伢典化学机械去龋法的扫描电镜研究

目的：利用扫描电镜技术观察伢典和传统车针去龋后窝洞表面的微观形态。方法：选取累及牙本质深层龋坏的离体牙9颗，分为对照组，机械组，伢典组3组，每组3颗。用扫描电镜观察窝洞表面形态。结果：对照组表面有很多碎屑、残渣等，无牙本质小管完整形态。传统车针组的牙本质表面有不规则的颗粒和碎片，有玷污层形成。牙本质小管口堵塞。伢典组的牙本质表面没有玷污层，牙本质小管口清晰可见。结论：伢典能有效去除玷污层。

The SEM study of Carisolv chemomechnical caries removal

Objective: To analyze the different surface characteristics of the dentine cavity floor created after preparation with Carisolv or conventional drilling. Methods: Nine extracted carious teeth were divided into three different groups. One group was not treated. The other two groups were treated with bur or Carisolv to remove carious dentin respectively. All teeth were analyzed by SEM. Results: The cavity surface of the drilling group appeared rougher with irregular particles scattered throughout the surface area. A well-defined smear layer was detected. The dentine tubule orifices were plugged with material. The cavity surface of the Carisolv group showed that the smear layer was consistently removed and the dentinal tubules of carious dentin were exposed. Conclusion: Carisolv produced a cavity surface with little smear layer.