentrations should only be regarded as semiquantitative values, they indicate that considerable amounts of fluoride are deposited in the cavity walls from the fluoride-containing amalgam.
本研究的目的是在体外记录暴露于含氟汞合金后窝洞壁中的氟分布情况。在10颗拔除的前磨牙的颊面和舌面制备V类洞，并分别用含氟（实验组）或传统（对照组）汞合金充填。将牙齿在人工唾液中储存3个月后，去除充填物，并用电子微探针分析窝洞壁。暴露于传统汞合金的窝洞壁未显示出高于检测限（0.15%）的氟浓度。然而，在实验组中，超过60%的釉质壁分析显示氟浓度大于0.15%，其值在0.2%至1.7%之间。在牙本质壁中测得的氟浓度为0.2% - 1.9%。然而，80%的分析显示其值在0.9%至1.5%之间。釉质壁和牙本质壁中氟浓度增加区域的深度平均分别为27和108微米。尽管这些浓度仅应视为半定量值，但它们表明含氟汞合金中有相当数量的氟沉积在窝洞壁中。
