Asikainen S, Etemadzadeh H, Ainamo J
J Periodontol. 1985 Nov;56(11):686-9. doi: 10.1902/jop.1985.56.11.686.
In clinical practice the authors have found the 2-mm wide Periopaper slightly too large for insertion into the gingival crevice. This study investigated the reliability of Periotron readings for quantitation of gingival fluid when using filter paper strips which are narrower than the Periopaper. The round-ended strips were cut to a standard size 1 mm wide and 15 mm long using a conchotome. A microsyringe was used to deposit 0.1 microliter of four different fluids (distilled water, undiluted horse serum, diluted horse (1:2) and human (1:2) sera) onto Periopaper and the narrow S-690 strips. The moistened end of each strip was placed between the jaws of both the Periotron 600 and the Periotron 6000, and the maximum digital reading was recorded in two series of 20 measurements for each of the four fluids and two strips, giving a total of 640 assessments. A comparison between the two series confirmed the excellent reproducibility of Periotron readings. The comparison between strips revealed from 10% (Periotron 600) to 20% (Periotron 6000) lower readings for the S-690 than for the Periopaper strips for all fluids. The SD of the readings for both the S-690 and the Periopaper strip was low enough to make the difference between strips statistically significant. The slightly lower readings obtained with the narrow S-690 strip were found as reliable as those recorded when using Periopaper.
在临床实践中，作者发现2毫米宽的Periopaper对于插入龈沟来说稍大了些。本研究调查了使用比Periopaper窄的滤纸条时，Periotron读数对龈沟液定量的可靠性。使用鼻甲刀将圆形末端的纸条切成标准尺寸，宽1毫米，长15毫米。用微量注射器将0.1微升四种不同的液体（蒸馏水、未稀释的马血清、稀释的马血清（1:2）和人血清（1:2））滴在Periopaper和窄的S - 690纸条上。将每条纸条湿润的一端放在Periotron 600和Periotron 6000的夹口之间，对四种液体和两种纸条分别进行两组20次测量，记录最大数字读数，共进行640次评估。两组测量结果的比较证实了Periotron读数具有出色的可重复性。纸条之间的比较显示，对于所有液体，S - 690纸条的读数比Periopaper纸条低10%（Periotron 600）至20%（Periotron 6000）。S - 690纸条和Periopaper纸条读数的标准差都足够低，使得纸条之间的差异具有统计学意义。发现窄的S - 690纸条获得的稍低读数与使用Periopaper时记录的读数一样可靠。
