Reliability of Standardized Narrow Strips in the Periotron®

Publisher Website
Google Scholar
Abstract
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 μl 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®.

This publication has 7 references indexed in Scilit: