Hartmann E, Klinger G, Neudert E M
Medizinischen Fakultät der Friedrich-Schiller-Universität Jena.
Dtsch Stomatol (1990). 1990 Nov;40(11):468-70.
It was the aim of this clinically longitudinal study to find out the consequence of the removal of calculus with hand- and roto-pro-instruments of the periodontium in 50 patients suffering from periodontal diseases. There are no clinically provable differences between the two methods of the removal of calculus. Both methods cause a statistically significant effect on the inflammatory factors of the periodontium.
这项临床纵向研究的目的是，找出50名牙周病患者使用手动和旋转器械清除牙周结石的后果。两种结石清除方法在临床上并无可证实的差异。两种方法对牙周炎的炎症因子均有统计学意义上的显著影响。
