Ashrafi S H, Waterhouse J P, Baratieri A, Picarelli A, Somma F, Patel M
J Oral Pathol. 1983 Jun;12(3):199-206. doi: 10.1111/j.1600-0714.1983.tb00333.x.
Energy dispersive x-ray spectrometry (EDAX system), with scanning electron microscopy was used to detect diffusion of Zn from a source in human dentin and the system was tested for sensitivity and reproducibility. Sections of human teeth in which a ZnO-eugenol cement had been placed in a cavity in the dentin in vivo were prepared and x-ray microanalytical measurements carried out. We found that values of counts for Zn, Ca and P in the same field were linear up to a total counting time of 60 sec. We further found that reproducibility of values between repeat examinations of the same specimens on different days was excellent. The concentration of Zn in the dentin decreased exponentially with distance from source within the distance tested. We conclude that the system can be used to detect trace concentrations of Zn, and that accordingly the diffusion behavior of a variety of ions in dentin could be monitored.
使用配备扫描电子显微镜的能量色散X射线光谱仪（EDAX系统）检测锌从人牙本质中的一个源的扩散情况，并对该系统的灵敏度和重现性进行了测试。制备了在体内将氧化锌丁香酚水门汀置于牙本质腔中的人牙切片，并进行了X射线微分析测量。我们发现，在同一视野中，锌、钙和磷的计数在总计60秒的计数时间内呈线性关系。我们还发现，在不同日期对相同标本进行重复检查时，数值的重现性非常好。在所测试的距离范围内，牙本质中锌的浓度随距源的距离呈指数下降。我们得出结论，该系统可用于检测痕量锌浓度，因此可以监测各种离子在牙本质中的扩散行为。
