Periodontal evaluation of abutment teeth. Part 2. Correlation between gingival fluid volumes and pH values in gingival crevices and periodontal pockets

Abstract

Being associated with inflammation, the reaction of gingival fluid has been a constant source of interest and it has been the object of many studies. We have paied attention to its pH and reported the difference between in normal crevices and periodontal pockets. In the present report, the gingival fluid volume was recorded and correlated with the pH in each site.The gingival fluid volumes were measured by a Periotron and each datum was classified according to Garnick (1979). The pH was determined by the same method reported previously.The results were as follows:1. As the gingival fluid volumes increased, elevations of pH from 6.26 to 6.50, 6.54 to 6.71, and 6.30 to 6.49, were observed in the buccal, lingual and interproximal crevices, respectively.2. After 1 week wearing of acrylic resin temporary crowns, elevations of both gingival fluid volumes and pH were observed.3. Regardless of gingival fluid volumes, constant pH levels were observed in buccal and interproximal periodontal pockets.4. In lingual periodontal pockets, decreasing pH values were observed with increasing gingival fluid volumes.